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Commission Implementing Regulation (EU) 2021/1338 of 11 August 2021 amending Implementing Regulation (EU) 2017/373 as regards reporting requirements and reporting channels between organisations, and requirements for meteorological services (Text with EEA relevance)

Type Implementing Regulation

Publication 2021-08-12

State In force

Text As published

Department European Commission, MOVE

Source EUR-Lex

articles 2

This is the act as published. Later amendments are not folded into the text below: each one is a separate act in this repository and an entry in this law's history.

Reform history JSON API

Template for SIGMET and AIRMET Key: M = inclusion mandatory; C = inclusion conditional, whenever applicable; and Note 1: The ranges and resolutions for the numerical elements included in SIGMET or AIRMET are shown in Appendix 8. Note 2: Severe or moderate icing (SEV ICE, MOD ICE) and severe or moderate turbulence (SEV TURB, MOD TURB) associated with thunderstorms, cumulonimbus clouds or tropical cyclones should not be included. Note 3: Row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the SIGMET or AIRMET. Ref. Element Detailed content SIGMET template AIRMET template 1 Location indicator of FIR/CTA (M) ICAO location indicator of the ATS unit serving the FIR or CTA to which the SIGMET/AIRMET refers nnnn 2 Identification (M) SIGMET or AIRMET identification and sequence number SIGMET nnn AIRMET [n][n]n 3 Validity period (M) Day-time groups indicating the period of validity in UTC VALID nnnnnn/nnnnnn 4 Location indicator of MWO (M) Location indicator of MWO originating the SIGMET or AIRMET with a separating hyphen nnnn– 5 New line 6 Name of the FIR/CTA (M) Location indicator and name of the FIR/CTA for which the SIGMET/AIRMET is issued nnnn nnnnnnnnnn FIR or UIR or FIR/UIR or nnnn nnnnnnnnnn CTA nnnn nnnnnnnnnn FIR[/n] 7 IF THE SIGMET OR AIRMET IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE. 8 Status indicator (C)¹⁴ Indicator of test or exercise TEST or EXER TEST or EXER 9 New line 10 Phenomenon (M) Description of the phenomenon causing the issuance of SIGMET/AIRMET OBSC TS[GR] EMBD TS[GR] FRQ TS[GR] SQL TS[GR] TC nnnnnnnnnn PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB or TC NN¹⁵ PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB SEV TURB SEV ICE SEV ICE (FZRA) SEV MTW HVY DS HVY SS [VA ERUPTION] [MT nnnnnnnnnn] [PSN Nnn[nn] or Snn[nn] Ennn[nn] or Wnnn[nn]] VA CLD RDOACT CLD SFC WIND nnn/nn[n]KT SFC VIS [n][n]nnM (nn) ISOL TS[GR] OCNL TS[GR] MT OBSC BKN CLD BKN CLD [n]nnn/[ABV][n]nnnnFT or BKN CLD SFC/[ABV][n]nnnnFT or OVC CLD [n]nnn/[ABV][n]nnnnFT or OVC CLD SFC/[ABV][n]nnnnFT ISOL CB OCNL CB FRQ CB ISOL TCU OCNL TCU FRQ TCU MOD TURB MOD ICE MOD MTW 11 Observed or forecast phenomenon (M)¹⁶,¹⁷ Indication whether the information is observed and expected to continue, or forecast OBS [AT nnnnZ] or FCST [AT nnnnZ] 12 Location (C)¹⁶,¹⁷,¹⁸ Location (referring to latitude and longitude (in degrees and minutes)) Nnn[nn] Wnnn[nn] or Nnn[nn] Ennn[nn] or Snn[nn] Wnnn[nn] or Snn[nn] Ennn[nn] or N OF Nnn[nn] or S OF Nnn[nn] or N OF Snn[nn] or S OF Snn[nn] or [AND] W OF Wnnn[nn] or E OF Wnnn[nn] or W OF Ennn[nn] or E OF Ennn[nn] or N OF Nnn[nn] or N OF Snn[nn] AND S OF Nnn[nn] or S OF Snn[nn] or W OF Wnnn[nn] or W OF Ennn[nn] AND E OF Wnnn[nn] or E OF Ennn[nn] or N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [AND N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]] or WI Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – [Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]¹⁹ or ENTIRE UIR or ENTIRE FIR or ENTIRE FIR/UIR or ENTIRE CTA or WI nnnKM (or nnnNM) OF TC CENTRE²⁰ or WI nnKM (or nnNM) OF Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]²¹ 13 Level (C) Flight level or altitude [SFC/]FLnnn or [SFC/][n]nnnnFT (or [SFC/]nnnnM) FLnnn/nnn or TOP FLnnn or [TOP] ABV FLnnn or (or [TOP] ABV [n]nnnnFT) [[n]nnnn/][n]nnnnFT) or [n]nnnnFT/]FLnnn or TOP [ABV or BLW] FLnnn²⁰ 14 Movement or expected movement (C)¹⁶,²²,²³ Movement or expected movement (direction and speed) with reference to one of the 16 points of compass, or stationary MOV N [nnKMH] or MOV NNE [nnKMH] or MOV NE [nnKMH] or MOV ENE [nnKMH] or MOV E [nnKMH] or MOV ESE [nnKMH] or MOV SE [nnKMH] or MOV SSE [nnKMH] or MOV S [nnKMH] or MOV SSW [nnKMH] or MOV SW [nnKMH] or MOV WSW [nnKMH] or MOV W [nnKMH] or MOV WNW [nnKMH] or MOV NW [nnKMH] or MOV NNW [nnKMH] (or MOV N [nnKT] or MOV NNE [nnKT] or MOV NE [nnKT] or MOV ENE [nnKT] or MOV E [nnKT] or MOV ESE [nnKT] or MOV SE [nnKT] or MOV SSE [nnKT] or MOV S [nnKT] or MOV SSW [nnKT] or MOV SW [nnKT] or MOV WSW [nnKT] or MOV W [nnKT] or MOV WNW [nnKT] or MOV NW [nnKT] or MOV NNW [nnKT]) or STNR 15 Changes in intensity (C)¹⁶ Expected changes in intensity INTSF or WKN or NC 16 Forecast time (C)¹⁶,¹⁷,²² Indication of the forecast time of the phenomenon FCST AT nnnnZ — 17 TC forecast position (C)²⁰ Forecast position of the TC centre TC CENTRE PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] or TC CENTRE PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB²⁴ — 18 Forecast position (C)¹⁶,¹⁷,¹⁸,²² Forecast position of the phenomenon at the end of the validity period of the SIGMET²⁵ Nnn[nn] Wnnn[nn] or Nnn[nn] Ennn[nn] or Snn[nn] Wnnn[nn] or Snn[nn] Ennn[nn] or N OF Nnn[nn] or S OF Nnn[nn] or N OF Snn[nn] or S OF Snn[nn] [AND] W OF Wnnn[nn] or E OF Wnnn[nn] or W OF Ennn[nn] or E OF Ennn[nn] or N OF Nnn[nn] or N OF Snn[nn] AND S OF Nnn[nn] or S OF Snn[nn] or W OF Wnnn[nn] or W OF Ennn[nn] AND E OF Wnnn[nn] or E OF Ennn[nn] or N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [AND N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]] or WI Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]¹⁹ or ENTIRE FIR or ENTIRE UIR or ENTIRE FIR/UIR or ENTIRE CTA or NO VA EXP ²⁶ or WI nnKM (or nnNM) OF Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]²¹ or WI nnnKM (nnnNM) OF TC CENTRE²⁰ — 19 Repetition of elements (C)²⁷ Repetition of elements included in a SIGMET for volcanic ash cloud or tropical cyclone [AND]²⁷ — 20 New line if repeating elements OR 21 Cancellation of SIGMET/AIRMET (C) Cancellation of SIGMET/AIRMET referring to its identification CNL SIGMET nnn nnnnnn/nnnnnn or CNL SIGMET nnn nnnnnn/nnnnnn [VA MOV TO nnnn FIR]²⁶ CNL AIRMET [n][n]n nnnnnn/nnnnnn


