WSAU21 AMMC 081228

YMMM SIGMET A08 VALID 081245/081645 YMMC-

YMMM MELBOURNE FIR SEV TURB FCST WI S4130 E07750 - S3930 E08650 -

S2800 E09830 - S2930 E09950 - S4320 E08820 - S4350 E07730 FL200/380

MOV E 15KT INTSF=