WSAU21 AMMC 100143 YMMM SIGMET E02 VALID 100225/100625 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S3900 E07900 - S3900 E08400 - S4700 E09100 - S4700 E08500 FL180/300 MOV NE 30KT NC=