Template for SIGMET and AIRMET Key: M = inclusion mandatory; C = inclusion conditional, whenever applicable; and Note 1: The ranges and resolutions for the numerical elements included in SIGMET or AIRMET are shown in Appendix 8. Note 2: Severe or moderate icing (SEV ICE, MOD ICE) and severe or moderate turbulence (SEV TURB, MOD TURB) associated with thunderstorms, cumulonimbus clouds or tropical cyclones should not be included. Note 3: Row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the SIGMET or AIRMET. Ref. Element Detailed content SIGMET template AIRMET template 1 Location indicator of FIR/CTA (M) ICAO location indicator of the ATS unit serving the FIR or CTA to which the SIGMET/AIRMET refers nnnn 2 Identification (M) SIGMET or AIRMET identification and sequence number SIGMET nnn AIRMET [n][n]n 3 Validity period (M) Day-time groups indicating the period of validity in UTC VALID nnnnnn/nnnnnn 4 Location indicator of MWO (M) Location indicator of MWO originating the SIGMET or AIRMET with a separating hyphen nnnn– 5 New line 6 Name of the FIR/CTA (M) Location indicator and name of the FIR/CTA for which the SIGMET/AIRMET is issued nnnn nnnnnnnnnn FIR or UIR or FIR/UIR or nnnn nnnnnnnnnn CTA nnnn nnnnnnnnnn FIR[/n] 7 IF THE SIGMET OR AIRMET IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE. 8 Status indicator (C)¹⁴ Indicator of test or exercise TEST or EXER TEST or EXER 9 New line 10 Phenomenon (M) Description of the phenomenon causing the issuance of SIGMET/AIRMET OBSC TS[GR] EMBD TS[GR] FRQ TS[GR] SQL TS[GR] TC nnnnnnnnnn PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB or TC NN¹⁵ PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB SEV TURB SEV ICE SEV ICE (FZRA) SEV MTW HVY DS HVY SS [VA ERUPTION] [MT nnnnnnnnnn] [PSN Nnn[nn] or Snn[nn] Ennn[nn] or Wnnn[nn]] VA CLD RDOACT CLD SFC WIND nnn/nn[n]KT SFC VIS [n][n]nnM (nn) ISOL TS[GR] OCNL TS[GR] MT OBSC BKN CLD BKN CLD [n]nnn/[ABV][n]nnnnFT or BKN CLD SFC/[ABV][n]nnnnFT or OVC CLD [n]nnn/[ABV][n]nnnnFT or OVC CLD SFC/[ABV][n]nnnnFT ISOL CB OCNL CB FRQ CB ISOL TCU OCNL TCU FRQ TCU MOD TURB MOD ICE MOD MTW 11 Observed or forecast phenomenon (M)¹⁶,¹⁷ Indication whether the information is observed and expected to continue, or forecast OBS [AT nnnnZ] or FCST [AT nnnnZ] 12 Location (C)¹⁶,¹⁷,¹⁸ Location (referring to latitude and longitude (in degrees and minutes)) Nnn[nn] Wnnn[nn] or Nnn[nn] Ennn[nn] or Snn[nn] Wnnn[nn] or Snn[nn] Ennn[nn] or N OF Nnn[nn] or S OF Nnn[nn] or N OF Snn[nn] or S OF Snn[nn] or [AND] W OF Wnnn[nn] or E OF Wnnn[nn] or W OF Ennn[nn] or E OF Ennn[nn] or N OF Nnn[nn] or N OF Snn[nn] AND S OF Nnn[nn] or S OF Snn[nn] or W OF Wnnn[nn] or W OF Ennn[nn] AND E OF Wnnn[nn] or E OF Ennn[nn] or N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [AND N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]] or WI Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – [Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]¹⁹ or ENTIRE UIR or ENTIRE FIR or ENTIRE FIR/UIR or ENTIRE CTA or WI nnnKM (or nnnNM) OF TC CENTRE²⁰ or WI nnKM (or nnNM) OF Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]²¹ 13 Level (C) Flight level or altitude [SFC/]FLnnn or [SFC/][n]nnnnFT (or [SFC/]nnnnM) FLnnn/nnn or TOP FLnnn or [TOP] ABV FLnnn or (or [TOP] ABV [n]nnnnFT) [[n]nnnn/][n]nnnnFT) or [n]nnnnFT/]FLnnn or TOP [ABV or BLW] FLnnn²⁰ 14 Movement or expected movement (C)¹⁶,²²,²³ Movement or expected movement (direction and speed) with reference to one of the 16 points of compass, or stationary MOV N [nnKMH] or MOV NNE [nnKMH] or MOV NE [nnKMH] or MOV ENE [nnKMH] or MOV E [nnKMH] or MOV ESE [nnKMH] or MOV SE [nnKMH] or MOV SSE [nnKMH] or MOV S [nnKMH] or MOV SSW [nnKMH] or MOV SW [nnKMH] or MOV WSW [nnKMH] or MOV W [nnKMH] or MOV WNW [nnKMH] or MOV NW [nnKMH] or MOV NNW [nnKMH] (or MOV N [nnKT] or MOV NNE [nnKT] or MOV NE [nnKT] or MOV ENE [nnKT] or MOV E [nnKT] or MOV ESE [nnKT] or MOV SE [nnKT] or MOV SSE [nnKT] or MOV S [nnKT] or MOV SSW [nnKT] or MOV SW [nnKT] or MOV WSW [nnKT] or MOV W [nnKT] or MOV WNW [nnKT] or MOV NW [nnKT] or MOV NNW [nnKT]) or STNR 15 Changes in intensity (C)¹⁶ Expected changes in intensity INTSF or WKN or NC 16 Forecast time (C)¹⁶,¹⁷,²² Indication of the forecast time of the phenomenon FCST AT nnnnZ — 17 TC forecast position (C)²⁰ Forecast position of the TC centre TC CENTRE PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] or TC CENTRE PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB²⁴ — 18 Forecast position (C)¹⁶,¹⁷,¹⁸,²² Forecast position of the phenomenon at the end of the validity period of the SIGMET²⁵ Nnn[nn] Wnnn[nn] or Nnn[nn] Ennn[nn] or Snn[nn] Wnnn[nn] or Snn[nn] Ennn[nn] or N OF Nnn[nn] or S OF Nnn[nn] or N OF Snn[nn] or S OF Snn[nn] [AND] W OF Wnnn[nn] or E OF Wnnn[nn] or W OF Ennn[nn] or E OF Ennn[nn] or N OF Nnn[nn] or N OF Snn[nn] AND S OF Nnn[nn] or S OF Snn[nn] or W OF Wnnn[nn] or W OF Ennn[nn] AND E OF Wnnn[nn] or E OF Ennn[nn] or N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] [AND N OF LINE or NE OF LINE or E OF LINE or SE OF LINE or S OF LINE or SW OF LINE or W OF LINE or NW OF LINE Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] [– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]] or WI Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]¹⁹ or ENTIRE FIR or ENTIRE UIR or ENTIRE FIR/UIR or ENTIRE CTA or NO VA EXP ²⁶ or WI nnKM (or nnNM) OF Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]²¹ or WI nnnKM (nnnNM) OF TC CENTRE²⁰ — 19 Repetition of elements (C)²⁷ Repetition of elements included in a SIGMET for volcanic ash cloud or tropical cyclone [AND]²⁷ — 20 New line if repeating elements OR 21 Cancellation of SIGMET/AIRMET (C) Cancellation of SIGMET/AIRMET referring to its identification CNL SIGMET nnn nnnnnn/nnnnnn or CNL SIGMET nnn nnnnnn/nnnnnn [VA MOV TO nnnn FIR]²⁶ CNL AIRMET [n][n]n nnnnnn/nnnnnn

