text: AMC and GM to Part-MET Issue 1, Amendment 2

text: N o t e t o t h e re a d e r

text: In amended, and in particular in existing (that is, unchanged) text, ‘Agency’ is used interchangeably with ‘EASA’. The interchangeable use of these two terms is more apparent in the consolidated versions. Therefore, please note that both terms refer to the ‘European Union Aviation Safety Agency (EASA)’.

text: Annex IV to ED Decision 2022/004/R Page 1 of 61

text: LOCAL SPECIAL REPORTS

text: METAR INTERVALS — NON-SCHEDULED INTERNATIONAL CAT

text: DISSEMINATION OF METAR

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text: DISSEMINATION OF SPECI

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text: WIND SHEAR FOLLOW-UP

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text: Template for local routine report (MET REPORT) and local special report (SPECIAL)

text: Key: M = inclusion mandatory; C = inclusion conditional, dependent on meteorological conditions; O = inclusion optional.

text: Note 1: The ranges and resolutions for the numerical elements included in local routine reports and local special reports are provided in GM1 MET.TR.200(a). Note 2: The numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the report.

text: Ref.

text: Element Detailed content Template(s)

text: Identification of the Type of report MET REPORT or SPECIAL type of report (M) 2 Location indicator ICAO location indicator (M) nnnn (M) 3 Time of the Day and actual time of the nnnnnnZ observation (M) observation in UTC 4 Identification of an Automated report identifier AUTO automated report (C) (C) 5 Surface wind (M) Name of the element (M) WIND Runway (O) RWY nn[L] or RWY nn[C] or RWY nn[R] Runway section (O) TDZ Wind direction (M) nnn/ VRB BTN nnn/ AND nnn/ C or VRB A L Wind speed (M) [ABV]n[n]KT M Significant speed variations MAX[ABV]nn[n] MNMn[n] (C) Significant directional VRB BTN nnn/ AND nnn/ — variations (C) Runway section (O) MID Wind direction (O) nnn/ VRB BTN nnn/ AND nnn/ C or VRB A L Wind speed (O) [ABV]n[n]KT M Significant speed variations MAX[ABV]nn[n] MNMn[n] (C) Significant directional VRB BTN nnn/ AND nnn/ — variations (C) Runway section (O) END

text: Annex IV to ED Decision 2022/004/R Page 9 of 61

text: Wind direction (O) nnn/ VRB BTN nnn/ AND nnn/ C or VRB A L Wind speed (O) [ABV]n[n]KT M

text: Significant speed variations MAX[ABV]nn[n] MNMn[n] (C) Significant directional VRB BTN nnn/ AND nnn/ — variations (C)

text: Visibility (M) Name of the element (M) VIS C A Runway (O) RWY nn[L] or RWY nn[C] or RWY nn[R] V Runway section (O) TDZ O Visibility (M) n[n][n][n]M or n[n]KM K

text: Runway section (O) MID Visibility (O) n[n][n][n]M or n[n]KM Runway section (O) END Visibility (O) n[n][n][n]M or n[n]KM 7 Runway visual range Name of the element (M) RVR (C) ( ) Runway (C) RWY nn[L] or RWY nn[C] or RWY nn[R] Runway section (C) TDZ Runway visual range (M) [ABV or BLW] nn[n][n]M Runway section (C) MID Runway visual range (C) [ABV or BLW] nn[n][n]M Runway section (C) END Runway visual range (C) [ABV or BLW] nn[n][n]M 8 Present weather (C) Intensity of present FBL or — weather (C) MOD or HVY Characteristics and type of DZ or RA or FG or BR or present weather (C) SN or SG or SA or DU or PL or DS or HZ or FU or SS or FZDZ or VA or SQ or FZUP ( ) or FCor PO or TS or FZRA or SHGR or BCFG or BLDU or SHGS or SHRA or BLSA or BLSN or SHSN or SHUP ( ) or DRDU or DRSA or TSGR or TSGS or DRSN or FZFG or TSRA or TSSN or MIFG or PRFG or 2 2 2 TSUP ( ) or UP ( ) // ( )

text: Cloud (M) Name of the element (M) CLD Runway (O) RWY nn[L] or RWY nn[C] or RWY nn[R] Cloud amount (M) or FEW or OBSC 2 NSC or NCD ( ) vertical visibility (O) SCT or BKN or OVC or /// ( ) Cloud type (C) CB or TCU — or ///( ) Height of cloud base or the n[n][n][n][n VER VIS value of vertical visibility (C) ]FT n[n][n][n]FT

text: or or

text: ///FT ( ) VER VIS ///FT ( )

text: Air temperature (M) Name of the element (M) T Air temperature (M) [MS]nn 11 Dew-point Name of the element (M) DP

text: Annex IV to ED Decision 2022/004/R Page 10 of 61

text: temperature (M) Dew-point temperature (M) [MS]nn 12 Pressure values (M) Name of the element (M) QNH QNH (M) nnnnHPA Name of the element (O) QFE QFE (O) [RWY nn[L] or RWY nn[C] or RWY nn[R]] nnnnHPA

text: [RWY nn[L] or RWY nn[C] or RWY nn[R] nnnnHPA]

text: Supplementary Significant meteorological CB or TS or MOD TURB or SEV TURB or WS or GR or SEV SQL information (C) phenomena (C) or MOD ICE or SEV ICE or FZDZ or FZRA or SEV MTW or SS or DS or BLSN or FC

text: Location of the phenomena IN APCH [n[n][n][n]FT-WIND nnn/n[n]KT] or (C) IN CLIMB-OUT [n[n][n][n]FT-WIND nnn/n[n]KT] or RWY nn[L] or RWY nn[C] or RWY nn[R]

text: Recent weather (C) REFZDZ or REFZRA or REDZ or RE[SH]RA or RERASN or

text: RE[SH]SN or RESG or RESHGR or RESHGS or REBLSN or RESS or REDS or RETSRA or RETSSN or RETSGR or RETSGS or REFC 2 2 2 2 or REPL or REUP ( ) or REFZUP ( ) or RETSUP ( ) or RESHUP ( ) or REVA or RETS

text: Trend forecast (O) Name of the element (M) TREND Change indicator (M) NOSIG BECMG or TEMPO Period of change (C) FMnnnn and/or TLnnnn or ATnnnn Wind (C) nnn/[ABV]n[n]KT [MAX[ABV]nn]] Visibility (C) VIS n[n][n][n]M or C VIS n[n]KM A V Weather phenomenon: FBL or — NSW O intensity (C) MOD or K HVY Weather phenomenon: DZ or FG or characteristics and type (C) RA or BR or SN or SA or SG or DU or PL or HZ or DS or FU or SS or VA or FZDZ or SQ Or FZRA or PO or SHGR or FC or SHGS or TS or SHRA or BCFG or SHSN or BLDU or TSGR or BLSA or TSGS or BLSN or TSRA or DRDU or TSSN DRSA or DRSN or FZFG or MIFG or PRFG Name of the element (C) CLD Cloud amount and vertical FEW or OBSC NSC visibility (C) SCT or BKN or OVC Cloud type (C) CB or — TCU Height of cloud base or the n[n][n][n][n]F VER VIS value of vertical visibility (C) T n[n][n][n]FT

text: Annex IV to ED Decision 2022/004/R Page 11 of 61

text: To be included if the visibility or the runway visual range is < 1 500 m.

text: For automated reports only.

text: Ranges and resolutions for the numerical elements included in local routine reports and local special reports Note: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the template.

text: Ref. Elements included in the local routine report and Range Resolution the local special report

text: Runway: (no units) 01–36 1 2 Wind direction: ° true 010–360 10 3 Wind speed: KT 1–99 1 P99 N/A (100 and greater) 4 Visibility: M 0–750 50 M 800–4 900 100 KM 5–9 1 KM 10 or greater 0 (fixed value: 10 KM) 5 Runway visual range: M 0–375 25 M 400–750 50 M 800–2000 100 6 Vertical visibility: FT 0–250 ( ) 50 FT 300–2 000 100 7 Clouds: height of cloud base: FT 0–250 ( ) 50 FT 300–9 900 100 FT 10 000–20 000 1 000 8 Air temperature; °C – 80 to + 60 1 Dew-point temperature: 9 QNH; QFE: hPa 0500–1 100 1 ( ) Under certain circumstances, as specified in AMC1 MET.TR.205(e)(3); otherwise, a resolution of 100 ft is to be used.

text: Ranges and resolutions for the numerical elements included in local routine report and local special report Element elements included in the local routine Range Resolution report and local special report

text: Runway: (no units) 01–36 1 Wind direction: °true 010–360 10

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text: Wind speed: 1– 99* 1 MPS KT 1– 199* 1 Visibility: 0– 750 50 M 800– 4 900 100 M 5– 9 1 KM 10– 0 (fixed value: 10 KM) KM Runway visual range: M 0– 375 25 400–750 50 M 800–2 000 100 M Vertical visibility: M 0–75** 15 90–600 30 M 0–250** 50 FT 300–2 000 100 FT Clouds: height of cloud base: M 0–75** 15 90–2 970 30 M 0–250** 50 FT 300–9 900 100 FT 10 000-20 000 1 000 FT Air temperature; °C –80 – +60 1 Dew-point temperature: QNH; QFE: 0500–1 100 1 hPa

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text: Local routine report and local special report — Examples of elements

text: Note 1: Consult the ‘local routine report’ and the ‘local special report’ template in AMC1 MET.TR.200(a) to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in local routine reports and local special reports are provided in GM1 MET.TR.200(a). Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the report. They do not correlate with the ‘Ref.’ column in AMC1 MET.TR.200(a). Refer to the ‘Element’ column when cross-referencing. Ref.

text: Element Examples

text: Identification of the type MET REPORT of report SPECIAL 2 Location indicator YUDO 3 Time of the observation 221630Z 4 Identification of an AUTO automated report 5 Surface wind WIND 240/8KT WIND RWY 18 TDZ 190/12KT WIND VRB2KT WIND CALM WIND VRB BTN 350/ AND 050/2KT WIND 270/ABV99KT WIND 120/6KT MAX18 MNM4 WIND 020/10KT VRB BTN 350/ AND 070/ WIND RWY 14R MID 140/12KT WIND RWY 27 TDZ 240/16KT MAX28 MNM10 END 250/14KT 6 Visibility VIS 350M CAVOK VIS 7KM VIS 10KM VIS RWY 09 TDZ 800M END 1200M VIS RWY 18C TDZ 6KM RWY 27 TDZ 4000M 7 Runway visual range RVR RWY 32 400M RVR RWY 20 1600M RVR RWY 10L BLW 50M RVR RWY 14 ABV 2000M RVR RWY 12 TDZ 1100M MID ABV 2000M RVR RWY 16 TDZ 600M MID 500M END 400M RVR RWY 26 500M RWY 20 800M

text: Annex IV to ED Decision 2022/004/R Page 14 of 61

text: Present weather MOD RA HVY TSRA HVY DZ FBL SN HZ FG VA MIFG

text: HVY TSRASN FBL SNRA FBL DZ FG HVY SHSN BLSN HVY TSUP //

text: Cloud CLD NSC CLD SCT 1000FT OVC 2000FT

text: CLD OBSC VER VIS 500FT CLD BKN TCU 900FT CLD RWY 08R BKN 200FT RWY 26 BKN 300FT CLD /// CB ///FT CLD /// CB 1200FT CLD NCD

text: Air temperature T17 TMS08

text: DP15 Dew-point temperature DPMS18

text: Pressure values QNH 0995HPA QNH 1009HPA QNH 1022HPA QFE 1001HPA QNH 0987HPA QFE RWY 18 0956HPA RWY 24 0955HPA

text: Supplementary information FC IN APCH WS IN APCH 180FT-WIND 360/26KT WS RWY 12

text: REFZRA CB IN CLIMB-OUT RETSRA

text: Trend forecast TREND NOSIG TREND BECMG FEW 2000FT

text: TREND TEMPO 250/36KT MAX50

text: TREND BECMG AT1800 VIS 10KM NSW TREND BECMG TL1700 VIS 800M FG TREND BECMG FM1030 TL1130 CAVOK

text: TREND TEMPO TL1200 VIS 600M BECMG AT1230 VIS 8KM NSW CLD NSC TREND TEMPO FM0300 TL0430 MOD FZRA TREND BECMG FM1900 VIS 500M HVY SNRA TREND BECMG FM1100 MOD SN TEMPO FM1130 BLSN

text: TREND BECMG AT1130 CLD OVC 1000FT

text: TREND TEMPO TL1530 HVY SHRA CLD BKN CB 1200FT

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text: (a) Local routine report (same location and weather conditions as METAR): MET REPORT YUDO 221630Z WIND 240/4KT VIS 600M RVR RWY 12 TDZ 1000M MOD DZ FG CLD SCT 1000FT OVC 2000FT T17 DP16 QNH 1018HPA TREND BECMG TL1700 VIS 800M FG BECMG AT1800 VIS 10KM NSW (b) METAR for YUDO (Donlon/International)*: METAR YUDO 221630Z 24004KT 0600 R12/1000U DZ FG SCT010 OVC020 17/16 Q1018 BECMG TL1700 0800 FG BECMG AT 1800 9999 NSW Meaning of both reports: nd Routine report for Donlon/International* issued on the 22nd of the month at 16.30 UTC; surface wind direction 240 degrees; wind speed 4 knots; visibility (along the runway(s) in the local routine report; prevailing visibility in METAR) 600 metres; runway visual range representative of the touchdown zone for runway 12 is 1 000 metres and the runway visual range values have shown an upward tendency during previous 10 minutes (Rrunway visual range tendency to be included in METAR only); and moderate drizzle and fog; scattered cloud at 1 000 feet; overcast at 2 000 feet; air temperature 17 degrees Celsius; dew-point temperature 16 degrees Celsius; QNH 1 018 hectopascals; TREND during next 2 hours; visibility (along the runway(s) in the local routine report; prevailing visibility in METAR) becoming 800 metres in fog by 17.00 UTC; at 18.00 UTC visibility (along the runway(s) in the local routine report; prevailing visibility in METAR) becoming 10 kilometres or more and nil significant weather.

