****0000000173**** WSMC31 GMMC 310220 GMMM SIGMET U01 VALID 310240/310640 GMMC- GMMM CASABLANCA FIR SEV TURB FCST N OF LINE N3550 W00530 - N3525 W00535 - N3550 W00645 SFC/FL050 STNR NC=