(36) Appendix 5B is deleted;

(37) Appendix 6 is replaced by the following:

‘Appendix 6

Template for advisory for volcanic ash Key: M = inclusion mandatory; O = inclusion optional; C = inclusion conditional, included whenever applicable. Note 1: The ranges and resolutions for the numerical elements included in volcanic ash advisory are shown in Appendix 8. Note 2: The explanations for the abbreviations can be found in ICAO Doc 8400 Procedures for Air Navigation Services – ICAO Abbreviations and Codes (PANS-ABC). Note 3: The inclusion of a colon (‘:’) after each element heading is mandatory. Note 4: 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. Ref. Element Detailed content Template(s) 1 Identification of the type of message (M) Type of message VA ADVISORY 2 New line 3 Status indicator (C)²⁸ Indicator of test or exercise STATUS: TEST or EXER 4 New line 5 Time of origin (M) Year, month, day, time in UTC DTG: nnnnnnnn/nnnnZ 6 New line 7 Name of VAAC (M) Name of VAAC VAAC: nnnnnnnnnnnn 8 New line 9 Name of volcano (M) Name and International Association of Volcanology and Chemistry of the Earth’s Interior number of volcano VOLCANO: nnnnnnnnnnnnnnnnnnnnnn [nnnnnn] or UNKNOWN or UNNAMED 10 New line 11 Location of volcano (M) Location of volcano in degrees and minutes PSN: Nnnnn or Snnnn Wnnnnn or Ennnnn or UNKNOWN 12 New line 13 State or region (M) State, or region if ash is not reported over a State AREA: nnnnnnnnnnnnnnnn or UNKNOWN 14 New line 15 Summit elevation (M) Summit elevation in m (or ft) SUMMIT ELEV: nnnnM (or nnnnnFT) or SFC or UNKNOWN 16 New line 17 Advisory number (M) Advisory number: year in full and message number (separate sequence for each volcano) ADVISORY NR: nnnn/nnnn 18 New line 19 Information source (M) Information source using free text INFO SOURCE: Free text up to 32 characters 20 New line 21 Colour code (O) Aviation colour code AVIATION COLOUR CODE: RED or ORANGE or YELLOW or GREEN or UNKNOWN or NOT GIVEN or NIL 22 New line 23 Eruption details (M)²⁹ Eruption details (including date/time of eruption(s)) ERUPTION DETAILS: Free text up to 64 characters or UNKNOWN 24 New line 25 Time of observation (or estimation) of volcanic ash clouds (M) Day and time (in UTC) of observation (or estimation) of volcanic ash clouds OBS (or EST) VA DTG: nn/nnnnZ 26 New line 27 Observed or estimated volcanic ash clouds (M) Horizontal (in degrees and minutes) and vertical extent at the time of observation of the observed or estimated volcanic ash clouds or, if the base is unknown, the top of the observed or estimated volcanic ash clouds; Movement of the observed or estimated volcanic ash clouds OBS VA CLD or EST VA CLD: TOP FLnnn or SFC/FLnnn or FLnnn/nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)] Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] MOV N nnKMH (or KT) or MOV NE nnKMH (or KT) or MOV E nnKMH (or KT) or MOV SE nnKMH (or KT) or MOV S nnKMH (or KT) or MOV SW nnKMH (or KT) or MOV W nnKMH (or KT) or MOV NW nnKMH (or KT) or VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FLnnn/nnn nnn/nn[n]KT ³⁰ or WIND FLnnn/nnn VRBnnKT or WIND SFC/FLnnn nnn/nn[n]KT or WIND SFC/FLnnn VRBnnKT 28 New line 29 Forecast height and position of the volcanic ash clouds (+ 6 HR) (M) Day and time (in UTC) (6 hours from the ‘Time of observation (or estimation) of volcanic ash clouds’ given in Item 12) Forecast height and position (in degrees and minutes) for each volcanic ash cloud mass for that fixed valid time FCST VA CLD +6 HR: nn/nnnnZ SFC or FLnnn/[FL]nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)]Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]³¹,³² or NO VA EXP or NOT AVBL or NOT PROVIDED 30 New line 31 Forecast height and position of the volcanic ash clouds (+ 12 HR) (M) Day and time (in UTC) (12 hours from the ‘Time of observation (or estimation) of volcanic ash clouds’ given in Item 12) Forecast height and position (in degrees and minutes) for each volcanic ash cloud mass for that fixed valid time FCST VA CLD +12 HR: nn/nnnnZ SFC or FLnnn/[FL]nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)] Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]³¹,³² or NO VA EXP or NOT AVBL or NOT PROVIDED 32 New line 33 Forecast height and position of the volcanic ash clouds (+ 18 HR) (M) Day and time (in UTC) (18 hours from the ‘Time of observation (or estimation) of volcanic ash clouds’ given in Item 12) Forecast height and position (in degrees and minutes) for each volcanic ash cloud mass for that fixed valid time FCST VA CLD +18 HR: nn/nnnnZ SFC or FLnnn/[FL]nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)] Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]³¹,³² or NO VA EXP or NOT AVBL or NOT PROVIDED 34 New line 35 Remarks (M)²⁹ Remarks, as necessary RMK: Free text up to 256 characters or NIL 36 New line 37 Next advisory (M) Year, month, day and time in UTC NXT ADVISORY: nnnnnnnn/nnnnZ or NO LATER THAN nnnnnnnn/nnnnZ or NO FURTHER ADVISORIES or WILL BE ISSUED BY nnnnnnnn/nnnnZ


