WSUS1 KBOS 242338 BOSN WS 242345 SIGMET NOVEMBER 2 VALID UNTIL 250345 OH IN IL LM MI LH FROM 30N ECK TO 40SSE ECK TO 30NNE IND TO 10NNW DEC TO 30ENE MKG TO 30N ECK AREA ISOL SEV TS. TOPS TO FL420. MOVG EWD 40KT. INTSF. BASED ON STLT AND RADAR OBS. REF WW927. AFWA ....=