{ "url": "https://openlegislation.uk/eu-regulation-2017-373/annex-V/appendix-5A", "json_url": "https://openlegislation.uk/eu-regulation-2017-373/annex-V/appendix-5A.json", "legislation": "eur/2017/373", "legislation_title": "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)", "legislation_url": "https://openlegislation.uk/eu-regulation-2017-373", "path": "annex/V/appendix/5A", "kind": "appendix", "number": "5A", "heading": "Template for SIGMET and AIRMET", "text": "Key:\nM inclusion mandatory;\nC inclusion conditional, whenever applicable; and\n= a double line indicates that the text following it shall be placed on the subsequent line.\nNote:\nthe ranges and resolutions for the numerical elements included in SIGMET/AIRMET are shown in Appendix 8.\nOnly for SIGMET for tropical cyclones.\nOnly for SIGMET for volcanic ash.\nTo be used for two volcanic ash clouds or two centres of tropical cyclones simultaneously affecting the FIR concerned.\nThe number of coordinates shall be kept to a minimum and shall not normally exceed seven.\nThe elements ‘ forecast time ’ and ‘ forecast position ’ are not to be used in conjunction with the element ‘ movement or expected movement ’ .\nNote: 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.\nElement\nDetailed content\nSIGMET template\nAIRMET template\nSIGMET Examples\nAIRMET Examples\nLocation indicator of FIR/CTA (M)\nICAO location indicator of the ATS unit serving the FIR or CTA to which the SIGMET/AIRMET refers\nnnnn\nYUCC\nYUDD\nIdentification (M)\nSIGMET or AIRMET identification and sequence number\nSIGMET nnn\nAIRMET [n][n]n\nSIGMET U05\nSIGMET I12\nAIRMET 2\nAIRMET 19\nAIRMET B19\nValidity period (M)\nDay-time groups indicating the period of validity in UTC\nVALID nnnnnn/nnnnnn\nVALID 010000/010400\nVALID 221215/221600\nVALID 101520/101800\nVALID 251600/252200\nVALID 152000/160000\nVALID 192300/200300\nLocation indicator of MWO (M)\nLocation indicator of MWO originating the SIGMET or AIRMET with a separating hyphen\nnnnn–\nYUDO–\nYUSO–\nName of the FIR/CTA (M)\nLocation indicator and name of the FIR/CTA for which the SIGMET/AIRMET is issued\nnnnn nnnnnnnnnn FIR[/UIR] or nnnn nnnnnnnnnn CTA\nnnnn nnnnnnnnnn\nFIR[/n]\nYUCC AMSWELL FIR\nYUDD SHANLON FIR/UIR\nYUDD SHANLON CTA\nYUCC AMSWELL FIR/2\nYUDD SHANLON FIR\nIF THE SIGMET IS TO BE CANCELLED, SEE DETAILS AT THE END OF THE TEMPLATE\nPhenomenon (M)\nDescription of the phenomenon causing the issuance of SIGMET/AIRMET\nOBSC TS[GR]\nEMBD TS[GR]\nFRQ TS[GR]\nSQL TS[GR]\nSFC WIND nnn/nn[n]MPS\n(or SFC WIND nnn/nn[n]KT)\nOBSC TS\nOBSC TSGR\nEMBD TS\nEMBD TSGR\nFRQ TS\nFRQ TSGR\nSQL TS\nSQL TSGR\nTC GLORIA PSN N10 W060 CB\nTC NN PSN S2030\nE06030 CB\nSEV TURB\nSEV ICE\nSEV ICE (FZRA)\nSEV MTW\nHVY DS\nHVY SS\nVA ERUPTION MT\nASHVAL PSN S15 E073\nVA CLD\nRDOACT CLD\nSFC WIND 040/40MPS\nSFC WIND 310/20KT\nSFC VIS 1500M (BR)\nISOL TS\nISOL TSGR\nOCNL TS\nOCNL TSGR\nMT OBSC\nBKN CLD 120/900M\nBKN CLD 400/3000FT\nBKN CLD SFC/3000M\nBKN CLD SFC/ABV10000FT\nOVC CLD 270/ABV3000M OVC CLD 900/ABV10000FT\nOVC CLD SFC/3000M\nOVC CLD SFC/ABV10000FT\nISOL CB\nOCNL CB\nFRQ CB\nISOL TCU\nOCNL TCU\nFRQ TCU\nMOD TURB\nMOD ICE\nMOD MTW\nTC 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\nSEV TURB\nSEV ICE\nSEV ICE (FZRA)\nSEV MTW\nHVY DS\nHVY SS\n[VA ERUPTION]\n[MT nnnnnnnnnn]\n[PSN Nnn[nn] or Snn[nn] Ennn[nn] or