Template for advisory for volcanic ash Key: M = inclusion mandatory; O = inclusion optional; C = inclusion conditional, included whenever applicable. Note 1: The ranges and resolutions for the numerical elements included in volcanic ash advisory are shown in Appendix 8. Note 2: The explanations for the abbreviations can be found in ICAO Doc 8400 Procedures for Air Navigation Services – ICAO Abbreviations and Codes (PANS-ABC). Note 3: The inclusion of a colon (‘:’) after each element heading is mandatory. Note 4: 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. Ref. Element Detailed content Template(s) 1 Identification of the type of message (M) Type of message VA ADVISORY 2 New line 3 Status indicator (C)²⁸ Indicator of test or exercise STATUS: TEST or EXER 4 New line 5 Time of origin (M) Year, month, day, time in UTC DTG: nnnnnnnn/nnnnZ 6 New line 7 Name of VAAC (M) Name of VAAC VAAC: nnnnnnnnnnnn 8 New line 9 Name of volcano (M) Name and International Association of Volcanology and Chemistry of the Earth’s Interior number of volcano VOLCANO: nnnnnnnnnnnnnnnnnnnnnn [nnnnnn] or UNKNOWN or UNNAMED 10 New line 11 Location of volcano (M) Location of volcano in degrees and minutes PSN: Nnnnn or Snnnn Wnnnnn or Ennnnn or UNKNOWN 12 New line 13 State or region (M) State, or region if ash is not reported over a State AREA: nnnnnnnnnnnnnnnn or UNKNOWN 14 New line 15 Summit elevation (M) Summit elevation in m (or ft) SUMMIT ELEV: nnnnM (or nnnnnFT) or SFC or UNKNOWN 16 New line 17 Advisory number (M) Advisory number: year in full and message number (separate sequence for each volcano) ADVISORY NR: nnnn/nnnn 18 New line 19 Information source (M) Information source using free text INFO SOURCE: Free text up to 32 characters 20 New line 21 Colour code (O) Aviation colour code AVIATION COLOUR CODE: RED or ORANGE or YELLOW or GREEN or UNKNOWN or NOT GIVEN or NIL 22 New line 23 Eruption details (M)²⁹ Eruption details (including date/time of eruption(s)) ERUPTION DETAILS: Free text up to 64 characters or UNKNOWN 24 New line 25 Time of observation (or estimation) of volcanic ash clouds (M) Day and time (in UTC) of observation (or estimation) of volcanic ash clouds OBS (or EST) VA DTG: nn/nnnnZ 26 New line 27 Observed or estimated volcanic ash clouds (M) Horizontal (in degrees and minutes) and vertical extent at the time of observation of the observed or estimated volcanic ash clouds or, if the base is unknown, the top of the observed or estimated volcanic ash clouds; Movement of the observed or estimated volcanic ash clouds OBS VA CLD or EST VA CLD: TOP FLnnn or SFC/FLnnn or FLnnn/nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)] Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] MOV N nnKMH (or KT) or MOV NE nnKMH (or KT) or MOV E nnKMH (or KT) or MOV SE nnKMH (or KT) or MOV S nnKMH (or KT) or MOV SW nnKMH (or KT) or MOV W nnKMH (or KT) or MOV NW nnKMH (or KT) or VA NOT IDENTIFIABLE FM SATELLITE DATA WIND FLnnn/nnn nnn/nn[n]KT ³⁰ or WIND FLnnn/nnn VRBnnKT or WIND SFC/FLnnn nnn/nn[n]KT or WIND SFC/FLnnn VRBnnKT 28 New line 29 Forecast height and position of the volcanic ash clouds (+ 6 HR) (M) Day and time (in UTC) (6 hours from the ‘Time of observation (or estimation) of volcanic ash clouds’ given in Item 12) Forecast height and position (in degrees and minutes) for each volcanic ash cloud mass for that fixed valid time FCST VA CLD +6 HR: nn/nnnnZ SFC or FLnnn/[FL]nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)]Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]³¹,³² or NO VA EXP or NOT AVBL or NOT PROVIDED 30 New line 31 Forecast height and position of the volcanic ash clouds (+ 12 HR) (M) Day and time (in UTC) (12 hours from the ‘Time of observation (or estimation) of volcanic ash clouds’ given in Item 12) Forecast height and position (in degrees and minutes) for each volcanic ash cloud mass for that fixed valid time FCST VA CLD +12 HR: nn/nnnnZ SFC or FLnnn/[FL]nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)] Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]]³¹,³² or NO VA EXP or NOT AVBL or NOT PROVIDED 32 New line 33 Forecast height and position of the volcanic ash clouds (+ 18 HR) (M) Day and time (in UTC) (18 hours from the ‘Time of observation (or estimation) of volcanic ash clouds’ given in Item 12) Forecast height and position (in degrees and minutes) for each volcanic ash cloud mass for that fixed valid time FCST VA CLD +18 HR: nn/nnnnZ SFC or FLnnn/[FL]nnn [nnKM WID LINE BTN (nnNM WID LINE BTN)] Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn][– Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]³¹,³² or NO VA EXP or NOT AVBL or NOT PROVIDED 34 New line 35 Remarks (M)²⁹ Remarks, as necessary RMK: Free text up to 256 characters or NIL 36 New line 37 Next advisory (M) Year, month, day and time in UTC NXT ADVISORY: nnnnnnnn/nnnnZ or NO LATER THAN nnnnnnnn/nnnnZ or NO FURTHER ADVISORIES or WILL BE ISSUED BY nnnnnnnn/nnnnZ

