International Sigmet / Convective Sigmet
Issued by NWS
Issued by NWS
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562 WSUS33 KKCI 170955 SIGW MKCW WST 170955 CONVECTIVE SIGMET 15W VALID UNTIL 1155Z WY FROM 60NW BOY-40NNE BOY-20WSW BOY-40E JAC-60NW BOY AREA TS MOV FROM 28020KT. TOPS TO FL420. OUTLOOK VALID 171155-171555 TS ARE NOT EXPD TO REQUIRE WST ISSUANCES.