text: * Fictitious location

text: EXAMPLE OF SPECI AND LOCAL SPECIAL REPORT

text: (a) Local special report (same location and weather conditions as SPECI): SPECIAL YUDO 151115Z WIND 050/25KT MAX37 MNM10 VIS 1200M RVR RWY 05 ABV 1800M HVY TSRA CLD BKN CB 500FT T25 DP22 QNH 1008HPA TREND TEMPO TL1200 VIS 600M BECMG AT1200 VIS 8KM NSW NSC (b) SPECI for YUDO (Donlon/International)*: SPECI YUDO 151115Z 05025G37KT 3000 1200NE+TSRA BKN005CB 25/22 Q1008 TEMPO TL1200 0600 BECMG AT1200 8000 NSW NSC Meaning of both reports: Special report for Donlon/International* issued on the 15th of the month at 11.15 UTC; surface wind direction 050 degrees; wind speed 25 knots gusting between 10 and 37 knots (minimum wind speed not to be included in SPECI); visibility 1 200 metres (along the runway(s) in the local special report); prevailing visibility 3 000 metres (in SPECI) with minimum visibility 1 200 metres to north east (directional variations to be included in SPECI only); runway visual range above 1 800 metres at the treshold on runway 05 (runway visual range not required in SPECI with prevailing visibility of 3 000 metres); thunderstorm with heavy rain; broken cumulonimbus cloud at 500 feet; air temperature 25 degrees Celsius; dew-point temperature 22 degrees Celsius; QNH 1 008 hectopascals; trend during next 2 hours, visibility (along the runway(s) in the local special report; prevailing visibility in SPECI) temporarily 600 metres from 11.15 to 12.00, becoming at 12.00 UTC visibility (along the runway(s) in the local special report; prevailing visibility in SPECI) 8 kilometres, thunderstorm ceases and nil significant weather and nil significant cloud.

text: * Fictitious location

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text: RUNWAY VISUAL RANGE (RVR) — THRESHOLD LIMITS

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text: CLOUD — HEIGHT OF CLOUD BASE

text: Operationally desirable accuracy of measurement or Element to be observed observation* Direction: ± 10° Speed: ± 0.5 m/s (1 kt) up to 5 m/s (10 kt) Mean surface wind Speed: ± 1 kt up to 10 kt (± 10 % above 5 m/s (10 kt) ± 10 % above 10 kt

text: ± 1 m/s (2 kt), in terms of longitudinal and lateral components

text: Variations from the mean surface wind ± 2 kt, in terms of longitudinal and lateral components ± 50 m up to 600 m Visibility ± 10 % between 600 m and 1 500 m ± 20 % above 1 500 m ± 10 m up to 400 m Runway visual range ± 25 m between 400 m and 800 m ± 10 % above 800 m Cloud amount ± 1 okta ± 10 m (33 ft) up to 100 m (330 ft) ± 33 ft up to 330 ft Cloud height ± 10 % above 100 m (330 ft) ± 10 % above 330 ft Air temperature and dew-point temperature ± 1°C Pressure value (QNH, QFE) ± 0.5 hPa Air temperature and dew-point temperature ± 1°C Pressure value (QNH, QFE) ± 0.5 hPa

text: * The operationally desirable accuracy is not intended as an operational requirement; it is to be understood as a goal that has been expressed by the operators.

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text: Cancellation of TAF for YUDO (Donlon/International)*: TAF AMD YUDO 161845915Z 1618/1703 CNL= Meaning of the forecast: Amended TAF for Donlon/International* issued on the 16th of the month at 189.4500 UTC cancelling the previously issued TAF valid from 18.0.0 UTC on the 16th of the month to 03.00 UTC on the 17th of the month.

text: * Fictitious location

text: Element to be forecast Operationally desirable Minimum percentage of accuracy of forecasts cases within range TAF

text: Wind direction ± 20° 80 % of cases Wind speed ± 2.5 m/s (5 kt) 80 % of cases Visibility ± 200 m up to 800 m 80 % of cases ± 30 % between 800 m and 10 km Precipitation Occurrence or non-occurrence 80 % of cases Cloud amount One category below 450 m (1 500 ft) 70 % of cases Occurrence or non-occurrence of BKN or OVC between 450 m (1 500 ft) and 3 000 m (10 000 ft) Cloud height ± 30 m (100 ft) up to 300 m (1 000 ft) 70 % of cases ± 30 % above 300 m (1 000 ft) Air temperature ± 1°C 70 % of cases

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text: Annex IV to ED Decision 2022/004/R Page 27 of 61

text: Change or time Time period Meaning indicator

text: FM ndndnhnhnmnm Used to indicate a significant change in most weather ndndnhnhnmnm elements occurring at ndndndnd day, nhnhnhnh hours and nmnmnmnm minutes (UTC); aAll the elements given before ‘FM’ are to be included following ‘FM’ (i.e. they are all superseded by those following the abbreviation).

text: BECMG nd1nd1nh1nh1/nd2nd2nh The change is forecast to commence at nd1nd1nd1nd1 day 2nh2 and nh1nh1nh1nh1 hours (UTC) and be completed by nd1nd1nh1nh1/nd2nd2nh2nh2 nd2nd2nd2nd2 day and nh2nh2nh2nh2 hours (UTC); oOnly those elements for which a change is forecast are to be given following ‘BECMG’; tThe time period nd1nd1nh1nh1/nd2nd2nh2nh2nd1nd1nh1nh1/nd2nd2nh2nh2 should normally be less than 2 hours and in any case should not exceed 4 hours.

text: TEMPO nd1nd1nh1nh1/nd2nd2nh Temporary fluctuations are forecast to commence at 2nh2 nd1nd1nd1nd1 day and nh1nh1nh1nh1 hours (UTC) and cease nd1nd1nh1nh1/nd2nd2nh2nh2 by nd2nd2nd2nd2 day and nh2nh2nh2nh2 hours (UTC); oOnly those elements for which fluctuations are forecast are to be given following ‘TEMPO’; temporary fluctuations should not last more less than one1 hour in each instance, and in the aggregate, cover less than half of the period nd1nd1nh1nh1/nd2nd2nh2nh2nd1nd1nh1nh1/nd2nd2nh2nh2.

text: PROBnn — nd1nd1nh1nh1/nd2nd2nh pProbability of occurrence (in — 2nh2 %) of an alternative value of a nd1nd1nh1nh1/nd2nd2nh2nh2 forecast element or elements; TEMPO nd1nd1nh1nh1/nd2nd2nh nn = 30 or nn = 40 only; pProbability of 2nh2 tTo be placed after the occurrence of temporary nd1nd1nh1nh1/nd2nd2nh2nh2 element(s) concerned. fluctuations.

text: Change Time indicator and Meaning indicator period

text: NOSIG — no significant changes are forecast BECMG FMn1n1n1n1 the change is commence at n1n1n1n1n1n1n1n1 UTC and be TLn2n2n2n2 forecast to: completed by n2n2n2n2n2n2n2n2 UTC FMn1n1n1n1 TLn2n2n2n2 TLnnnn commence at the beginning of the trend forecast period and be completed by nnnn UTC FMnnnn commence at nnnn UTC and be completed by the end of the trend forecast period ATnnnn occur at nnnn UTC (specified time)

text: Annex IV to ED Decision 2022/004/R Page 28 of 61

text: — commence at the beginning of the trend forecast period and be completed by the end of the trend forecast period; or the time is uncertain TEMPO FMn1n1n1n1 temporary commence at n1n1n1n1n1n1n1n1 UTC and cease by TLn2n2n2n2 fluctuations n2n2n2n2n2n2n2n2 UTC FMn1n1n1n1 TLn2n2n2n2 are forecast to TLnnnn commence at the beginning of the trend forecast period and cease by nnnn UTC FMnnnn commence at nnnn UTC and cease by the end of the trend forecast period — commence at the beginning of the trend forecast period and cease by the end of the trend forecast period

text: Annex IV to ED Decision 2022/004/R Page 29 of 61

text: Template for aerodrome warnings

text: M = inclusion mandatory;

text: C = inclusion conditional, included whenever applicable.

text: Note 1: The ranges and resolutions for the numerical elements included in aerodrome warnings are provided in GM1 MET.TR.235.

text: Note 2: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the aerodrome warning.

text: Ref. Element Detailed content Templates

text: Location indicator of the Location indicator of the nnnn aerodrome (M) aerodrome 2 Identification of the type of Type of message and sequence AD WRNG [n]n message (M) number 3 Validity period (M) Day and time of validity period in VALID nnnnnn/nnnnnn UTC 4 IF THE AERODROME WARNING IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE. 5 Phenomenon (M) Description of the phenomenon TC nnnnnnnnnn or causing the issuance of the [HVY] TS or aerodrome warning GR or [HVY] SN [nnCM] or [HVY] FZRA or [HVY] FZDZ or RIME or [HVY] SS or [HVY] DS or SA or DU or SFC WSPD nn[n]KT MAX nn[n]

text: SFC WIND nnn/nn[n]KT MAX nn[n] or SQ or FROST or TSUNAMI or VA[DEPO] or TOX CHEM or

text: Free text up to 32 characters

text: Observed or forecast Indication whether the OBS [AT nnnnZ] or phenomenon (M) information is observed and FCST expected to continue, or forecast 7 Changes in intensity (C) Expected changes in intensity INTSF or WKN or NC

text: Cancellation of the aerodrome Cancellation of the aerodrome CNL AD WRNG [n]n warning warning referring to its nnnnnn/nnnnnn identification

text: Element Detailed content Templates Examples

text: Location indicator of Location indicator of the nnnn YUCC the aerodrome (M) aerodrome

text: Annex IV to ED Decision 2022/004/R Page 30 of 61

text: Identification of the Type of message and AD WRNG [n]n AD WRNG 2 type of message (M) sequence number Validity period (M) Day and time of validity VALID nnnnnn/nnnnnn VALID period in UTC 211230/211530 IF THE AERODROME WARNING IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE. Phenomenon (M) Description of TC nnnnnnnnnn or TC ANDREW phenomenon causing [HVY] TS or HVY SN 25CM the issuance of the GR or SFC WSPD 20MPS aerodrome warning [HVY] SN [nnCM] or MAX 30 [HVY] FZRA or VA [HVY] FZDZ or RIME or [HVY] SS or TSUNAMI [HVY] DS or SA or DU or SFC WSPD nn[n]MPS MAX nn[n] (SFC WSPD nn[n]KT MAX nn[n]) or SFC WIND nnn/nn[n]MPS MAX nn[n] (SFC WIND nnn/nn[n]KT MAX nn[n]) or SQ or FROST or TSUNAMI or VA[DEPO] or TOX CHEM or Free text up to 32 characters Observed or forecast Indication whether the OBS [AT nnnnZ] or OBS AT 1200Z phenomenon (M) information is observed FCST OBS and expected to continue, or forecast Changes in intensity Expected changes in INTSF or WKN (C) intensity WKN or NC

text: Cancellation of Cancellation of CNL AD WRNG [n]n CNL AD WRNG 2 aerodrome aerodrome warning nnnnnn/nnnnnn 211230/211530 warning referring to its identification

text: Annex IV to ED Decision 2022/004/R Page 31 of 61

text: Ranges and resolutions for the numerical elements included in volcanic ash and tropical cyclone advisories, SIGMET, AIRMET, aerodrome and wind shear warnings

text: Note: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the template.

