****0000000173**** WSMC31 GMMC 281720 GMMM SIGMET M02 VALID 282000/282400 GMMC- GMMM CASABLANCA FIR SEV MTW FCST E OF LINE N3550 W00300 - N3345 W00355 - N3211 W00156 FL030/150 STNR WKN=