WSSW31 LSSW 301750
LSAS SIGMET M04 VALID 301800/302200 LSZH-
LSAS SWITZERLAND FIR/UIR SEV MTW FCST AT 1800Z WI N4550 E00716 -
N4553 E00655 - N4618 E00637 - N4707 E00920 - N4654 E00928 - N4553
E00805 - N4550 E00716 FL080/320 STNR WKN=