text: Ref. Elements Range Resolution

text: Summit elevation: FT 000–27 000 1 M 000–8 100 1 2 Advisory number: for VA (index)* 000–2 000 1 for TC (index)* 00–99 1 3 Maximum surface wind: KT 00–199 1 4 Central pressure: hPa 850–1 050 1 5 Surface wind speed: KT 30–99 1 6 Surface visibility: M 0000–0750 50 M 0800–5 000 100 7 Cloud: height of base: FT 000–1 000 100 8 Cloud: height of top: FT 000–9 900 100 FT 10 000–60 000 1 000 9 Latitudes: ° 00–90 1 (degrees) (minutes) 00–60 1 10 Longitudes: ° 000–180 1 (degrees) (minutes) 00–60 1 11 Flight levels: 000–650 10 12 Movement: KT 0–150 5 KMH 0–300 10 * Non-dimensional

text: Ranges and resolutions for the numerical elements included in volcanic ash and tropical cyclone advisory, SIGMET, AIRMET aerodrome warning and wind shear warning

text: Elements Range Resolution

text: Summit elevation: M 000–8 100 1 FT 000–27 000 1 Advisory number: for VA 000–2 000 1 (index)* for TC 00–99 1 (index)* Maximum surface wind: MPS 00–99 1 KT 00–199 1 Central pressure: hPa 850–1 050 1 Surface wind speed: MPS 15–49 1 KT 30–99 1 Surface visibility: M 0000–0750 50 M 0800–5 000 100 Cloud: height of base: M 000–300 30

text: Annex IV to ED Decision 2022/004/R Page 32 of 61

text: Elements Range Resolution

text: FT 000–1 000 100 Cloud: height of top: M 000–2 970 30 M 3 000–20 000 300 FT 000–9 900 100 FT 10 000–60 000 1 000 Latitudes: ° 00–90 1 (degrees) 00–60 1 (minutes) Longitudes: ° 000–180 1 (degrees) 00–60 1 (minutes) Flight levels: 000–650 10 Movement: KMH 0–300 10 KT 0–150 5 * Non-dimensional

text: Annex IV to ED Decision 2022/004/R Page 33 of 61

text: Aerodrome warning — examples of elements

text: Note 1: Consult the ‘aerodrome warning’ template in AMC1 MET.TR.235 to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in aerodrome warnings are provided in GM1 MET.TR.235. Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the aerodrome warning. They do not correlate with the ‘Ref.’ column in AMC1 MET.TR.235. Refer to the ‘Element’ column when cross-referencing.

text: Ref. Element Examples

text: Location indicator of the aerodrome YUCC 2 Identification of the type of message AD WRNG 2 3 Validity period VALID 211230/211530 4 IF THE AERODROME WARNING IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE. 5 Phenomenon TC ANDREW HVY SN 25CM SFC WSPD 40KT MAX 60 SFC WIND 230/40KT VA TSUNAMI 6 Observed or forecast phenomenon OBS AT 1200Z OBS 7 Changes in intensity WKN

text: Cancellation of the aerodrome CNL AD WRNG 2 211230/211530 warning

text: Annex IV to ED Decision 2022/004/R Page 34 of 61

text: Annex IV to ED Decision 2022/004/R Page 35 of 61

text: Annex IV to ED Decision 2022/004/R Page 36 of 61

text: Annex IV to ED Decision 2022/004/R Page 37 of 61

text: Annex IV to ED Decision 2022/004/R Page 38 of 61

text: YUCC SIGMET RO2 VALID 201200/201600 YUDO — YUCC AMSWELL FIR RDOACT CLD OBS AT 1155Z WI 30KM OF N6030 E02550 SFC/FL550 STNRS5000 W14000 — S5000 W13800 — S5200 W13800 — S5200 W14000 — S5000 W14000 SFC/FL100 WKN FCST AT 1600Z WI S5200 W14000 — S5200 W13800 — S5300 W14000 — S5200 W14000 Meaning: The second radioactive cloud SIGMET issued for the AMSWELL* flight information region (identified by YUCC Amswell area control centre) by the Donlon/International* meteorological watch office (YUDO) since 00.01 UTC; th the SIGMET is valid from 12.00 UTC to 16.00 UTC on the 20 of the month; radioactive cloud was observed at 11.55 UTC within 30 kilometres of 60 degrees 30 minutes north 25 degrees 50 minutes east between the surface and flight level 550. The radioactive cloud is stationary.an area bounded by 50 degrees 0 minutes south and 140 degrees 0 minutes west to 50 degrees 0 minutes south and 138 degrees 0 minutes west to 52 degrees 0 minutes south and 138 degrees 0 minutes west to 52 degrees 0 minutes south and 140 degrees 0 minutes west to 50 degrees 0 minutes south and 140 degrees 0 minutes west and between the surface and flight level 100; the radioactive cloud is expected to weaken in intensity.

text: * Fictitious locations

text: Letter to be used in the sequence number for SIGMET Type Specified en-route phenomena specified en-route phenomena

text: WC Tropical cyclone C For WC exchange test purposes X WV Volcanic ash A For WV exchange test purposes Y WS Thunderstorm T Turbulence U Icing I Freezing rain F Mountain wave M

text: Annex IV to ED Decision 2022/004/R Page 39 of 61

text: Dust storm D Sandstorm S Radioactive cloud R For WS exchange test purposes Z

text: Annex IV to ED Decision 2022/004/R Page 40 of 61

text: Annex IV to ED Decision 2022/004/R Page 41 of 61

text: Annex IV to ED Decision 2022/004/R Page 42 of 61

text: Annex IV to ED Decision 2022/004/R Page 43 of 61

text: VA ADVISORY DTG: 20160614/0925Z VAAC: LONDON VOLCANO: HEKLA 372070 PSN: N6359 W01942 AREA: ICELAND SUMMIT ELEV: 1491M ADVISORY NR: 2016/002 INFO SOURCE: ICELAND MET OFFICE AVIATION COLOUR CODE: RED ERUPTION DETAILS: ERUPTION STARTED AT 0600Z ONGOING, PLUME TO 14KM OBS VA DTG: 14/0900Z OBS VA CLD: SFC/FL200 N6421 W02030 - N6421 W01900 - N6315 W01856 -– N6303 W02025 - N6421 W02030 FL200/350 N6423 7W02021 - N6423

text: Annex IV to ED Decision 2022/004/R Page 44 of 61

text: W01854 - N6309 W01856 - N6309 W02022 - N6423 W02021 FL350/550 N6422 W02023 - N6422 W01856 - N6304 W01854 - N6306 W02023 - N6422 W02023 FCST VA CLD +6HR: 14/1500Z SFC/FL200 N6423 W01822 - N6138 W01826 - N6135 W02205 - N6423 W02213 - N6423 W01822 FL200/350 N6425 W01814 - N6051 W01825 - N6050 W02348 - N6424 W02055 - N6425 W01814 FL350/550 N6419 W01737 - N6109 W01753 - N6116 W02234 - N6423 W02108 - N6419 W01737 FCST VA CLD +12HR: 14/2100Z SFC/FL200 N6449 W02121 - N6441 W01717 - N5921 W01659 - N5922 W02419 - N6449 W02121 FL200/350 N6441 W02002 - N6227 W01556 - N5831 W01927 - N5833 W02629 - N6441 W02002 FL350/550 N6448 W01941 - N6117 W01507 - N5846 W02024 - N5910 W02520 - N6448 W01941 FCST VA CLD +18HR: 15/0300Z SFC/FL200 N6554 W02018 - N6053 W01348 - N5542 W02046 - N5606 W02724 - N6554 W02018 FL200/350 N6446 W01949 - N6039 W01415 - N5535 W02019 - N5538 W02851 - N6446 W01949 FL350/550 N6500 W01928 - N5918 W01407 - N5516 W02235 - N5927 W02532 - N6500 W01928 RMK: T+0 CONFIDENCE HIGH, PLUME HEIGHT OBTAINED BY MOBILE RADAR NXT ADVISORY: WILL BE ISSUED BY 20160614/1200Z

text: VA ADVISORY DTG: 20171010/1200Z VAAC: TOULOUSE VOLCANO: CAMPI FLEGREI 211010 PSN: N4049 E01408 AREA: ITALY SUMMIT ELEV: 458M ADVISORY NR: 2017/03 INFO SOURCE: INGV AVIATION COLOUR CODE: RED ERUPTION DETAILS: THE VOLCANO ACTIVITY CONTINUES OBS VA DTG: 10/0600Z OBS VA CLD: SFC/FL100 N4135 E01325 - N4155 E01410 - N4155 E01610 - N4000 E01655 - N4005 E01335 - N4135 E01325 FL100/390 N4130 E01335 - N4150 E01410 - N4115 E01645 - N3940 E01925 - N3715 E01800 - N3745 E01630 - N3910 E01500 - N4000 E01335 - N4130 E01335 MOV SE 20KT FCST VA CLD +6HR: 10/1800Z SFC/FL100 N4150 E01255 - N4220 E01535 - N4115 E01845 - N3940 E01955 - N3820 E01915 - N4000 E01235 - N4150 E01255 FL100/390 N4135 E01310 - N4120 E02050 - N3750 E02335 - N3520 E02215 - N3525 E01935 - N3840 E01640 - N3945 E01255 - N4135 E01310 FCST VA CLD +12HR: 11/0000Z SFC/FL100 N4150 E01210 - N4215 E01530 - N4130 E01935 - N3925 E02200 - N3700 E02125 - N3830 E01650 - N3920 E01220 - N4150 E01210 FL100/390 N4130 E01310 - N4140 E02020 - N4030 E02400 - N3645 E02555 - N3455 E02350 - N3810 E01820 - N3935 E01255 -

text: Annex IV to ED Decision 2022/004/R Page 45 of 61

text: N4130 E01310 FCST VA CLD +18HR: 11/0600Z SFC/FL100 N4125 E01255 - N4120 E01820 - N4000 E02405 - N3530 E02430 - N3540 E02220 - N3725 E01845 - N3840 E01320 - N4115 E01255 - N4125 E01255 FL100/390 N4135 E01300 - N4145 E02010 - N4115 E02650 - N3900 E03105 - N3250 E02805 - N3720 E01830 - N3845 E01340 - N4135 E01300 RMK: VA CLD EVIDENT ON SATELLITE IMAGERY NXT ADVISORY: NO FURTHER ADVISORY

text: Annex IV to ED Decision 2022/004/R Page 46 of 61

text: TC ADVISORY DTG: 20170214/0600z TCAC: REUNION TC: DINEO ADVISORY NR: 2004/4 OBS PSN: 14/0600Z S2220 E03849 CB: WI 300NM OF TC CENTRE TOP FL500 MOV: SW 05KT INTST CHANGE: INTSF

text: Annex IV to ED Decision 2022/004/R Page 47 of 61

text: C: 985HPA MAX WIND: 50KT FCST PSN +06HR: 14/1200Z S2236 E03831 FCST MAX WIND +06HR: 55KT FCST PSN +12HR: 14/1800Z S2251 E03812 FCST MAX WIND +12HR: 60KT FCST PSN +18HR: 15/0000Z S2304 E03748 FCST MAX WIND +18HR: 70KT FCST PSN +24HR: 15/0600Z S2316 E03712 FCST MAX WIND +24HR: 80KT RMK: NIL NXT MSG: 20170214/1200Z

text: Annex IV to ED Decision 2022/004/R Page 48 of 61

text: Annex IV to ED Decision 2022/004/R Page 49 of 61

text: METAR and SPECI — examples of elements

text: Note 1: Consult the ‘Template for METAR and SPECI’ (Appendix 1 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: ) to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in the METAR and SPECI are provided in Appendix 1 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: . Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the METAR and SPECI. They do not correlate with the ‘Ref.’ column in the ‘Template for METAR and SPECI’ in Appendix 1 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: . Refer to the ‘Element’ column when cross-referencing.