(38) Appendix 7 is replaced by the following:

‘Appendix 7

Template for advisory for tropical cyclones Key: M = inclusion mandatory; C = inclusion conditional, included whenever applicable; O = inclusion optional; = = a double line indicates that the text following it should be placed on the subsequent line. Note 1: The ranges and resolutions for the numerical elements included in tropical cyclone advisory are shown in Appendix 8. Note 2: The explanations for the abbreviations can be found in ICAO Doc 8400 Procedures for Air Navigation Services – ICAO Abbreviations and Codes (PANS-ABC). Note 3: The inclusion of a colon (‘:’) after each element heading is mandatory. Note 4: 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. Ref. Element Detailed content Template(s) 1 Identification of the type of message (M) Type of message TC ADVISORY 2 New line 3 Status indicator (C)³³ Indicator of test or exercise STATUS: TEST or EXER 4 New line 5 Time of origin (M) Year, month, day and time of issue in UTC DTG: nnnnnnnn/nnnnZ 6 New line 7 Name of TCAC (M) Name of TCAC (location indicator or full name) TCAC: nnnn or nnnnnnnnnn 8 New line 9 Name of tropical cyclone (M) Name of tropical cyclone or‘NN’ for unnamed tropical cyclone TC: nnnnnnnnnnnn or NN 10 New line 11 Advisory number (M) Advisory: Year in full and message number (separate sequence for each tropical cyclone) ADVISORY NR: nnnn/[n][n][n]n 12 New line 13 Observed position of the centre (M) Day and time (in UTC) and position of the centre of the tropical cyclone (in degrees and minutes) OBS PSN: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 14 New line 15 Observed CB cloud (O)³⁴ Location of CB cloud (referring to the latitude and longitude (in degrees and minutes)) and vertical extent (flight level) CB: WI nnnKM (or nnnNM) OF TC CENTRE or WI³⁵ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – [Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] TOP [ABV or BLW] FLnnn NIL 16 New line 17 Direction and speed of movement (M) Direction and speed of movement given in 16 compass points and km/h (or kt) respectively or stationary (< 2 km/h (1 kt)) MOV: N nnKMH (or KT) or NNE nnKMH (or KT) or NE nnKMH (or KT) or ENE nnKMH (or KT) or E nnKMH (or KT) or ESE nnKMH (or KT) or SE nnKMH (or KT) or SSE nnKMH (or KT) or S nnKMH (or KT) or SSW nnKMH (or KT) or SW nnKMH (or KT) or WSW nnKMH (or KT) or W nnKMH (or KT) or WNW nnKMH (or KT) or NW nnKMH (or KT) or NNW nnKMH (or KT) or STNR 18 New line 19 Changes in intensity (M) Changes of maximum surface wind speed at time of observation INTST CHANGE: INTSF or WKN or NC 20 New line 21 Central pressure (M) Central pressure (in hPa) C: nnnHPA 22 New line 23 Maximum surface wind (M) Maximum surface wind near the centre (mean surface wind over 10 minutes, in kt) MAX WIND: nn[n]KT 24 New line 25 Forecast of centre position (+ 6 HR) (M) Day and time (in UTC) (6 hours from the DTG given in Item 5); Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +6 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 26 New line 27 Forecast of maximum surface wind (+ 6 HR) (M) Forecast of maximum surface wind (6 hours after the DTG given in Item 5) FCST MAX WIND +6 HR: nn[n]KT 28 New line 29 Forecast of centre position (+ 12 HR) (M) Day and time (in UTC) (12 hours from the DTG given in Item 5) Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +12 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 30 New line 31 Forecast of maximum surface wind (+ 12 HR) (M) Forecast of maximum surface wind (12 hours after the DTG given in Item 5) FCST MAX WIND +12 HR: nn[n]KT 32 New line 33 Forecast of centre position (+ 18 HR) (M) Day and time (in UTC) (18 hours from the DTG given in Item 5) Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +18 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 34 New line 35 Forecast of maximum surface wind (+ 18 HR) (M) Forecast of maximum surface wind (18 hours after the DTG given in Item 5) FCST MAX WIND +18 HR: nn[n]KT 36 New line 37 Forecast of centre position (+ 24 HR) (M) Day and time (in UTC) (24 hours from the DTG given in Item 5) Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +24 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 38 New line 39 Forecast of maximum surface wind (+ 24 HR) (M) Forecast of maximum surface wind (24 hours after the DTG given in Item 5) FCST MAX WIND +24 HR: nn[n]KT 40 New line 41 Remarks (M) Remarks, as necessary RMK: Free text up to 256 characters or NIL 42 New line 43 Expected time of issuance of next advisory (M) Expected year, month, day and time (in UTC) of issuance of next advisory NXT MSG: [BFR] nnnnnnnn/nnnnZ or NO MSG EXP


