386 WSUS33 KKCI 051555 SIGW MKCW WST 051555 CONVECTIVE SIGMET 48W VALID UNTIL 1755Z MT FROM 50SE YQL-40NE HVR-40NE LWT-30N HLN-50NW GTF-50SE YQL AREA TS MOV LTL. TOPS TO FL390. OUTLOOK VALID 051755-052155 FROM 70WSW YXC-40NNW GGW-30S DBL-60N HVE-50SSE BKE-70WSW YXC WST ISSUANCES POSS. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.