WSUS33 KKCI 182055 SIGW MKCW WST 182055 CONVECTIVE SIGMET 19W VALID UNTIL 2255Z NV CA FROM 90ENE RBL-60NNW OAL-40S OAL-70NNE EHF-40N RBL-90ENE RBL AREA TS MOV FROM 19015KT. TOPS TO FL310. CONVECTIVE SIGMET 20W VALID UNTIL 2255Z NV FROM 60NNW BAM-20N ELY-70W ELY-50W BAM-60NNW BAM AREA TS MOV FROM 19010KT. TOPS TO FL250. OUTLOOK VALID 182255-190255 FROM 50NNW ISN-50WNW RAP-30SSW MLS-70SSW GGW-60NW GGW-50NNW ISN WST ISSUANCES POSS. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.