Wnnn[nn]]\nVA CLD\nRDOACT CLD\nSFC VIS nnnnM (nn)\nISOL TS[GR]\nOCNL TS[GR]\nMT OBSC\nBKN CLD\nnnn/[ABV]nnnnM\n(or BKN CLD nnn/[ABV][n]nnnnFT) or BKN CLD SFC/[ABV]nnnnM\n(or BKN CLD SFC/[ABV][n]nnnnFT)\nOVC CLD nnn/[ABV]nnnnM\n(or OVC CLD nnn/[ABV][n]nnnnFT) or OVC CLD SFC/[ABV]nnnnM\n(or OVC CLD SFC/[ABV][n]nnnnFT)\nISOL CB\nOCNL CB\nFRQ CB\nISOL TCU\nOCNL TCU\nFRQ TCU\nMOD TURB\nMOD ICE\nMOD MTW\nObserved or forecast phenomenon (M)\nIndication whether the information is observed and expected to continue, or forecast\nOBS [AT nnnnZ] or\nFCST [AT nnnnZ]\nOBS\nOBS AT 1210Z\nFCST\nFCST AT 1815Z\nLocation (C)\nLocation (referring to latitude and longitude (in degrees and minutes))\nNnn[nn] Wnnn[nn] or\nNnn[nn] Ennn[nn] or\nSnn[nn] Wnnn[nn] or\nSnn[nn] Ennn[nn]\nor\nN OF Nnn[nn] or\nS OF Nnn[nn] or\nN OF Snn[nn] or\nS OF Snn[nn] or\n[AND]\nW OF Wnnn[nn] or\nE OF Wnnn[nn] or\nW OF Ennn[nn] or\nE OF Ennn[nn]\nor\nN OF Nnn[nn] or N OF Snn[nn] AND S OF Nnn[nn] or S OF Snn[nn]\nor\nW OF Wnnn[nn] or W OF Ennn[nn] AND\nE OF Wnnn[nn] or E OF Ennn[nn]\nor\nN 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]]]\nor\nWI 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]]\nor\nAPRX 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]]\nor\nENTIRE FIR/UIR\nor\nENTIRE CTA\nor\nWI nnnKM (or nnnNM) OF TC CENTRE\nN2020 W07005\nN48 E010\nS60 W160\nS0530 E16530\nN OF N50\nS OF N5430\nN OF S10\nS OF S4530\nW OF W155\nE OF W45\nW OF E15540\nE OF E09015\nN OF N1515 AND W OF E13530\nS OF N45 AND N OF N40\nN OF LINE S2520 W11510 – S2520 W12010\nSW OF LINE N50 W005 – N60 W020\nSW OF LINE N50 W020 – N45 E010 AND NE OF LINE N45 W020 – N40 E010\nWI N6030 E02550 – N6055 E02500 –\nN6050 E02630 – N6030 E02550\nAPRX 50KM WID LINE BTN N64 W017 – N60 W010 – N57 E010\nENTIRE FIR\nENTIRE FIR/UIR\nENTIRE CTA\nWI 400KM OF TC CENTRE\nWI 250NM OF TC CENTRE\nLevel (C)\nFlight level or altitude\n[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)\nor\nTOP [ABV or BLW] FLnnn\nFL180\nSFC/FL070\nSFC/3000M\nSFC/10000FT\nFL050/080\nTOP FL390\nABV FL250\nTOP ABV FL100\n3000M\n2000/3000M\n8000FT\n6000/12000FT\n2000M/FL150\n10000FT/FL250\nTOP FL500\nTOP ABV FL500\nTOP BLW FL450\nMovement or expected movement (C)\nMovement or expected movement (direction and speed) with reference to one of the 16 points of compass, or stationary\nMOV 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\nSTNR\nMOV SE\nMOV NNW\nMOV E 40KMH\nMOV E 20KT\nMOV WSW 20KT\nSTNR\nChanges in intensity (C)\nExpected changes in intensity\nINTSF or WKN or NC\nINTSF\nWKN\nNC\nForecast time (C)\nIndication of the forecast time of phenomenon\nFCST AT nnnnZ\n—\nFCST AT 2200Z\n—\nForecast position (C)\nForecast 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\nNnn[nn] Wnnn[nn] or\nNnn[nn] Ennn[nn] or\nSnn[nn] Wnnn[nn] or\nSnn[nn] Ennn[nn]\nor\nN OF Nnn[nn] or\nS OF Nnn[nn] or\nN OF Snn[nn] or\nS OF Snn[nn]\n[AND]\nW OF Wnnn[nn] or\nE OF Wnnn[nn] or\nW OF Ennn[nn] or\nE OF Ennn[nn]\nor\nN OF Nnn[nn] or\nN OF Snn[nn]\nAND S OF Nnn[nn] or\nS OF Snn[nn]\nor\nW OF Wnnn[nn] or\nW OF Ennn[nn]\nAND E OF Wnnn[nn] or\nE OF Ennn[nn]\nor\nN OF LINE or\nNE OF LINE or\nE OF LINE or\nSE OF LINE or\nS OF LINE or\nSW OF LINE or\nW OF LINE or\nNW OF LINE Nnn[nn]\nor\nSnn[nn] Wnnn[nn] or\nEnnn[nn] – Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] [– Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn]]\n[AND