WSAU21 AMMC 010325 YMMM SIGMET G02 VALID 010430/010830 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S3950 E07500 - S4250 E08040 - S5000 E08110 - S5000 E07500 FL120/270 STNR NC=