WSAU21 AMMC 100208 YMMM SIGMET U02 VALID 100230/100630 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S3500 E08100 - S4000 E08600 - S4100 E08200 - S3700 E08000 - S3430 E07500 - S3230 E07500 FL240/360 MOV NNE 15KT NC=