N OF LINE or\nNE OF LINE or\nE OF LINE or\nSE OF LINE or\nS OF LINE or\nSW OF LINE or\nW OF LINE or\nNW OF LINE Nnn[nn]\nor\nSnn[nn] Wnnn[nn] or\nEnnn[nn] – Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] [– Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn]]]\nor\nWI Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] – Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] – Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] – Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn]\nor\nAPRX nnKM WID LINE BTN (nnNM WID LINE BTN)\nNnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] – Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn] [– Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn]][– Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn]]\nor\nENTIRE FIR[/UIR]\nor\nENTIRE CTA\nor\nTC CENTRE PSN Nnn[nn] or\nSnn[nn] Wnnn[nn] or\nEnnn[nn]\nor\nNO VA EXP\n—\nN30 W170\nN OF N30\nS OF S50 AND W OF\nE170\nS OF N46 AND N OF N39\nNE OF LINE N35 W020 – N45 W040 SW OF LINE N48 W020 – N43 E010 AND NE OF LINE N43 W020 – N38 E010\nWI N20 W090 – N05 W090 – N10 W100 – N20 W100 – N20 W090\nAPRX 50KM WID LINE BTN N64 W017 – N57 W005 – N55 E010 – N55 E030\nENTIRE FIR\nENTIRE FIR/UIR\nENTIRE CTA\nTC CENTRE PSN N2740 W07345\nNO VA EXP\n—\nRepetition of elements (C)\nRepetition of elements included in a SIGMET for volcanic ash cloud or tropical cyclone\n[AND]\n—\nAND\n—\nOR\nCancellation of SIGMET/AIRMET (C)\nCancellation of SIGMET/AIRMET referring to its identification\nCNL SIGMET nnn nnnnnn/nnnnnn\nor\nCNL SIGMET nnn nnnnnn/nnnnnn\n[VA MOV TO nnnn FIR]\nCNL AIRMET [n][n]n\nnnnnnn/nnnnnn\nCNL SIGMET B04 101200/101600\nCNL SIGMET I07 251030/251430 VA MOV TO YUDO FIR\nCNL AIRMET 05 151520/151800", "extent": "E+W+S+N.I.", "status": null, "version": "current", "annotations": [ { "type": "F", "label": "F1", "text": "Inserted by Commission Implementing Regulation (EU) 2020/469 of 14 February 2020 amending Regulation (EU) No 923/2012, Regulation (EU) No 139/2014 and Regulation (EU) 2017/373 as regards requirements for air traffic management/air navigation services, design of airspace structures and data quality, runway safety and repealing Regulation (EC) No 73/2010 (Text with EEA relevance)." }, { "type": "footnote", "label": "f1", "text": "The number of coordinates shall be kept to a minimum and shall not normally exceed seven." }, { "type": "footnote", "label": "f2", "text": "Only for SIGMET for tropical cyclones." }, { "type": "footnote", "label": "f3", "text": "The elements ‘ forecast time ’ and ‘ forecast position ’ are not to be used in conjunction with the element ‘ movement or expected movement ’ ." }, { "type": "footnote", "label": "f4", "text": "Only for SIGMET for volcanic ash." }, { "type": "footnote", "label": "f5", "text": "To be used for two volcanic ash clouds or two centres of tropical cyclones simultaneously affecting the FIR concerned." } ], "outstanding_effects": [], "provenance": { "source": "legislation.gov.uk", "source_url": "https://www.legislation.gov.uk/eur/2017/373/annex/V/appendix/5A", "retrieved_at": "2026-11-01T14:45:09.531464+00:00" }, "licence": "Open Government Licence v3.0", "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/", "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives." }