# Commission Implementing Regulation (EU) 2017/373 of 1 March 2017 laying down common requirements for providers of air traffic management/air navigation services and other air traffic management network functions and their oversight, repealing Regulation (EC) No 482/2008, Implementing Regulations (EU) No 1034/2011, (EU) No 1035/2011 and (EU) 2016/1377 and amending Regulation (EU) No 677/2011 (Text with EEA relevance), Appendix 5A: Template for SIGMET and AIRMET

Extent: E+W+S+N.I.

Key:
M inclusion mandatory;
C inclusion conditional, whenever applicable; and
= a double line indicates that the text following it shall be placed on the subsequent line.
Note:
the ranges and resolutions for the numerical elements included in SIGMET/AIRMET are shown in Appendix 8.
Only for SIGMET for tropical cyclones.
Only for SIGMET for volcanic ash.
To be used for two volcanic ash clouds or two centres of tropical cyclones simultaneously affecting the FIR concerned.
The number of coordinates shall be kept to a minimum and shall not normally exceed seven.
The elements ‘ forecast time ’ and ‘ forecast position ’ are not to be used in conjunction with the element ‘ movement or expected movement ’ .
Note: severe or moderate icing and severe or moderate turbulence (SEV ICE, MOD ICE, SEV TURB, MOD TURB) associated with thunderstorms, cumulonimbus clouds or tropical cyclones shall not be included.
Element
Detailed content
SIGMET template
AIRMET template
SIGMET Examples
AIRMET Examples
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
YUCC
YUDD
Identification (M)
SIGMET or AIRMET identification and sequence number
SIGMET nnn
AIRMET [n][n]n
SIGMET U05
SIGMET I12
AIRMET 2
AIRMET 19
AIRMET B19
Validity period (M)
Day-time groups indicating the period of validity in UTC
VALID nnnnnn/nnnnnn
VALID 010000/010400
VALID 221215/221600
VALID 101520/101800
VALID 251600/252200
VALID 152000/160000
VALID 192300/200300
Location indicator of MWO (M)
Location indicator of MWO originating the SIGMET or AIRMET with a separating hyphen
nnnn–
YUDO–
YUSO–
Name of the FIR/CTA (M)
Location indicator and name of the FIR/CTA for which the SIGMET/AIRMET is issued
nnnn nnnnnnnnnn FIR[/UIR] or nnnn nnnnnnnnnn CTA
nnnn nnnnnnnnnn
FIR[/n]
YUCC AMSWELL FIR
YUDD SHANLON FIR/UIR
YUDD SHANLON CTA
YUCC AMSWELL FIR/2
YUDD SHANLON FIR
IF THE SIGMET IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE
Phenomenon (M)
Description of the phenomenon causing the issuance of SIGMET/AIRMET
OBSC TS[GR]
EMBD TS[GR]
FRQ TS[GR]
SQL TS[GR]
SFC WIND nnn/nn[n]MPS
(or SFC WIND nnn/nn[n]KT)
OBSC TS
OBSC TSGR
EMBD TS
EMBD TSGR
FRQ TS
FRQ TSGR
SQL TS
SQL TSGR
TC GLORIA PSN N10 W060 CB
TC NN PSN S2030
E06030 CB
SEV TURB
SEV ICE
SEV ICE (FZRA)
SEV MTW
HVY DS
HVY SS
VA ERUPTION MT
ASHVAL PSN S15 E073
VA CLD
RDOACT CLD
SFC WIND 040/40MPS
SFC WIND 310/20KT
SFC VIS 1500M (BR)
ISOL TS
ISOL TSGR
OCNL TS
OCNL TSGR
MT OBSC
BKN CLD 120/900M
BKN CLD 400/3000FT
BKN CLD SFC/3000M
BKN CLD SFC/ABV10000FT
OVC CLD 270/ABV3000M OVC CLD 900/ABV10000FT
OVC CLD SFC/3000M
OVC CLD SFC/ABV10000FT
ISOL CB
OCNL CB
FRQ CB
ISOL TCU
OCNL TCU
FRQ TCU
MOD TURB
MOD ICE
MOD MTW
TC nnnnnnnnnn PSN Nnn[nn] or Snn[nn] Wnnn[nn] or Ennn[nn] CB or TC NN 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 VIS nnnnM (nn)