Template for advisory for tropical cyclones Key: M = inclusion mandatory; C = inclusion conditional, included whenever applicable; O = inclusion optional; = = a double line indicates that the text following it should be placed on the subsequent line. Note 1: The ranges and resolutions for the numerical elements included in tropical cyclone advisory are shown in Appendix 8. Note 2: The explanations for the abbreviations can be found in ICAO Doc 8400 Procedures for Air Navigation Services – ICAO Abbreviations and Codes (PANS-ABC). Note 3: The inclusion of a colon (‘:’) after each element heading is mandatory. Note 4: 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. Ref. Element Detailed content Template(s) 1 Identification of the type of message (M) Type of message TC ADVISORY 2 New line 3 Status indicator (C)³³ Indicator of test or exercise STATUS: TEST or EXER 4 New line 5 Time of origin (M) Year, month, day and time of issue in UTC DTG: nnnnnnnn/nnnnZ 6 New line 7 Name of TCAC (M) Name of TCAC (location indicator or full name) TCAC: nnnn or nnnnnnnnnn 8 New line 9 Name of tropical cyclone (M) Name of tropical cyclone or‘NN’ for unnamed tropical cyclone TC: nnnnnnnnnnnn or NN 10 New line 11 Advisory number (M) Advisory: Year in full and message number (separate sequence for each tropical cyclone) ADVISORY NR: nnnn/[n][n][n]n 12 New line 13 Observed position of the centre (M) Day and time (in UTC) and position of the centre of the tropical cyclone (in degrees and minutes) OBS PSN: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 14 New line 15 Observed CB cloud (O)³⁴ Location of CB cloud (referring to the latitude and longitude (in degrees and minutes)) and vertical extent (flight level) CB: WI nnnKM (or nnnNM) OF TC CENTRE or WI³⁵ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – [Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] – Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn]] TOP [ABV or BLW] FLnnn NIL 16 New line 17 Direction and speed of movement (M) Direction and speed of movement given in 16 compass points and km/h (or kt) respectively or stationary (< 2 km/h (1 kt)) MOV: N nnKMH (or KT) or NNE nnKMH (or KT) or NE nnKMH (or KT) or ENE nnKMH (or KT) or E nnKMH (or KT) or ESE nnKMH (or KT) or SE nnKMH (or KT) or SSE nnKMH (or KT) or S nnKMH (or KT) or SSW nnKMH (or KT) or SW nnKMH (or KT) or WSW nnKMH (or KT) or W nnKMH (or KT) or WNW nnKMH (or KT) or NW nnKMH (or KT) or NNW nnKMH (or KT) or STNR 18 New line 19 Changes in intensity (M) Changes of maximum surface wind speed at time of observation INTST CHANGE: INTSF or WKN or NC 20 New line 21 Central pressure (M) Central pressure (in hPa) C: nnnHPA 22 New line 23 Maximum surface wind (M) Maximum surface wind near the centre (mean surface wind over 10 minutes, in kt) MAX WIND: nn[n]KT 24 New line 25 Forecast of centre position (+ 6 HR) (M) Day and time (in UTC) (6 hours from the DTG given in Item 5); Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +6 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 26 New line 27 Forecast of maximum surface wind (+ 6 HR) (M) Forecast of maximum surface wind (6 hours after the DTG given in Item 5) FCST MAX WIND +6 HR: nn[n]KT 28 New line 29 Forecast of centre position (+ 12 HR) (M) Day and time (in UTC) (12 hours from the DTG given in Item 5) Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +12 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 30 New line 31 Forecast of maximum surface wind (+ 12 HR) (M) Forecast of maximum surface wind (12 hours after the DTG given in Item 5) FCST MAX WIND +12 HR: nn[n]KT 32 New line 33 Forecast of centre position (+ 18 HR) (M) Day and time (in UTC) (18 hours from the DTG given in Item 5) Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +18 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 34 New line 35 Forecast of maximum surface wind (+ 18 HR) (M) Forecast of maximum surface wind (18 hours after the DTG given in Item 5) FCST MAX WIND +18 HR: nn[n]KT 36 New line 37 Forecast of centre position (+ 24 HR) (M) Day and time (in UTC) (24 hours from the DTG given in Item 5) Forecast position (in degrees and minutes) of the centre of the tropical cyclone FCST PSN +24 HR: nn/nnnnZ Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] 38 New line 39 Forecast of maximum surface wind (+ 24 HR) (M) Forecast of maximum surface wind (24 hours after the DTG given in Item 5) FCST MAX WIND +24 HR: nn[n]KT 40 New line 41 Remarks (M) Remarks, as necessary RMK: Free text up to 256 characters or NIL 42 New line 43 Expected time of issuance of next advisory (M) Expected year, month, day and time (in UTC) of issuance of next advisory NXT MSG: [BFR] nnnnnnnn/nnnnZ or NO MSG EXP

(39) Appendix 8 is replaced by the following:

‘Appendix 8

Ranges and resolutions for the numerical elements included in volcanic ash advisory, tropical cyclone advisory, SIGMET, AIRMET, aerodrome and wind shear warnings Note: Row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the template. Ref. Elements Range Resolution 1 Summit elevation: FT 000–27 000 1 M 000–8 100 1 2 Advisory number: for VA (index)³⁶ 000–2 000 1 for TC (index)³⁶ 00–99 1 3 Maximum surface wind: KT 00–99 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: ° (degrees) 00–90 1 (minutes) 00–60 1 10 Longitudes: ° (degrees) 000–180 1 (minutes) 00–60 1 11 Flight levels: 000–650 10 12 Movement: KMH 0–300 10 KT 0–150 5


