WSAU21 AMMC 121917

YMMM SIGMET A03 VALID 122030/130030 YMMC-

YMMM MELBOURNE FIR SEV TURB FCST WI S5000 E08200 - S3200 E09430 -

S3530 E09700 - S5000 E09230 FL120/340 MOV E 30KT NC=