WSUS31 KKCI 171455 SIGE MKCE WST 171455 CONVECTIVE SIGMET...NONE OUTLOOK VALID 171655-172055 FROM 130SE BGR-150ESE ACK-30S JFK-40W BDL-130SE BGR WST ISSUANCES POSS. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.