GM5 MET.TR.250(a) SIGMET

• ED Decision 2022/004/R found in: ATM/ANS Provision of Services (2017/373) (Mar 2025)

GM5 MET.TR.250(a) SIGMET ED Decision 2022/004/R EXAMPLE OF SIGMET FOR RADIOACTIVE CLOUD <table border="1" cellpadding="0" cellspacing="0" width="100%"><tr><td valign="top" width="100%"><p>YUCC SIGMET RO2 VALID 201200/201600 YUDO — </p><p>YUCC AMSWELL FIR RDOACT CLD OBS AT 1155Z WI 30KM OF N6030 E02550 SFC/FL550 STNR</p><p>Meaning:</p><p>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 0001 UTC; the SIGMET is valid from 12.00 UTC to 16.00 UTC on the 20^th of the month; radioactive cloud was observed at 1155 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.</p><p>* Fictitious locations</p></td></tr></table> GM5 MET.TR.250(a) SIGMET ED Decision 2022/004/R EXAMPLE OF SIGMET FOR RADIOACTIVE CLOUD <table border="1" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="top" width="100%"> <p>YUCC SIGMET RO2 VALID 201200/201600 YUDO — </p> <p>YUCC AMSWELL FIR RDOACT CLD OBS AT 1155Z WI 30KM OF N6030 E02550 SFC/FL550 STNR</p> <p>Meaning:</p> <p>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 0001 UTC; the SIGMET is valid from 12.00 UTC to 16.00 UTC on the 20^th of the month; radioactive cloud was observed at 1155 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.</p> <p>* Fictitious locations</p> </td> </tr> </table>