Ranges and resolutions for the numerical elements included in volcanic ash advisory, tropical cyclone advisory, SIGMET, AIRMET, aerodrome and wind shear warnings Note: Row numbers in the ‘Ref.’ column are included only for clarity and ease of reference, and are not part of the template. Ref. Elements Range Resolution 1 Summit elevation: FT 000–27 000 1 M 000–8 100 1 2 Advisory number: for VA (index)³⁶ 000–2 000 1 for TC (index)³⁶ 00–99 1 3 Maximum surface wind: KT 00–99 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: ° (degrees) 00–90 1 (minutes) 00–60 1 10 Longitudes: ° (degrees) 000–180 1 (minutes) 00–60 1 11 Flight levels: 000–650 10 12 Movement: KMH 0–300 10 KT 0–150 5

[^ntr1-L_2021289EN.01002801-E0001]: When a meteorological element is temporarily missing, or its value is considered temporarily as incorrect, it is replaced by a solidus (‘/’) for each digit of the abbreviation of the text message and indicated as missing to ensure reliable translation into other code forms.

[^ntr2-L_2021289EN.01002801-E0002]: To be included if the visibility or the runway visual range is < 1 500 m for up to a maximum of four runways.

[^ntr3-L_2021289EN.01002801-E0003]: ‘Heavy’ is used to indicate ‘tornado’ or ‘waterspout’; ‘moderate’ (no qualifier) to indicate ‘funnel cloud not reaching the ground’.

For automated reports only.

In the case of automated reports, solidi (‘///’) may replace the relevant cloud type, as appropriate, dependent on the capability of the automatic observing system. Furthermore, solidi may replace cloud amount and/or cloud height of reported CB or TCU layer.

To be included whenever applicable. No qualifier for moderate intensity.

Up to four cloud layers.

Consisting of up to a maximum of four temperatures (two maximum temperatures and two minimum temperatures).

Used only when SIGMET/AIRMET is issued to indicate that a test or an exercise is taking place. When the word ‘TEST’ or the abbreviation ‘EXER’ is included, the message may contain information that should not be used operationally or will otherwise end immediately after the word ‘TEST’.

Used for unnamed tropical cyclones.

In the case of volcanic ash cloud covering more than one area within the FIR, these elements can be repeated, as necessary. Each location and forecast position are to be preceded by an observed or forecast time.

In the case of cumulonimbus clouds associated with a tropical cyclone covering more than one area within the FIR, these elements can be repeated as necessary. Each location and forecast position must be preceded by an observed or forecast time.

For SIGMET for radioactive cloud, only within (WI) is to be used for the elements ‘location’ and ‘forecast position’.

The number of coordinates are to be kept to a minimum and should not normally exceed seven.

Only for SIGMET for tropical cyclones.

Only for SIGMET for radioactive cloud. A radius of up to 30 kilometres (or 16 nautical miles) from the source and a vertical extent from surface (SFC) to the upper limit of the flight information region/upper flight information region (FIR/UIR) or control area (CTA) is to be applied.

The elements ‘forecast time’ and ‘forecast position’ are not to be used in conjunction with the element ‘movement or expected movement’.

For SIGMET for radioactive cloud, only stationary (STNR) is to be used for the element ‘movement or expected movement’.

The term ‘CB’ is to be used when the forecast position for the cumulonimbus cloud is included.

The forecast position for cumulonimbus (CB) cloud occurring in connection with tropical cyclones relates to the forecast time of the tropical cyclone centre position, not to the end of the validity period of the SIGMET.

Only for SIGMET for volcanic ash.

To be used for more than one volcanic ash clouds or cumulonimbus clouds associated with a tropical cyclone simultaneously affecting the FIR concerned.’

Used only when the message is issued to indicate that a test or an exercise is taking place. When the word ‘TEST’ or the abbreviation ‘EXER’ is included, the message may contain information that should not be used operationally or will otherwise end immediately after the word ‘TEST’.

The term ‘resuspended’ to be used for volcanic ash deposits raised by the wind.

If a volcanic ash cloud is reported (e.g. AIREP) but not identifiable from the satellite data.

A straight line between two points drawn on a map in the Mercator projection or a straight line between two points which crosses lines of longitude at a constant angle.

Up to four selected layers.’

In the case of CB clouds associated with a tropical cyclone covering more than one area within the area of responsibility, this element can be repeated, as necessary.

The number of coordinates should be kept to a minimum and should not normally exceed seven.’

Non-dimensional.’

ANNEX V

Appendix 3 of Annex VI to Implementing Regulation (EU) 2017/373 is replaced by the following:

‘Appendix 3

SNOWTAM FORMAT

Image omitted; see official source

INSTRUCTIONS FOR THE COMPLETION OF THE SNOWTAM FORMAT

1. General

a) When reporting on more than one runway, repeat Items B to H (aeroplane performance calculation section).

b) The letters used to indicate items are only used for reference purpose and shall not be included in the messages. The letters, M (mandatory), C (conditional) and O (optional) mark the usage and information and shall be included as explained below.

c) Metric units shall be used and the unit of measurement shall not be reported.

d) The maximum validity of SNOWTAM is 8 hours. New SNOWTAM shall be issued whenever a new runway condition report is received.

e) A SNOWTAM cancels the previous SNOWTAM.

f) The abbreviated heading ‘TTAAiiii CCCC MMYYGGgg (BBB)’ is included to facilitate the automatic processing of SNOWTAM messages in computer databanks. The explanation of these symbols is:


TT	=	data designator for SNOWTAM = SW;
AA	=	geographical designator for Member States, e.g. LF = FRANCE;
iiii	=	SNOWTAM serial number in a four-digit group;
CCCC	=	four-letter location indicator of the aerodrome to which the SNOWTAM refers;
MMYYGGgg	=	date/time of observation/measurement, whereby:
MM	=	month, e.g. January = 01, December = 12;
YY	=	day of the month;
GGgg	=	time in hours (GG) and minutes (gg) UTC;
(BBB)	=	optional group for:

Correction, in the case of an error, to a SNOWTAM message previously disseminated with the same serial number = COR.

Brackets in (BBB) shall be used to indicate that this group is optional.

