WSUS33 KKCI 041555 SIGW MKCW WST 041555 CONVECTIVE SIGMET 55W VALID UNTIL 1755Z NM FROM 50WNW CME-30ENE CME-60NNE ELP-50WNW CME AREA EMBD TS MOV LTL. TOPS TO FL300. CONVECTIVE SIGMET 56W VALID UNTIL 1755Z AZ UT NV CA FROM ILC-20N BCE-50NNW PGS-30S EED-60N HEC-ILC AREA EMBD TS MOV LTL. TOPS TO FL330. OUTLOOK VALID 041755-042155 FROM 40NNW BVL-40NW ALS-30SSE CME-70NW MRF-SJN-30W BZA-40SSE OAL-40NNW BVL WST ISSUANCES POSS. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.