text: Ref. Element Examples

text: Identification of the type of METAR report METAR COR SPECI 2 ICAO location indicator YUDO 3 Time of the observation 221630Z 4 Identification of an automated AUTO report or a missing report NIL 5 Surface wind 24008KT VRB02KT 19012KT 00000KT 140P99KT 12006G18KT 24016G28KT 02010KT 350V070 ///10KT 240//KT /////KT

text: Annex IV to ED Decision 2022/004/R Page 50 of 61

text: Visibility 0350 7000 9999 0800 //// 2000 1200NW 6000 2800E 6000 2800 CAVOK ( ) 7 Runway visual range R32/0400 R12R/1700 R16L/0650 R16C/0500 R16R/0450 R17L/0450 R14L/P2000 R10/M0050 R16L///// R10///// R08L///// R08R/0400 R12/1100U R26/0550N R20/0800D R12/0700 8 Present weather RA HZ VCFG +TSRA FG VCSH +DZ VA VCTS –SN MIFG VCBLSA +TSRASN –SNRA DZ FG +SHSN BLSN UP FZUP //

text: Annex IV to ED Decision 2022/004/R Page 51 of 61

text: Cloud FEW015 SCT010 OVC020 BKN016TCU SCT008 BKN025CB BKN025/// //////CB NSC NCD VV005 VV/// BKN/// ///015 ///////// ////// BKN///TCU 10 Air temperature and 17/10 dew-point temperature 02/M08 M01/M10 ///10 17/// ///// 11 Pressure values Q0995 Q1022 Q//// 12 Supplementary information REFZRA RETSRA

text: WS R03 WS ALL RWY WS R18C

text: W15/S2 W12/H75 W///S3 WM01/S/ W///H104 W17/H/// W///H/// W///S/

text: Annex IV to ED Decision 2022/004/R Page 52 of 61

text: Trend forecast NOSIG BECMG FEW020 TEMPO 25036G50KT BECMG FM1030 TL1130 CAVOK BECMG TL1700 0800 FG BECMG AT1800 9000 NSW BECMG FM1900 0500 +SNRA BECMG FM1100 SN TEMPO FM1130 BLSN TEMPO FM0330 TL0430 FZRA TEMPO TL1200 0600 BECMG AT1200 8000 NSW NSC BECMG AT1130 OVC010 TEMPO TL1530 +SHRA BKN012CB

text: ( ) Replacing visibility, runway visual range, present weather, and cloud elements, when applicable.

text: TAF — examples of elements

text: Note 1: Consult the ‘Template for TAF’ (Appendix 3 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: ) to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in TAF are provided in Appendix 3 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: . Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the TAF. They do not correlate with the ‘Ref.’ column in the ‘Template for TAF’ of Appendix 3 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: Ref. Element Examples

text: Identification of the type of TAF forecast TAF AMD TAF COR 2 ICAO location indicator YUDO 3 Time of issue of the forecast 160000Z 4 Identification of a missing forecast NIL 5 Days and period of validity of the 0812/0918 forecast 6 Identification of a cancelled CNL forecast 7 Surface wind 24008KT VRB02KT 19010KT 00000KT 140P99KT 24016G28KT 8 Visibility 0350 7000 9999 CAVOK ( )

text: Annex IV to ED Decision 2022/004/R Page 53 of 61

text: Forecast weather RA HZ +TSRA FG –FZDZ PRFG +TSRASN SNRA BR 10 Cloud FEW010 OVC020 NSC SCT005 BKN012 SCT008 BKN025CB VV005 VV/// 11 Temperature TX25/1013Z TN09/1005Z TX05/2112Z TNM02/2103Z TX22/1115Z TN10/1204Z TX26/1215Z TX26/1215Z TN11/1306Z Tx25/1315Z 12 Expected significant changes to TEMPO 0815/0818 25034G50KT one or more of the above TEMPO 2212/2214 17012G26KT 1000 TSRA SCT010CB BKN020 elements during the period of validity of the forecast BECMG 3010/3011 00000KT 2400 OVC010 PROB30 1412/1414 0800 FG BECMG 1412/1414 RA TEMPO 2503/2504 FZRA TEMPO 0612/0615 BLSN PROB40 TEMPO 2923/3001 0500 FG FM051230 15008KT 9999 BKN020 BECMG 1618/1620 8000 NSW NSC BECMG 2306/2308 SCT015CB BKN020

text: ( ) Replacing visibility, runway visual range, forecast weather and cloud elements, when applicable.

text: Annex IV to ED Decision 2022/004/R Page 54 of 61

text: Wind shear warnings — examples of elements

text: Note 1: Consult the ‘Template for wind shear warnings’ (Appendix 4 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: ) to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in wind shear warnings are provided in Appendix 8 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: . Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the wind shear warning. They do not correlate with the ‘Ref.’ column in the ‘Template for wind shear warnings’ of Appendix 4 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: Ref. Element Example

text: Location indicator of the aerodrome YUCC 2 Identification of the type of message WS WRNG 1 3 Time of origin and validity period 211230 VALID TL 211330 221200 VALID 221215/221315 4 Phenomenon WS APCH RWY12 MOD WS RWY34 WS IN CLIMB-OUT MBST APCH RWY26 MBST IN CLIMB-OUT 5 Observed, reported or forecast REP AT 1510 B747 phenomenon OBS AT 1205 FCST 6 Details of the phenomenon SFC WIND: 320/10KT 200FT-WIND: 360/26KT 30KT LOSS 2NM FNA RWY13

text: Cancellation of the wind shear warning CNL WS WRNG 1 211230/211330

text: Annex IV to ED Decision 2022/004/R Page 55 of 61

text: SIGMET and AIRMET — examples of elements

text: Note 1: Consult the ‘Template for SIGMET and AIRMET’ (Appendix 5 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: ) to identify the mandatory (M), the conditional (C) or the optional (O) elements.

text: Note 2: The ranges and resolutions for the numerical elements included in SIGMET and AIRMET are provided in Appendix 8 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the SIGMET and AIRMET. They do not correlate with the ‘Ref.’ column in the ‘Template for SIGMET and AIRMET’ of Appendix 5 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: Ref.

text: Element SIGMET examples AIRMET examples

text: ICAO location YUCC indicator of YUDD FIR/CTA 2 Identification SIGMET U05 AIRMET 2 SIGMET I12 AIRMET 19 AIRMET B19 3 Validity period VALID 010000/010400 VALID 221215/221600 VALID 101520/101800 VALID 251600/252200 VALID 152000/160000 VALID 192300/200300 4 ICAO location YUDO– indicator of YUSO– MWO 5 Name of the YUCC AMSWELL FIR YUCC AMSWELL FIR/2 FIR/CTA YUDD SHANLON YUDD SHANLON FIR FIR/UIR UIR FIR/UIR YUDD SHANLON CTA 6 IF THE SIGMET IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TABLE. 7 Status TEST TEST indicator EXER EXER 8 Phenomenon OBSC TS SFC WIND 310/40KT OBSC TSGR EMBD TS SFC VIS 1500M (BR) EMBD TSGR FRQ TS FRQ TSGR ISOL TS SQL TS ISOL TSGR SQL TSGR OCNL TS TC GLORIA PSN N10 W060 CB OCNL TSGR TC NN PSN S2030 E06030 CB MT OBSC SEV TURB SEV ICE BKN CLD 400/3000FT SEV ICE (FZRA) SEV MTW BKN CLD 1000/5000FT BKN CLD SFC/ABV10000FT HVY DS HVY SS

text: Annex IV to ED Decision 2022/004/R Page 56 of 61

text: OVC CLD 900/ABV10000FT VA ERUPTION MT OVC CLD 1000/5000FT ASHVAL PSN S15 E073 OVC CLD SFC/ABV10000FT VA CLD

text: RDOACT CLD ISOL CB OCNL CB FRQ CB

text: ISOL TCU OCNL TCU FRQ TCU

text: MOD TURB MOD ICE MOD MTW 9 Observed or OBS forecast OBS AT 1210Z phenomenon FCST FCST AT 1815Z 10 Location N2020 W07005 N48 E010 S60 W160 S0530 E16530

text: N OF N50 S OF N5430 N OF S10 S OF S4530 W OF W155 E OF W45 W OF E15540 E OF E09015

text: N OF N1515 AND W OF E13530 S OF N45 AND N OF N40

text: N OF LINE S2520 W11510 – S2520 W12010 SW OF LINE N50 W005 – N60 W020 SW OF LINE N50 W020 – N45 E010 AND NE OF LINE N45 W020 – N40 E010

text: WI N6030 E02550 – N6055 E02500 – N6050 E02630 – N6030 E02550

text: ENTIRE FIR ENTIRE UIR ENTIRE FIR/UIR

text: ENTIRE CTA

text: WI 400KM OF TC CENTRE WI 250NM OF TC CENTRE

text: WI 30KM OF N6030 E02550 11 Level SFC/FL070 FL180 FL050/080 TOP FL390 ABV FL250 TOP ABV FL100

text: Annex IV to ED Decision 2022/004/R Page 57 of 61

text: TOP FL500 TOP ABV FL500 TOP BLW FL450 SFC/10000FT 8000FT 6000/12000FT ABV 7000FT TOP ABV 9000FT TOP ABV 10000FT 10000FT/FL250 3000M SFC/3000M 2000/3000M 2000M/FL150 12 Movement or MOV SE expected MOV NNW movement MOV E 20KT MOV WSW 20KT (MOV E 40KMH) STNR 13 Changes in INTSF intensity WKN NC 14 Forecast time FCST AT 2200Z —

text: TC forecast TC CENTRE PSN N1030 E16015 — position TC CENTRE PSN N1015 E15030 CB 16 Forecast N30 W170 — position N OF N30

text: S OF S50 AND W OF E170

text: S OF N46 AND N OF N39

text: NE OF LINE N35 W020 – N45 W040 SW OF LINE N48 W020 – N43 E010 AND NE OF LINE N43 W020 – N38 E010

text: WI N20 W090 – N05 W090 – N10 W100 – N20 W100 – N20 W090

text: ENTIRE FIR ENTIRE UIR ENTIRE FIR/UIR

text: ENTIRE CTA

text: NO VA EXP

text: WI 30KM OF N6030 E02550

text: WI 150NM OF TC CENTRE 17 Repetition of AND — elements

text: Cancellation of CNL SIGMET B04 101200/101600 CNL AIRMET 5 151520/151800 SIGMET/ AIRMET CNL SIGMET A07 251030/251430 VA MOV TO

text: Annex IV to ED Decision 2022/004/R Page 58 of 61

text: YUDO FIR

text: Examples of elements

text: Note 1: Consult the ‘Template for advisory for volcanic ash’ (Appendix 6 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: ) to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in advisory for volcanic ash are provided in Appendix 8 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: . Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the advisory for volcanic ash. They do not correlate with the ‘Ref.’ column in the ‘Template for advisory for volcanic ash’ of Appendix 6 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: Ref. Element Examples

text: Identification of VA ADVISORY the type of message 2 Status indicator STATUS: TEST EXER 3 Time of origin DTG: 20080923/0130Z 4 Name of VAAC VAAC: TOKYO 5 Name of volcano VOLCANO: KARYMSKY 300130 UNNAMED UNKNOWN 6 Location of PSN: N5403 E15927 volcano UNKNOWN 7 State or region AREA: RUSSIA UNKNOWN 8 Summit elevation SUMMIT ELEV: 1536M SFC 9 Advisory number ADVISORY NR: 2008/4 10 Information source INFO SOURCE: HIMAWARI-8 KVERT KEMSD 11 Colour code AVIATION COLOUR CODE: RED 12 Eruption details ERUPTION DETAILS: ERUPTION AT 20080923/0000Z FL300 REPORTED

text: NO ERUPTION – RE-SUSPENDED VA ( )

text: UNKNOWN 13 Time of OBS VA DTG: 23/0100Z observation (or estimation) of volcanic ash clouds

text: Annex IV to ED Decision 2022/004/R Page 59 of 61

text: Observed or OBS VA CLD: FL250/300 N5400 E15930 – N5400 E16100 – estimated volcanic N5300 E15945 – N5400 E15930 MOV SE 20KT ash clouds SFC/FL200

text: N5130 E16130 – N5130 E16230 – N5230 E16230 – N5230 E16130 MOV SE 15KT

text: TOP FL240 MOV W 40KMH

text: VA NOT IDENTIFIABLE FM SATELLITE DATA

text: WIND FL050/070 180/24KT 15 Forecast height FCST VA CLD +6 HR: 23/0700Z and position of the volcanic ash clouds FL250/350 N5130 E16030 – N5130 E16230 – (+6 HR) N5330 E16230 – N5330 E16030 SFC/FL180 N4830 E16330 – N4830 E16630 – N5130 E16630 – N5130 E16330 NO VA EXP NOT AVBL NOT PROVIDED 16 Forecast height FCST VA CLD +12 HR: 23/1300Z and position of the volcanic ash clouds SFC/FL270 N4830 E16130 – N4830 E16600 – (+12 HR) N5300 E16600 – N5300 E16130 – N4830 E16130 NO VA EXP NOT AVBL NOT PROVIDED 17 Forecast height FCST VA CLD +18 HR: 23/1900Z and position of the volcanic ash clouds NO VA EXP (+18 HR) NOT AVBL NOT PROVIDED 18 Remarks RMK: LATEST REP FM KVERT (0120Z) INDICATES ERUPTION HAS CEASED. TWO DISPERSING VA CLD ARE EVIDENT ON SATELLITE IMAGERY RE-SUSPENDED VA ( )

text: NIL 19 Next advisory NXT ADVISORY: 20080923/0730Z NO LATER THAN nnnnnnnn/nnnnZ NO FURTHER ADVISORIES WILL BE ISSUED BY nnnnnnnn/nnnnZ ( ) To be included (as free text) only for those situations where volcanic ash has been re-suspended. ( ) To be included (as free text) where space in the Remarks section allows.

