****0000000173**** WSMC31 GMMC 241516 GMMM SIGMET M03 VALID 241525/241925 GMMC- GMMM CASABLANCA FIR SEV MTW FCST E OF LINE N3215 W00116 - N3305 W00540 - N3510 W00405 SFC/FL180 STNR WKN=