WSAU21 AMMC 092347

YMMM SIGMET A17 VALID 100045/100445 YMMC-

YMMM MELBOURNE FIR SEV TURB FCST WI S2810 E08040 - S3630 E09540 -

S3340 E10820 - S3700 E10650 - S3940 E10120 - S3930 E09430 - S3300

E08250 FL260/360 MOV E 30KT NC=