text: Annex IV to ED Decision 2022/004/R Page 60 of 61

text: Tropical cyclone advisory — examples of elements

text: Note 1: Consult the ‘Template for advisory for tropical cyclones’ (Appendix 7 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: ) to identify the mandatory (M), the conditional (C) or the optional (O) elements. Note 2: The ranges and resolutions for the numerical elements included in tropical cyclone advisory are provided in Appendix 8 to Annex V (Part-MET) to

text: Regulation (EU) No 2017/373

text: . Note 3: The row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the advisory for tropical cyclones. They do not correlate with the ‘Ref.’ column in the ‘Template for advisory for tropical cyclones’ of Appendix 7 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: . Refer to the ‘Element’ column when crossreferencing.

text: Ref. Element Examples

text: Identification of the type of message TC ADVISORY 2 Status indicator STATUS: TEST EXER 3 Time of origin DTG: 20040925/1900Z 4 Name of TCAC TCAC: YUFO MIAMI 5 Name of tropical cyclone TC: GLORIA 6 Advisory number ADVISORY NR: 2004/13 7 Observed position of the centre OBS PSN: 25/1800Z N2706 W07306 8 Observed CB cloud CB: WI 250NM OF TC CENTRE TOP FL500 NIL 9 Direction and speed of movement MOV: NW 20KMH 10 Changes in intensity INTST CHANGE: INTSF 11 Central pressure C: 965HPA 12 Maximum surface wind MAX WIND: 43KT 13 Forecast of centre position (+6 HR) FCST PSN +6 HR: 25/2200Z N2748 W07350 14 Forecast of maximum surface wind FCST MAX WIND +6 HR: 43KT (+6 HR) 15 Forecast of centre position (+12 HR) FCST PSN +12 HR: 26/0400Z N2830 W07430 16 Forecast of maximum surface wind FCST MAX WIND +12 HR: 43KT (+12 HR) 17 Forecast of centre position (+18 HR) FCST PSN +18 HR: 26/1000Z N2852 W07500 18 Forecast of maximum surface wind FCST MAX WIND +18 HR: 41KT (+18 HR) 19 Forecast of centre position (+24 HR) FCST PSN +24 HR: 26/1600Z N2912 W07530 20 Forecast of maximum surface wind FCST MAX WIND +24 HR: 39KT (+24 HR) 21 Remarks RMK: NIL 22 Expected time of issuance of next NXT MSG: 20040925/2000Z advisory

text: Annex IV to ED Decision 2022/004/R Page 61 of 61

identifier: AMC & GM to Part-MET — Issue 1, Amendment 2

beslut: ED Decision 2022/004/R

publisher: Europeiska unionens byrå för luftfartssäkerhet

sprak: en

title: AMC & GM to Part-MET — Issue 1, Amendment 2

serie: amc-gm

text: Annex IV to ED Decision 2022/004/R ‘AMC and GM to Part-MET — Issue 1, Amendment 2’

type: rubrik

text: The text of the amendment is arranged to show deleted, new or amended text as shown below: — deleted text is struck through; — new or amended text is highlighted in blue; — an ellipsis ‘[…]’ indicates that the rest of the text is unchanged.

type: stycke

text: Annex V to ED Decision 2017/001/R is amended as follows:

text: GM1 MET.OR.100 Meteorological data and information

text: GENERAL — TERMS IN PART-MET

text: Whereas ‘provide’ is used solely in connection with the provision of MET service, ‘issue’ is used solely in connection with cases where the obligation specifically extends to sending out (disseminate) the information to a user. Furthermore, ‘supply’ is used solely in connection with cases where either ‘issue’ or ‘disseminate’ applies.

text: GM12 MET.OR.100 Meteorological data and information GM1 MET.OR.110 Meteorological information exchange requirements

text: GENERAL

text: Operational meteorological information is disseminated to international OPMET databanks and tothe centres responsible for the operation of the aeronautical fixed service iInternet-based services. as specified in GM1 MET.0R.110.

text: AMC1 MET.OR.200(a)(1) Meteorological reports and other information

text: ROUTINE OBSERVATIONS

text: Aeronautical Mmeteorological stations should make routine observations throughout the 24 hours of each day or as determined by the competent authority.

text: GM1 MET.OR.200(a)(2)Meteorological reports and other information

text: Local special reports should be transmitted to local air traffic services units as soon as the specified conditions occur. By agreement between the aeronautical meteorological station and the appropriate ATS unit, local special reports are not required to be disseminated in respect of: […]

text: GM1 MET.OR.200(a)(3) Meteorological reports and other information

text: (a) For aerodromes not serving scheduled international commercial air transport operations, an aeronautical meteorological station may disseminate hourly METAR. (b) Such dissemination, as well as the criteria to provide SPECI, should be agreed between the competent authority and the meteorological services provider.

text: AMC2 MET.OR.200(a)(3) Meteorological reports and other information

text: DISSEMINATION OF METAR

text: METAR, and corrections thereto, should be disseminated to international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

text: Procedures for disseminating METAR to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’.

text: AMC1 MET.OR.200(b) Meteorological reports and other information

text: SPECI

text: Where required, SPECI should be issued whenever changes when the following criteria are met:

text: (a) when the mean surface wind direction has changed by 60° or more from that given in the latest report, the mean speed before and/or after the change being 10 kt or more; (b) when the mean surface wind speed has changed by 10 kt or more from that given in the latest local report; (c) when the variation from the mean surface wind speed (gusts) has changed by 10 kt or more from that at the time of the latest local report, the mean speed before and/or after the change being 15 kt or more; (d) when the onset, cessation or change in intensity of any of the following weather phenomena occurs: (1) freezing precipitation; (2) moderate or heavy precipitation, including showers thereof; and (3) thunderstorm, with precipitation; (e) when the onset or cessation of any of the following weather phenomena occurs: (1) freezing fog; (2) thunderstorm, without precipitation; (f) when the amount of a cloud layer below 1 500 ft (450 m) changes: (1) from scattered (SCT) or less to broken (BKN) or overcast (OVC); or (2) from BKN or OVC to SCT or less.

text: AMC2 MET.OR.200(b) Meteorological reports and other information

text: DISSEMINATION OF SPECI

text: SPECI dissemination should be identical to METAR dissemination.

text: GM1 MET.OR.200(b) Meteorological reports and other information

text: DISSEMINATION OF SPECI

text: SPECI representing a deterioration of meteorological conditions should be disseminated immediately after the observation. SPECI representing a deterioration of one weather element and an improvement in another weather element should also be disseminated immediately after the observation and should then be treated as deterioration reports.

text: GM2 MET.OR.200(b) Meteorological reports and other information

text: DISSEMINATION OF SPECI

text: A SPECI representing an improvement in conditions should be disseminated only after the improvement has been maintained for 10 minutes; it should be amended before dissemination, if necessary, to indicate the conditions prevailing at the end of that 10-minute period.

text: GM3 MET.OR.200(b) Meteorological reports and other information

text: Procedures for disseminating SPECI to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’.

text: AMC1 MET.OR.200(cd) Meteorological reports and other information

text: AMC1 MET.OR.210 Observing meteorological elements

text: DISPLAY

text: Where automated equipment forms part of an integrated semi-automatic observing system, displays of data which are made available to the local ATS units should be a subset of and displayed parallel to those available in the aeronautical meteorological stations or aerodrome meteorological offices. In those displays, each meteorological element should be annotated to identify, as appropriate, the locations for which the element is representative.

text: AMC1 MET.OR.220(a) Aerodrome forecasts

text: DISSEMINATION OF TAF

text: TAF, as well as corrections and amendments thereto, should be disseminated to international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

text: GM1 MET.OR.220(a) Aerodrome forecasts

text: DISSEMINATION OF TAF

text: TAF and amendments thereto are disseminated to international OPMET databanks and the centres designated for the operation of the aeronautical fixed service Internet-based services. Guidance on the dissemination of TAF to users is provided in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’.

text: GM1 MET.OR.225(b) Forecasts for landing

text: TREND FORECAST

text: A TREND forecast is understood as being a concise statement of the expected significant changes in the meteorological conditions at that aerodrome to be appended to a METAR or SPECI, and if agreed between the aeronautical meteorological station and the appropriate ATS unit, as well in a local routine report and a local special report as well.

text: AMC1 MET.OR.235(c) Aerodrome warnings and wind shear warnings and alerts

text: Wind shear alerts should be updated at least every minute. They should be cancelled as soon as the headwind/tailwind change falls below 15 kt (7.5 m/s).

text: GM1 MET.OR.240(a)(1) Information for use by operator or flight crew GM1 MET.OR.240(ab)(2) Information for use by operator or flight crew

text: GENERAL

text: GM1 MET.OR.240(ad)(4) Information for use by operator or flight crew

text: SIGMET

text: GM1 MET.OR.240(e) Information for use by operator or flight crew

text: SPACE WEATHER ADVISORY

text: Space weather advisory information is received from space weather centres (SWXCs) in accordance with ICAO Annex 3 ‘Meteorological Service for International Air Navigation’ and ICAO Doc 10100 ‘Manual on Space Weather Information in Support of International Air Navigation’.

text: AMC1 MET.OR.245(f)(3) Meteorological watch and other information

text: AIRCRAFT IN FLIGHT

text: If the information requested from an aircraft in flight is not available in the associated meteorological watch office, that meteorological watch office should request the assistance of another meteorological watch office or another aerodrome meteorological office in providing it.

text: AMC2 MET.OR.250(a) SIGMET

text: DISSEMINATION OF SIGMET

text: SIGMET, and cancellations thereof, should be disseminated to international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

text: GM1 MET.OR.250(a) SIGMET

text: DISSEMINATION OF SIGMET

text: Procedures for the dissemination of SIGMET to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’. (a) SIGMET are disseminated to meteorological watch offices and WAFCs and to other meteorological offices. SIGMET for volcanic ash are also disseminated to VAACs. (b) SIGMET are disseminated to international OPMET databanks and the centres designated for the operation of the aeronautical fixed service Internet-based services.

text: AMC1 MET.OR.255(a) AIRMET

text: DISSEMINATION OF AIRMET

text: AIRMET, and cancellations thereof, should be disseminated to international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

text: GM1 MET.OR.255(a) AIRMET

text: DISSEMINATION OF AIRMET

text: Procedures for the dissemination of AIRMET to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’. (a) AIRMET are disseminated to meteorological watch offices in adjacent flight information regions and to other meteorological watch offices or aerodrome meteorological offices, as agreed by the competent authorities concerned. (b) AIRMET are transmitted to international operational meteorological databanks and the centres for the operation of the aeronautical fixed service Internet-based services.

text: Chapter 4 — Requirements for volcanic ash advisory centres (VAACs)

text: AMC1 MET.OR.265(a) Volcanic ash advisory centre responsibilities

text: DISSEMINATION OF VOLCANIC ASH ADVISORY

text: Volcanic ash advisory information should be disseminated to: (a) the European aviation crisis coordination cell;

text: (b) international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

text: GM2 MET.OR.265(a) Volcanic ash advisory centre responsibilities

text: DISSEMINATION OF VOLCANIC ASH ADVISORY

text: Procedures for the dissemination of volcanic ash advisory information to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’.

