WSAU21 AMMC 160825 YMMM SIGMET F02 VALID 160925/161325 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S2520 E08240 - S2810 E10430 - S3230 E10510 - S3340 E08730 FL250/350 STNR NC=