WSAU21 AMMC 130331 YMMM SIGMET G01 VALID 130331/130731 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S5000 E08050 - S4620 E08500 - S4320 E09250 - S4600 E09400 - S5000 E08640 FL140/300 STNR NC=