text: Chapter 5 — Requirements for tropical cyclone advisory centres (TCACs)

text: AMC1 MET.OR.270(a) Tropical cyclone advisory centre responsibilities

text: DISSEMINATION OF TROPICAL CYCLONE ADVISORY

text: Tropical cyclone advisory information should be disseminated to international OPMET databanks and to centres responsible for the operation of aeronautical fixed service Internet-based services.

text: GM1 MET.OR.270(a) Tropical cyclone advisory centre responsibilities

text: Procedures for the dissemination of tropical cyclone advisory information to users are described in ICAO EUR Doc 018 ‘EUR OPMET DATA MANAGEMENT HANDBOOK’.

text: Chapter 6 — Requirements for world area forecast centres (WAFCs)

text: AMC1 MET.OR.275(a) World area forecast centre responsibilities

text: DISSEMINATION OF WORLD AREA FORECAST CENTRE (WAFC) GRIDDED GLOBAL FORECASTS AND FORECASTS OF SIGNIFICANT WEATHER (SIGWX)

text: World area forecast centre (WAFC) gridded global forecasts and forecasts of significant weather (SIGWX) should be disseminated to: (a) other WAFCs; (b) centres responsible for the operation of aeronautical fixed service Internet-based services.

text: AMC1 MET.TR.115(a) Meteorological bulletins

text: DATA TYPES AND CODE FORMS FOR METEOROLOGICAL INFORMATION

text: The data types and code forms applicable to specified meteorological information should be as follows:

text: (a) ICAO Meteorological Information Exchange Model (IWXXM) GML form; (b) alphanumeric code form; (c) abbreviated plain language form; (d) ‘gridded binary’ (GRIB) code form; (e) ‘binary universal form for the representation of meteorological data’ (BUFR) code form; (f) portable network graphics (PNG) form.

text: GM1 MET.TR.115(a) Meteorological bulletins

text: ALPHANUMERICAL FORMAT DATA TYPES AND CODE FORMS FOR METEOROLOGICAL INFORMATION

text: The format of the meteorological bulletins is understood to be that in alphanumerical format. The specifications for data types and code forms for meteorological information should be as follows: — IWXXM GML form; — IWXXM context (class) diagrams with identified features, types and allowed enumerations are published in the WMO Manual on Codes (WMO-No. 306) Volume I.3, Part D ‘Representations derived from data models’; — Guidance on the implementation of IWXXM is provided in ICAO Doc 10003 ‘Manual on the ICAO Meteorological Information Exchange Model (IWXXM)’; — Guidance on the implementation and exchange of IWXXM in the EUR Region is provided in ICAO EUR Doc 033 ‘Guidelines for the Implementation of OPMET Data Exchange using IWXXM in the EUR Region’; — Alphanumeric code form as specified in the WMO Manual on Codes (WMO-No. 306), Volume I.1, Part A ‘Alphanumeric Codes’; — Abbreviated plain language form as prescribed in the AMC (AMC1 MET.TR.115(a), AMC1 MET.TR.200(a), AMC1 MET.TR.200(a)(12), AMC3 MET.TR.215(a), AMC1 MET.TR.235(a), AMC1 MET.TR.235(c), AMC2 MET.TR.250(a), AMC1 MET.TR.255(a), AMC1 MET.TR.265, AMC1 MET.TR.270) describing the meteorological information being provided; — ‘Gridded binary’ (GRIB) code form as specified in the WMO Manual on Codes (WMO-No. 306), Volume I.2, Part B ‘Binary Codes’; — ‘Binary universal form for the representation of meteorological data’ (BUFR) code form as specified in the WMO Manual on Codes (WMO-No. 306), Volume I.2, Part B ‘Binary Codes’; — portable network graphics (PNG) form.

text: GM3 MET.TR.115(a) Meteorological bulletins

text: HEADING

text: Detailed specifications on format and contents of the heading are given in the WMO Publication No 386, ‘Manual on the Global Telecommunication System’, Volume I, and in the ICAO Doc 8896 ‘ICAO Manual of Aeronautical Meteorological Practice’(ICAO Doc 8896).

text: GM1 MET.TR.115(a)(2) Meteorological bulletins

text: LOCATION INDICATOR

text: ICAO location indicators are listed in ICAO Doc 7910 - Location Indicators.

text: AMC1 MET.TR.200(a) Meteorological reports and other information

text: TEMPLATE FOR LOCAL ROUTINE REPORT AND LOCAL SPECIAL REPORT

text: Local routine reports and local special reports should be issued in abbreviated plain language, in accordance with the template below.

text: GM1 MET.TR.200(a) Meteorological reports and other information

text: RANGES AND RESOLUTIONS — LOCAL ROUTINE REPORT AND LOCAL SPECIAL REPORT

text: (a) The ranges and resolutions for the numerical elements included in local routine reports and local special reports are shown below.

text: (b) The explanations for the abbreviations can be found in ICAO Doc 8400 ‘Procedures for Air Navigation Services — ICAO Abbreviations and Codes (PANS-ABC)’.

text: (a) The ranges and resolutions for the numerical elements included in the local routine report and local special report are shown below.

text: * There is no aeronautical requirement to report surface wind speeds of 100 kt (50 m/s) or more; however, provision has been made for reporting wind speeds up to 199 kt (99 m/s) for nonaeronautical purposes, as necessary. ** Under circumstances as specified in AMC1 MET.TR.205(e)(13); otherwise a resolution of 100 ft (30 m) is to be used. (b) The explanations for the abbreviations can be found in ICAO Doc 8400 ‘Procedures for Air Navigation Services — ICAO Abbreviations and Codes (PANS-ABC)’.

text: GM2 MET.TR.200(a) Meteorological reports and other information

text: LOCAL ROUTINE REPORT AND LOCAL SPECIAL REPORT — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of local routine reports and local special reports are provided below.

text: GM1 MET.TR.200(a)(2) Meteorological reports and other information

text: LOCATION INDICATORS

text: The location indicators and their significations are published in ICAO Doc 7910 – ‘Location Indicators’.

text: AMC1 MET.TR.200(a)(4) Meteorological reports and other information

text: AUTOMATED REPORTING

text: Local routine report, and local special report, and METAR and SPECI from automatic observing systems should be identified with the word ‘AUTO’.

text: GM1 MET.TR.200(a)(4) Meteorological reports and other information

text: AUTOMATED REPORTING

text: METAR, lLocal routine report, and local special report, METAR and SPECI from automatic observing systems may be used as agreed between the aeronautical meteorological stations and the users.

text: AMC1 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — SEMI-AUTOMATIC OBSERVING SYSTEM

text: (a) In local routine report, and local special report, and in METAR and SPECI, when reported by a semi-automatic observing system, the following recent weather phenomena should be reported, up to a maximum of three groups, in the supplementary information: […]

text: AMC2 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — AUTOMATIC OBSERVING SYSTEM

text: In local routine report, and local special report, and in METAR and SPECI, when reported by an automatic observing system, the following recent weather phenomena should be reported, up to a maximum of three groups, in the supplementary information: […]

text: AMC3 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — WIND SHEAR

text: Information on wind shear should be included as supplementary information in local routine report, and local special report, and in METAR and SPECI, where local circumstances so warrant.

text: AMC4 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — SEA-SURFACE TEMPERATURE AND STATE OF THE SEA

text: In METAR and SPECI, information on sea-surface temperature and the state of the sea or the significant wave height, from aeronautical meteorological stations established on offshore structures in support of helicopter operations, should be included in the supplementary information.

text: GM1 to AMC1 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — RECENT WEATHER PHENOMENA

text: ‘Recent weather phenomena’ is understood as being the weather phenomena observed at the aerodrome during the period since the last issued routine report or last hour, whichever is the shorter, but not at the time of observation.

text: GM12 to AMC3 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — LOCAL CIRCUMSTANCES

text: Local circumstances include but are not necessarily limited to wind shear of non-transitory nature such as might be associated with low-level temperature inversions or local topography.

text: GM3 MET.TR.200(a)(12) Meteorological reports and other information

text: SUPPLEMENTARY INFORMATION — WIND SHEAR

text: The inclusion of wind shear in the supplementary information is understood to be addressed, as a minimum, in local routine report, local special report, METAR and SPECI when reported by a semiautomatic observing system.

text: GM1 MET.TR.200(b) & (c) Meteorological reports and other information

text: EXAMPLE OF METAR AND LOCAL ROUTINE REPORT

text: GM1 MET.TR.200(b) Meteorological reports and other information AMC1 MET.TR.200(c) Meteorological reports and other information

text: METAR AND SPECI — CODE FORM

text: METAR and SPECI, and corrections thereto, should be encoded using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); and (b) the alphanumeric code form for METAR as specified in point (b) of AMC1 MET.TR.115(a).

text: GM1 MET.TR.200(c)(1) Meteorological reports and other information

text: METAR — CODE FORM

text: The METAR code form is contained in the WMO Publication No 306, Manual on Codes, Volume I.1, Part A — Alphanumeric Codes.

text: GM1 MET.TR.200(c)(2) Meteorological reports and other information

text: METAR — DIGITAL FORM

text: (a) When METAR is disseminated in a digital form, this is in addition to the METAR code form. (b) Guidance on the information exchange model, GML, and the metadata profile is provided in the Manual on the Digital Exchange of Aeronautical Meteorological Information (ICAO Doc 10003).

text: GM1 MET.TR.200(f) Meteorological reports and other information

text: ISSUANCE OF LOCAL SPECIAL REPORTS AND SPECI

text: Point (f) in of MET.TR.200 relates to the list of criteria to provide local special reports and SPECI when a meteorological change occurs. The agreement between the meteorological service provider and the competent authority is introduced as these criteria are usually agreed with the competent authority. Also, in introducing this agreement, the nature of the transposed provision (Appendix 3, 2.3.3 Recommendation) of ICAO Annex 3 remains.

text: AMC1 MET.TR.200(f)(8) Meteorological reports and other information

text: ISSUANCE OF SPECI

text: Other criteria based on local aerodrome operating minima are to be considered in accordance with point (j) of AMC1 MET.TR.220(f).

text: AMC1 MET.TR.205(b)(1) Reporting of meteorological elements

text: VISIBILITY

text: In METAR and SPECI, visibility should be reported as prevailing visibility. When the visibility is not the same in different directions and: […]

text: AMC1 MET.TR.205(b)(3) Reporting of meteorological elements

text: VISIBILITY — VALUES

text: In local routine reports and local special reports, when instrumented systems are used for the measurement of visibility: […]

text: AMC1 MET.TR.205(c) Reporting of meteorological elements

text: RUNWAY VISUAL RANGE (RVR) — TOUCHDOWN ZONE VALUES

text: In METAR and SPECI: […]

text: AMC1 MET.TR.205(c)(1) Reporting of meteorological elements

text: (a) 50 m should be considered the lower limit, and 2 000 m the upper limit for RVR. (b) Outside ofBeyond these limits, local routine reports, and local special reports, and METAR and SPECI should merely indicate that the RVR is less than 50 or more than 2 000 m.

text: AMC1 MET.TR.205(c)(3) Reporting of meteorological elements

text: RUNWAY VISUAL RANGE (RVR) — VALUES FOR METAR AND SPECI

text: AMC1 MET.TR.205(d) Reporting of meteorological elements

text: PRESENT WEATHER PHENOMENA — AUTOMATIC OBSERVING SYSTEM

text: In local routine report, and local special report, and METAR and SPECI reported by an automatic observing system, the following types of present weather phenomena should be reported, using their respective abbreviations and relevant criteria, as appropriate: […]

text: AMC2 MET.TR.205(d) Reporting of meteorological elements

text: PRESENT WEATHER PHENOMENA — SEMI-AUTOMATIC OBSERVING SYSTEM

text: In local routine report, and local special report, and METAR and SPECI reported by a semi-automatic observing system, the following types of present weather phenomena should be reported, using their respective abbreviations and relevant criteria, as appropriate: […]

text: AMC3 MET.TR.205(d) Reporting of meteorological elements

text: PRESENT WEATHER PHENOMENA — UNIDENTIFIED PRECIPITATION (UP)

text: In automated local routine report, and local special report, and METAR and SPECI, in addition to drizzle (DZ), rain (RA) and snow (SN), the abbreviation ‘UP’ should be used for unidentified precipitation when the type of precipitation cannot be identified by the automatic observing system.

text: AMC1 MET.TR.205(d)(3) Reporting of meteorological elements

text: PRESENT WEATHER PHENOMENA — ADDITIONAL CHARACTERISTICS

text: (a) In local routine report, and local special report, and METAR and SPECI, only when reported by a semi-automatic observing system, the following characteristics of present weather phenomena, as necessary, should be reported using their respective abbreviations and relevant criteria, as appropriate: […] (b) In automated local routine report, and local special report, and METAR and SPECI, when showers (SH) referred to above cannot be determined based upon a method that takes account of the presence of convective cloud, the precipitation should not be characterised by ‘SH’.