ISOL TS[GR]
OCNL TS[GR]
MT OBSC
BKN CLD
nnn/[ABV]nnnnM
(or BKN CLD nnn/[ABV][n]nnnnFT) or BKN CLD SFC/[ABV]nnnnM
(or BKN CLD SFC/[ABV][n]nnnnFT)
OVC CLD nnn/[ABV]nnnnM
(or OVC CLD nnn/[ABV][n]nnnnFT) or OVC CLD SFC/[ABV]nnnnM
(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
Observed or forecast phenomenon (M)
Indication whether the information is observed and expected to continue, or forecast
OBS [AT nnnnZ] or
FCST [AT nnnnZ]
OBS
OBS AT 1210Z
FCST
FCST AT 1815Z
Location (C)
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]]
or
APRX nnKM WID LINE BTN (or 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]]
or
ENTIRE FIR/UIR
or
ENTIRE CTA
or
WI nnnKM (or nnnNM) OF TC CENTRE
N2020 W07005
N48 E010
S60 W160
S0530 E16530
N OF N50
S OF N5430
N OF S10
S OF S4530
W OF W155
E OF W45
W OF E15540
E OF E09015
N OF N1515 AND W OF E13530
S OF N45 AND N OF N40
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
WI N6030 E02550 – N6055 E02500 –
N6050 E02630 – N6030 E02550
APRX 50KM WID LINE BTN N64 W017 – N60 W010 – N57 E010
ENTIRE FIR
ENTIRE FIR/UIR
ENTIRE CTA
WI 400KM OF TC CENTRE
WI 250NM OF TC CENTRE
Level (C)
Flight level or altitude
[SFC/]FLnnn or [SFC/]nnnnM (or [SFC/][n]nnnnFT) or FLnnn/nnn or TOP FLnnn or [TOP] ABV FLnnn or [nnnn/]nnnnM (or [[n]nnnn/][n]nnnnFT) or [nnnnM/]FLnnn (or [[n]nnnnFT/]FLnnn)
or
TOP [ABV or BLW] FLnnn
FL180
SFC/FL070
SFC/3000M
SFC/10000FT
FL050/080
TOP FL390
ABV FL250
TOP ABV FL100
3000M
2000/3000M
8000FT
6000/12000FT
2000M/FL150
10000FT/FL250
TOP FL500
TOP ABV FL500
TOP BLW FL450
Movement or expected movement (C)
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
MOV SE
MOV NNW
MOV E 40KMH
MOV E 20KT
MOV WSW 20KT
STNR
Changes in intensity (C)
Expected changes in intensity
INTSF or WKN or NC
INTSF
WKN
NC
Forecast time (C)
Indication of the forecast time of phenomenon
FCST AT nnnnZ
—
FCST AT 2200Z
—
Forecast position (C)
Forecast position of volcanic ash cloud or the centre of the tropical cyclone or other hazardous phenomena6 at the end of the validity period of the SIGMET
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]
or
APRX 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]]
or
ENTIRE FIR[/UIR]
or
ENTIRE CTA
or
TC CENTRE PSN Nnn[nn] or
Snn[nn] Wnnn[nn] or
Ennn[nn]
or
NO VA EXP
—
N30 W170
N OF N30
S OF S50 AND W OF
E170
S OF N46 AND N OF N39
NE OF LINE N35 W020 – N45 W040 SW OF LINE N48 W020 – N43 E010 AND NE OF LINE N43 W020 – N38 E010
WI N20 W090 – N05 W090 – N10 W100 – N20 W100 – N20 W090
APRX 50KM WID LINE BTN N64 W017 – N57 W005 – N55 E010 – N55 E030
ENTIRE FIR
ENTIRE FIR/UIR
ENTIRE CTA
TC CENTRE PSN N2740 W07345
NO VA EXP
—
Repetition of elements (C)
Repetition of elements included in a SIGMET for volcanic ash cloud or tropical cyclone
[AND]
—
AND
—
OR
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]
CNL AIRMET [n][n]n
nnnnnn/nnnnnn
CNL SIGMET B04 101200/101600
CNL SIGMET I07 251030/251430 VA MOV TO YUDO FIR
CNL AIRMET 05 151520/151800

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Source: https://www.legislation.gov.uk/eur/2017/373/annex/V/appendix/5A (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-373/annex-V/appendix-5A
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.