WSUS33 KKCI 151555 SIGW MKCW WST 151555 CONVECTIVE SIGMET 18W VALID UNTIL 1755Z MT FROM 70NE GGW-10ESE MLS-50S LWT-40NE HVR-70NE GGW AREA EMBD TS MOV FROM 24025KT. TOPS TO FL310. OUTLOOK VALID 151755-152155 FROM 50NNW GGW-BIL-60W BTG-30W HUH-50NNW FCA-50NNW GGW WST ISSUANCES POSS. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.