text: AMC2 MET.TR.205(d)(3) Reporting of meteorological elements

text: PRESENT WEATHER PHENOMENA — INTENSITY

text: In local routine report, and local special report, and in METAR and SPECI, the relevant intensity or, as appropriate, the proximity to the aerodrome of the reported present weather phenomena should be indicated as follows: […] Vicinity (VC) Between approximately 8 and 16 km of the aerodrome reference point and used only in METAR and SPECI with present weather when not reported under AMC1 MET.TR.205(d)(3) and MET.TR.205(d)(3).

text: AMC1 MET.TR.205(e)(1) Reporting of meteorological elements

text: CLOUD

text: In local routine report, and local special report, and METAR and SPECI: […]

text: AMC2 MET.TR.205(e)(1) Reporting of meteorological elements

text: CLOUD — AUTOMATIC OBSERVING SYSTEM

text: When an automatic observing system is used to report local routine reports, and local special reports, and METAR and SPECI: […]

text: AMC1 MET.TR.205(e)(3) Reporting of meteorological elements

text: At aerodromes where low-visibility procedures are established for approach and landing, as agreed between the aeronautical meteorological station and the appropriate ATS unit, in local routine reports and local special reports, the height of cloud base should be reported in steps of 50 ft up to and including

text: 300 ft (90 m) and in steps of 100 ft (30 m) between 300 ft (90 m) and 10 000 ft (3 000 m), and the vertical visibility in steps of 50 ft (15 m) up to and including 300 ft (90 m) and in steps of 100 ft (30 m) between

text: 300 ft (90 m) and 2 000 ft (600 m).

text: GM2 MET.TR.210 Observing meteorological elements

text: OPERATIONALLY DESIRABLE ACCURACY OF OBSERVATION

text: AMC1 MET.TR.210(a) Observing meteorological elements

text: SURFACE WIND

text: (b) For METAR and SPECI, the surface wind observations should be representative of the conditions above the whole runway where there is only one runway, and the whole runway complex where there is more than one runway.

text: AMC1 MET.TR.210(a)(3) Observing meteorological elements

text: SURFACE WIND — AVERAGING

text: The averaging period for measuring variations from the mean wind speed (gusts) reported in accordance with MET.TR.205(a)(3)(iii) should be 3 seconds for local routine report, local special report, METAR, SPECI, and for wind displays used for depicting variations from the mean wind speed (gusts) in ATS units.

text: GM1 MET.TR.210(a)(3)(ii) Meteorological reports and other information

text: SURFACE WIND — AVERAGING — MARKED DISCONTINUITY

text: A marked discontinuity occurs when there is an abrupt and sustained change in wind direction of 30° or more, with a wind speed of 10 kt (5 m/s) before or after the change, or a change in wind speed of 10 kt (5 m/s) or more, lasting at least 2 minutes.

text: AMC1 MET.TR.210(b)(1) Observing meteorological elements

text: VISIBILITY — GENERAL

text: […] (e) For METAR and SPECI, the visibility observations should be representative of the aerodrome.

text: AMC1 MET.TR.210(c)(12) Observing meteorological elements

text: RUNWAY VISUAL RANGE (RVR) — SITING

text: AMC1 MET.TR.210(c)(23) Observing meteorological elements

text: RUNWAY VISUAL RANGE (RVR) — RUNWAY LIGHT INTENSITY

text: […] (d) In METAR and SPECI, the RVR should be based on the maximum light intensity available on the runway.

text: GM1 MET.TR.210(c)(23) Observing meteorological elements

text: RUNWAY VISUAL RANGE (RVR) — USE OF INSTRUMENTED SYSTEMS

text: GM2 MET.TR.210(c)(23) Observing meteorological elements

text: RUNWAY VISUAL RANGE (RVR)

text: GM1 MET.TR.210(c)(45)(ii)(B) Observing meteorological elements

text: RUNWAY VISUAL RANGE (RVR) — AVERAGING

text: AMC1 MET.TR.210(d)(1) Observing meteorological elements

text: PRESENT WEATHER — GENERAL

text: […] (b) For METAR and SPECI, the present weather information should be representative of the conditions at the aerodrome and, for certain specified present weather phenomena, in its vicinity.

text: AMC1 MET.TR.210(e) Observing meteorological elements

text: CLOUDS — GENERAL

text: […] (b) Cloud observations for METAR and SPECI should be representative of the aerodrome and its vicinity.

text: AMC1 MET.TR.210(f) Observing meteorological elements

text: AIR TEMPERATURE AND DEW-POINT TEMPERATURE

text: Observations of air temperature and dew-point temperature for local routine report, and local special report, and for METAR and SPECI, should be representative of the whole runway complex.

text: Observations of air temperature and dew-point temperature for local routine reports, and local special reports, and METAR and SPECI should be representative of the whole runway complex.

text: GM1 to AMC3 MET.TR.215(a) Forecasts and other information

text: GM1 MET.TR.215(e)(1) & (2) Forecasts and other information

text: MODEL CHARTS

text: This guidance provides examples of model charts. […]

text: (d) SIGNIFICANT WEATHER CHART (MEDIUM LEVEL)

text: MODEL SWM

text: AMC2 MET.TR.215(f) Forecasts and other information

text: CHARTS

text: (a) The minimum number of charts for flights between flight level 250 and flight level 630 should include a high-level SIGWX chart (flight level 250 to flight level 630) or a medium-level SIGWX chart (flight level 100 to flight level 450), if appropriate, and a forecast flight level 340250 hPa wind and temperature chart. […]

text: GM2 MET.TR.215(f) Forecasts and other information

text: MAP PROJECTIONS — CORRECT CONVERSION BETWEEN DIFFERENT MAP PROJECTIONS

text: When plotting shapes, particularly polygons, on maps, appropriate corrections are necessary if they are plotted on projections different to those used in the production of the original forecast area.

text: GM3 MET.TR.215(i) Forecasts and other information

text: CLIMATOLOGICAL DATA FOR AERODROME PLANNING PURPOSES

text: Climatological data required for aerodrome planning purposes areis set out in GM1 ADR-DSN.B.015(f) ‘Data to be used’.

text: GM2 MET.TR.220 Aerodrome forecasts

text: TAF — EXAMPLE OF CANCELLATION

text: GM3 MET.TR.220 Aerodrome forecasts

text: TAF — ACCURACY

text: The accuracy of TAF should be monitored using appropriate verification methodologies as agreed with the competent authority. The verification should identify the accuracy of the forecast against the required change criteria for the forecast elements: wind direction, wind speed, visibility, precipitation, cloud amount, and cloud height. Where provided, maximum and minimum temperature forecasts in TAF should be verified.Guidance on operationally desirable accuracy of TAF is given below:

text: AMC1 MET.TR.220(b) Aerodrome forecasts

text: TAF — CODE FORM

text: TAF, and amendments thereto, should be encoded using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); and (b) the alphanumeric code form for TAF as specified in point (b) of AMC1 MET.TR.115(a).

text: GM2 MET.TR.220(b) Aerodrome forecasts

text: TAF CODE FORM

text: The TAF code form is contained in the WMO Publication No 306, Manual on Codes, Volume I.1, Part A — Alphanumeric Codes.

text: AMC1 MET.TR.220(c) Aerodrome forecasts

text: PERIOD OF VALIDITY

text: […] (d) If so agreed between the competent authority and the meteorological services provider, TAF valid for 24 or 30 hours may be issued every 3 hours, and the validity should commence at 00, 03, 06, 09, 12, 15, 18 and 21 UTC. (de) At aerodromes with limited hours of operation, the beginning of the period of validity of a TAF should commence at least 1 hour prior to the aerodrome resuming operations, or more as agreed between the aerodrome meteorological office and the operators concerned, to meet planning requirements for flights that arrive at the aerodromes as soon as it is opened for use.

text: GM1 MET.TR.220(d) Aerodrome forecasts

text: TAF — DIGITAL FORM

text: (a) When TAF is disseminated in digital form, this is in addition to the TAF code form. (b) Guidance on the information exchange model, GML, and metadata profile is provided in ICAO Doc 10003 ‘Manual on the ICAO Meteorological Information Exchange Model’.

text: GM1 MET.TR.220(e)(2)(i) Aerodrome forecasts

text: TAF — PHENOMENA REDUCING VISIBILITY

text: When the visibility is forecast to be 5 000 m or less, the forecast weather phenomenon reducing visibility may be included in TAF, e.g. phenomena, and combinations thereof, such as FG, BR, HZ, -RA, -SN, etc.

text: GM1 MET.TR.220(f)(1) Aerodrome forecasts

text: TAF — USE OF CHANGE AND TIME INDICATORS

text: Guidance on the use of change and time indicators in TAF is given below:

text: GM1 MET.TR.225(c)(7)(ii) Forecasts for landing

text: TREND FORECASTS — USE OF CHANGE INDICATORS

text: Guidance on the use of change indicators in trend forecasts is given in the table below.

text: AMC1 MET.TR.225(c)(7)(iii) Forecasts for landing

text: USE OF CHANGE GROUPS — TEMPO

text: (a) When the change is forecast to begin and end wholly within the trend forecast period, the beginning and end of the change should be indicated by using the abbreviations ‘FM’ and ‘TL’ respectively, with their associated time groups.When the period of the temporary fluctuations in the meteorological conditions is forecast to begin and end wholly within the TREND forecast period, the beginning and end of the period of the temporary fluctuations should be indicated by using the abbreviations ‘FM’ and ‘TL’ respectively, with their associated time groups. (b) When the change is forecast to commence at the beginning of the trend forecast period but be completed before the end of that period, the abbreviation ‘FM’ and its associated time group should be omitted and only ‘TL’ and its associated time group should be used.When the period of the temporary fluctuations is forecast to commence at the beginning of the TREND forecast period but cease before the end of that period, the abbreviation ‘FM’ and its associated time group should be omitted and only ‘TL’ and its associated time group should be used. (c) When the change is forecast to begin during the trend forecast period and be completed at the end of that period, the abbreviation ‘TL’ and its associated time group should be omitted and only ‘FM’ and its associated time group should be used.When the period of the temporary fluctuations is forecast to begin during the TREND forecast period and cease by the end of that period, the abbreviation ‘TL’ and its associated time group should be omitted and only ‘FM’ and its associated time group should be used. (d) When the change is forecast to occur at a specified time during the trend forecast period, the abbreviation ‘AT’ followed by its associated time group should be used.When the period of the temporary fluctuations is forecast to commence at the beginning of the TREND forecast period and cease by the end of that period, both abbreviations ‘FM’ and ‘TL’ and their associated time groups should be omitted and the change indicator ‘TEMPO’ should be used alone. (e) When the change is forecast to commence at the beginning of the trend forecast period and be completed by the end of that period, or when the change is forecast to occur within the trend forecast period but the time is uncertain, the abbreviations ‘FM’, ‘TL’ or ‘AT’ and their associated time groups should be omitted and the change indicator ‘TEMPO’ should be used alone.

text: AMC1 MET.TR.235 Aerodrome warnings and wind shear warnings and alerts

text: AERODROME WARNINGS — FORMATTEMPLATE FOR AERODROME WARNINGS

text: (a) Aerodrome warnings should be issued in accordance with the template below or in another format where required by operators or aerodrome meteorological offices.

text: (b) When the above template is used, the sequence number referred to in the template should correspond to the number of aerodrome warnings issued for a given aerodrome since 00.01 UTC on the day concerned.

text: GM1 MET.TR.235 Aerodrome warnings and wind shear warnings and alerts

text: RANGES AND RESOLUTIONS — AERODROME WARNINGS

text: (a) The ranges and resolutions for the numerical elements included in aerodrome warnings are shown below.

text: (a) The ranges and resolutions for the numerical elements included in aerodrome warnings are shown below:

text: (b) The explanations for the abbreviations can be found in the Procedures for Air Navigation Services — ICAO Abbreviations and Codes (PANS ABC, ICAO Doc 8400).

text: GM2 MET.TR.235 Aerodrome warnings and wind shear warnings and alerts

text: AERODROME WARNINGS — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of aerodrome warnings are provided below.

