WSUS31 KKCI 270255 SIGE MKCE WST 270255 CONVECTIVE SIGMET 14E VALID UNTIL 0455Z FL GA AND FL CSTL WTRS FROM 30NE TLH-50E CTY-60WNW PIE-90SW TLH-30NE TLH AREA SEV EMBD TS MOV FROM 18020KT. TOPS ABV FL450. TORNADOES POSS...WIND GUSTS TO 135KT POSS. TS ASSOCD WITH TC HELENE. CONVECTIVE SIGMET 15E VALID UNTIL 0455Z FL CSTL WTRS FROM 50E OMN-100E OMN-140SE MIA-110SSE MIA-50E OMN AREA SEV EMBD TS MOV FROM 18045KT. TOPS ABV FL450. TORNADOES POSS...WIND GUSTS TO 60KT POSS. CONVECTIVE SIGMET 16E VALID UNTIL 0455Z VA NC SC GA TN AND SC CSTL WTRS FROM 30NW LYH-30N ILM-50S CHS-30NNW MCN-20NNE VXV-30NW LYH AREA SEV EMBD TS MOV FROM 15035KT. TOPS TO FL430. TORNADOES POSS...WIND GUSTS TO 60KT POSS. CONVECTIVE SIGMET 17E VALID UNTIL 0455Z FL AND CSTL WTRS FROM 50E CTY-20ENE ORL-40W MIA-60WSW EYW-70W PIE-50E CTY AREA SEV EMBD TS MOV FROM 20055KT. TOPS ABV FL450. TORNADOES...WIND GUSTS TO 60KT POSS. TS ASSOCD WITH TC HELENE. CONVECTIVE SIGMET 18E VALID UNTIL 0455Z NC FL GA TN AL AND FL CSTL WTRS FROM 20NNE VXV-30NE TLH-90SW TLH-20SW LGC-GQO-20NNE VXV AREA SEV EMBD TS MOV FROM 13040KT. TOPS TO FL350. TORNADOES...WIND GUSTS TO 60KT POSS. CONVECTIVE SIGMET 19E VALID UNTIL 0455Z SC FL GA AND CSTL WTRS FROM 30NNW MCN-120SE CHS-140ENE OMN-50E CTY-30NE TLH-30NNW MCN AREA SEV EMBD TS MOV FROM 15055KT. TOPS TO FL450. TORNADOES...WIND GUSTS TO 60KT POSS. TS ASSOCD WITH TC HELENE. CONVECTIVE SIGMET 20E VALID UNTIL 0455Z MA RI CT FROM 30SSE BOS-20SW PVD LINE TS 20 NM WIDE MOV FROM 26030KT. TOPS TO FL310. OUTLOOK VALID 270455-270855 AREA 1...FROM EKN-70NE ILM-110ESE CHS-150E PBI-70E PBI-50ESE EYW-60WSW EYW-60W PIE-40ESE CEW-IIU-EKN REF WW 685 686 687. WST ISSUANCES EXPD. REFER TO MOST RECENT WTNT24 KNHC FROM NATIONAL HURRICANE CENTER FOR DETAILS ON TC HELENE. AREA 2...FROM 150SSE BGR-140ESE ACK-80SSE HTO-40SSE JFK-JFK-30ESE BOS-150SSE BGR WST ISSUANCES POSS. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.