When reporting on more than one runway and individual dates/times of observation/assessment are indicated by repeated Item B, the latest date/time of observation/assessment shall be inserted in the abbreviated heading (MMYYGGgg).

g) The text ‘SNOWTAM’ in the SNOWTAM Format and the SNOWTAM serial number in a four-digit group shall be separated by a space, e.g. SNOWTAM 0124.

h) For readability purposes for the SNOWTAM message, a linefeed shall be included after the SNOWTAM serial number, after Item A, and after the aeroplane performance calculation section.

i) When reporting on more than one runway, repeat the information in the aeroplane performance calculation section from the date and time of assessment for each runway before the information in the situational awareness section.

j) Mandatory information is:

1) AERODROME LOCATION INDICATOR;

2) DATE AND TIME OF ASSESSMENT;

3) LOWER RUNWAY DESIGNATOR NUMBER;

4) RUNWAY CONDITION CODE FOR EACH RUNWAY THIRD; and

5) CONDITION DESCRIPTION FOR EACH RUNWAY THIRD (when runway condition code (RWYCC) is reported 1–5).

2. Aeroplane performance calculation section


Item A	–	Aerodrome location indicator (four-letter location indicator).
Item B	–	Date and time of assessment (eight-figure date/time group giving time of observation as month, day, hour and minute in UTC).
Item C	–	Lower runway designator number (nn[L] or nn[C] or nn[R]). Only one runway designator shall be inserted for each runway and always the lower number.
Item D	–	Runway condition code for each runway third. Only one digit (0, 1, 2, 3, 4, 5 or 6) is inserted for each runway third, separated by an oblique stroke (n/n/n).
Item E	–	Per cent coverage for each runway third. When provided, insert 25, 50, 75 or 100 for each runway third, separated by an oblique stroke ([n]nn/[n]nn/[n]nn). This information shall be provided only when the runway condition for each runway third (Item D) has been reported as other than 6 and there is a condition description for each runway third (Item G) that has been reported other than ‘DRY’. When the conditions are not reported, this shall be signified by the insertion of ‘NR’ for the appropriate runway third(s).
Item F	–	Depth of loose contaminant for each runway third. When provided, insert in millimetres for each runway third, separated by an oblique stroke (nn/nn/nn or nnn/nnn/nnn). This information shall only be provided for the following contamination types: — standing water, values to be reported 04, then assessed value. Significant changes 3 mm; — slush, values to be reported 03, then assessed value. Significant changes 3 mm; — wet snow, values to be reported 03, then assessed value. Significant changes 5 mm; and — dry snow, values to be reported 03, then assessed value. Significant changes 20 mm. When the conditions are not reported, this shall be signified by the insertion of ‘NR’ for the appropriate runway third(s).
Item G	–	Condition description for each runway third. Any of the following condition descriptions for each runway third, separated by an oblique stroke, shall be inserted. COMPACTED SNOW DRY SNOW DRY SNOW ON TOP OF COMPACTED SNOW DRY SNOW ON TOP OF ICE FROST ICE SLIPPERY WET SLUSH SPECIALLY PREPARED WINTER RUNWAY STANDING WATER WATER ON TOP OF COMPACTED SNOW WET WET ICE WET SNOW WET SNOW ON TOP OF COMPACTED SNOW WET SNOW ON TOP OF ICE DRY (only reported when there is no contaminant) When the conditions are not reported, this shall be signified by the insertion of ‘NR’ for the appropriate runway third(s).
Item H	–	Width of runway to which the runway condition codes apply. The width in metres, if less than the published runway width, shall be inserted.

3. Situational awareness section

Elements in the situational awareness section shall end with a full stop.

Elements in the situational awareness section for which no information exists, or where the conditional circumstances for publication are not fulfilled, shall be left out completely.


Item I	–	Reduced runway length. The applicable runway designator and available length in metres shall be inserted (e.g. RWY nn [L] or nn [C] or nn [R] REDUCED TO [n]nnn). This information is conditional when a NOTAM has been published with a new set of declared distances.
Item J	–	Drifting snow on the runway. When reported, ‘DRIFTING SNOW’ shall be inserted with a space ‘DRIFTING SNOW’ (RWY nn or RWY nn[L] or nn[C] or nn[R] DRIFTING SNOW).
Item K	–	Loose sand on the runway. When loose sand is reported on the runway, the lower runway designator shall be inserted with a space ‘LOOSE SAND’ (RWY nn or RWY nn[L] or nn[C] or nn[R] LOOSE SAND).
Item L	–	Chemical treatment on the runway. When chemical treatment has been reported applied, the lower runway designator shall be inserted with a space ‘CHEMICALLY TREATED’ (RWY nn or RWY nn[L] or nn[C] or nn[R] CHEMICALLY TREATED).
Item M	–	Snow banks on the runway. When snow banks are reported present on the runway, the lower runway designator shall be inserted with a space ‘SNOWBANK’ and with a space left ‘L’ or right ‘R’ or both sides ‘LR’, followed by the distance in metres from centre line separated by a space ‘FM CL’ (RWY nn or RWY nn[L] or nn[C] or nn[R] SNOWBANK Lnn or Rnn or LRnn FM CL).
Item N	–	Snowbanks on a taxiway. When snowbanks are present on taxiway(s), the taxiway(s) designator(s) shall be inserted with a space ‘SNOWBANKS’ (TWY [nn]n or TWYS [nn]n/[nn]n/[nn]n… or ALL TWYS SNOWBANKS).
Item O	–	Snow banks adjacent to the runway. When snow banks are reported present, penetrating the height profile in the aerodrome snow plan, the lower runway designator and ‘ADJ SNOWBANKS’ shall be inserted (RWY nn or RWY nn[L] or nn[C] or nn[R] ADJ SNOWBANKS).
Item P	–	Taxiway conditions. When taxiway conditions are reported slippery or poor, the taxiway designator followed by a space ‘POOR’ shall be inserted (TWY [n or nn] POOR or TWYS [n or nn]/[n or nn]/[n or nn] POOR… or ALL TWYS POOR).
Item R	–	Apron conditions. When apron conditions are reported slippery or poor, the apron designator followed by a space ‘POOR’ shall be inserted (APRON [nnnn] POOR or APRONS [nnnn]/[nnnn]/[nnnn] POOR or ALL APRONS POOR).
Item S	–	(NR) Not reported.
Item T	–	Plain-language remarks.

’

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