text: GM3 MET.TR.235 Aerodrome warnings and wind shear warnings and alerts

text: PHENOMENON (M) — TOX CHEM

text: When issuing an aerodrome warning due to information related to toxic chemical affecting an aerodrome and or volcanic ash deposition, the warning should be filed by means of the use of free text up to 32 characters, e.g. TOX CHEM FCST XXXX AIRPORT NEARBY WKN. (XXXX = ICAO Location Indicator)

text: AMC1 MET.TR.235(c) Aerodrome warnings and wind shear warnings and alerts

text: FORMAT OF WIND SHEAR WARNINGS — FORMAT

text: (a) The use of text in additional to the abbreviations listed in the template in Table 6 of Appendix 41 should be kept to a minimum. The additional text should be prepared in abbreviated plain language using ICAO-approved abbreviations and numerical values.

text: AMC2 MET.TR.250(a) SIGMET

text: SIGMET — CODE FORM

text: SIGMET, and cancellations thereof, should be encoded using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); (b) abbreviated plain language as specified in point (c) of AMC1 MET.TR.115(a).

text: AMC3 MET.TR.250(a) SIGMET

text: FORMAT

text: SIGMET, when issued in graphical format, should be as specified below: (a) SIGMET FOR TROPICAL CYCLONE — MODEL STC

text: (b) SIGMET FOR VOLCANIC ASH — MODEL SVA, MERCATOR PROJECTION

text: (c) SIGMET FOR VOLCANIC ASH — MODEL SVA, POLAR STEREOGRAPHIC PROJECTION

text: (d) SIGMET FOR PHENOMENA OTHER THAN TROPICAL CYCLONES AND VOLCANIC ASH — MODEL SGE

text: AMC4 MET.TR.250(a) SIGMET

text: COORDINATION WITH NEIGHBOURING METEOROLOGICAL WATCH OFFICES (MWOs)

text: An MWO should coordinate SIGMET with neighbouring MWO(s), especially when the en-route weather phenomenon extends or is expected to extend beyond the MWO’s specified area of responsibility, to ensure harmonised SIGMET provision.

text: GM5 MET.TR.250(a) SIGMET

text: EXAMPLE OF SIGMET FOR RADIOACTIVE CLOUD

text: GM7 MET.TR.250(a) SIGMET

text: Guidance on the bilateral or multilateral coordination between MWOs of neighbouring States for the provision of SIGMET can be found in ICAO EUR Doc 014 ‘EUR SIGMET and AIRMET Guide’.

text: AMC1 MET.TR.250(c) SIGMET

text: SEQUENCE NUMBER

text: (a) The three-character sequence number should be constructed using a single letter identifying the phenomenon, followed by two numeric characters corresponding to the number of SIGMET issued for that phenomenon for the specified flight information region since 00.01 UTC on the day concerned.

text: (b) The letters to be used as the first character for the SIGMET sequence number to indicate the specified en-route weather and other phenomena for which the SIGMET has been issued should be:

text: (c) When SIGMET is issued for test purposes (‘TEST’ status indicator used in the SIGMET), then the appropriate letter for exchange test purposes should be used, i.e. ‘Y’ for a TEST volcanic ash SIGMET. When SIGMET is issued for exercise purposes (‘EXER’ status indicator used in the SIGMET), then the letter chosen should correspond to that used under normal circumstances, i.e. ‘A’ for a SIGMET issued during a volcanic ash exercise.

text: GM1 MET.TR.250(d) SIGMET

text: CRITERIA RELATED TO PHENOMENA

text: […] (f) Turbulence is considered: (1) severe whenever the peak value of the cube root of the EDR equals or exceeds 0.70.45; and (2) moderate whenever the peak value of the cube root of the EDR is equal to or above 0.40.20 and below or equal to 0.70.45. […]

text: GM1 MET.TR.250(f)(1) SIGMET

text: SIGMET - DIGITAL FORM

text: (a) When SIGMET is disseminated in digital form, this is in addition to the SIGMET code form. (b) Guidance on the information exchange model, GML, and metadata profile is provided in ICAO Doc 10003 'Manual on the ICAO Meteorological Information Exchange Model'.

text: AMC1 MET.TR.250(g) SIGMET

text: FORMAT

text: SIGMET, when issued in graphical format, should be as specified below: (a) SIGMET FOR TROPICAL CYCLONE — MODEL STC (b) SIGMET FOR VOLCANIC ASH — MODEL SVA (c) SIGMET FOR PHENOMENA OTHER THAN TROPICAL CYCLONE AND VOLCANIC ASH — MODEL SGE

text: AMC1 MET.TR.255(a) AIRMET

text: AIRMET — CODE FORM

text: AIRMET, and cancellations thereof, should be encoded using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); (b) abbreviated plain language as specified in point (c) of AMC1 MET.TR.115(a).

text: GM1 MET.TR.255(e) AIRMET

text: AIRMET — DIGITAL FORM

text: (a) When AIRMET is disseminated in digital form, this is in addition to the AIRMET code form. (b) Guidance on the information exchange model, GML, and metadata profile is provided in ICAO Doc 10003 ‘Manual on the Meteorological Information Exchange Model’.

text: AMC1 MET.TR.260 Area forecasts for low-level flights

text: AMENDMENT OF AREA FORECASTS FOR LOW-LEVEL FORECASTSFLIGHTS

text: (a) In case thethat an area forecast for low-level flights is not issued in combination with AIRMET/low-level forecast concept is not fully implemented, the criteria for amendments to the area forecast for low-level flights should as a minimum include the weather phenomena hazardous to low-level flights, which would otherwise constitute the criteria for the issuance of AIRMET. […]

text: Chapter 4 — Technical requirements for volcanic ash advisory centres (VAACs)

text: AMC1 MET.TR.265 Volcanic ash advisory centre responsibilities

text: VOLCANIC ASH ADVISORY — CODE FORM

text: Volcanic ash advisory should be disseminated using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); (b) abbreviated plain language as specified in point (c) of AMC1 MET.TR.115(a).

text: AMC2 MET.TR.265 Volcanic ash advisory centre responsibilities

text: VOLCANIC ASH ADVISORY INFORMATION — GRAPHICAL FORMAT

text: The volcanic ash advisory information listed in Appendix 6 to Annex V (Part-MET) to

text: Regulation (EU) 2017/373

text: , when prepared in graphical format, should be as specified below and issued using the portable network graphics (PNG) format as specified in point (f) of AMC1 MET.TR.115(a):

text: Example of volcanic ash advisory in graphical format from the London VAAC. Mercator projection.

text: Note: The example above is fictitious.

text: Example of volcanic ash advisory in graphical format from the Toulouse VAAC. Mercator projection.

text: Note: The example above is fictitious.

text: Example of volcanic ash advisory in graphical format from the Wellington VAAC. Polar stereographic projection.

text: Note: The example above is fictitious.

text: GM1 MET.TR.265(a) Volcanic ash advisory centres (VAACs) responsibilities

text: EXAMPLES OF ADVISORY FOR VOLCANIC ASH

text: GM1 MET.TR.265(b) Volcanic ash advisory centres (VAACs) responsibilities

text: VOLCANIC ASH ADVISORY — DIGITAL FORM

text: (a) When volcanic ash advisory is disseminated in digital form, this is in addition to the volcanic ash advisory code form. (b) Guidance on the information exchange model, GML, and metadata profile is provided in in ICAO Doc 10003 ‘Manual on the Meteorological Information Exchange Model’.

text: AMC1 MET.TR.265(c) Volcanic ash advisory centres (VAACs) responsibilities

text: Regulation (EU) 2017/373

text: , when prepared in graphical format, should be as specified below. [Graphic] Example of volcanic ash advisory in graphical format from the London VAAC. Note: The example above is fictional.

text: Chapter 5 — Technical requirements for tropical cyclone advisory centres (TCACs)

text: AMC1 MET.TR.270 Tropical cyclone advisory centre responsibilities

text: TROPICAL CYCLONE ADVISORY — CODE FORM

text: Tropical cyclone advisory should be disseminated using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); (b) abbreviated plain language as specified in point (c) of AMC1 MET.TR.115(a).

text: AMC2 MET.TR.270 Tropical cyclone advisory centre responsibilities

text: TROPICAL CYCLONE ADVISORY — GRAPHICAL FORMAT

text: Regulation (EU) 2017/373

text: Example of tropical cyclone advisory in graphical format from the La Réunion TCAC.

text: Note: The example above is based on a real event.

text: ADVISORY FOR TROPICAL CYCLONES — EXAMPLE

text: GM1 MET.TR.270(c) Tropical cyclone advisory centres (TCACs) responsibilities

text: TROPICAL-CYCLONE ADVISORY — DIGITAL FORM

text: (a) When a tropical cyclone advisory is disseminated in digital form, this is in addition to the tropical cyclone advisory code form.

text: (b) Guidance on the information exchange model, GML, and metadata profile is provided in in ICAO Doc 10003 ‘Manual on the Meteorological Information Exchange Model’.

text: AMC1 MET.TR.270(d) Tropical cyclone advisory centres (TCACs) responsibilities

text: Regulation (EU) 2017/373

text: , when prepared in graphical format, should be as specified below.

text: AMC2 MET.TR.275(a) World area forecast centre responsibilities

text: WORLD AREA FORECAST CENTRE GLOBAL GRIDDED FORECASTS — CODE FORM

text: World area forecast centre global gridded forecasts should be encoded using the GRIB code form as specified in point (d) of AMC1 MET.TR.115(a).

text: GM1 MET.TR.275(a) World area forecast centres (WAFCs) responsibilities

text: GRIB CODE

text: The GRIB code form is contained in the WMO Publication No 306, Manual on Codes, Volume I.2, Part B — Binary Codes.

text: GM2 MET.TR.275(a) World area forecast centres (WAFCs) responsibilities

text: BUFR CODE

text: The BUFR code form is contained in the WMO Publication No 306, Manual on Codes, Volume I.2, Part B — Binary Codes.

text: GM1 MET.TR.275(b)(3) World area forecast centres (WAFCs) responsibilities

text: GRID POINT FORECASTS

text: (a) Layers centred at a flight level referred to in MET.TR.275(b)(3)(v) and (vii) have a depth of 100 hPa. (b) Layers centred at a flight level referred to in MET.TR.275(b)(3)(viii) have a depth of 100 hPa for flight levels below 240, then 50 hPa for flight levels 240 and above.

text: GM2 MET.TR.275(b)(3) World area forecast centre responsibilities

text: GRID POINT FORECASTS

text: The turbulence referred to in MET.TR.275(b)(3)(viii) encompasses all types of turbulence, including clear-air turbulence and in-cloud turbulence.

text: GM3 MET.TR.275(b)(3) World area forecast centre responsibilities

text: GRID POINT FORECASTS

text: The exact pressure levels (hPa) for MET.TR.275(b)(3) (i), (ii), (iii), (iv), (vii), and (viii) are provided in ICAO Doc 8896 ‘Manual of Aeronautical Meteorological Practice’.

text: AMC1 MET.TR.275(c) World area forecast centre responsibilities

text: WORLD AREA FORECAST CENTRE (WAFC) GLOBAL FORECASTS OF SIGNIFICANT WEATHER — CODE FORM

text: World area forecast centre (WAFC) global forecasts of significant weather should be disseminated using: (a) the IWXXM GML form as specified in point (a) of AMC1 MET.TR.115(a); (b) the BUFR code form as specified in point (e) of AMC1 MET.TR.115(a).

text: AMC1 MET.TR.275(d) World area forecast centres (WAFCs) responsibilities

text: MEDIUM-LEVEL SIGWX FORECASTS

text: The medium-level SIGWX forecasts provided for flight levels between 100 and 250450 for limited geographical areas should cover the areas as shown in in Table 2 of Appendix 21.

text: GM1 to Appendix 1 ‘Template for METAR and SPECI’

text: METAR AND SPECI — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of METAR and SPECI are provided below.

text: GM1 to Appendix 3 ‘Template for TAF’

text: TAF — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of TAF are provided below.

text: GM1 to Appendix 4 ‘Template for wind shear warnings’

text: WIND SHEAR WARNINGS — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of wind shear warnings are provided below.

text: GM1 to Appendix 5 ‘Template for SIGMET and AIRMET’

text: SIGMET AND AIRMET — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of SIGMET and AIRMET are provided below.

text: GM1 to Appendix 6 ‘Template for advisory for volcanic ash’

text: ADVISORY FOR VOLCANIC ASH — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of advisory for volcanic ash are provided below.

text: GM1 to Appendix 7 ‘Template for advisory for tropical cyclones’

text: ADVISORY FOR TROPICAL CYCLONES — EXAMPLES OF ELEMENTS

text: Non-exhaustive examples of the different elements used in the formulation of advisory for tropical cyclones are provided below.