International Sigmet / Convective Sigmet
Issued by NWS
Issued by NWS
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006 WSUS33 KKCI 171755 SIGW MKCW WST 171755 CONVECTIVE SIGMET 16W VALID UNTIL 1955Z MT WY ID FROM 20NW LWT-20SE BOY-30SSE JAC-30WSW HLN-20NW LWT DVLPG AREA TS MOV FROM 28020KT. TOPS TO FL400. OUTLOOK VALID 171955-172355 TS ARE NOT EXPD TO REQUIRE WST ISSUANCES.