WSAU21 AMMC 152320 YMMM SIGMET N02 VALID 152355/160355 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S5000 E08600 - S5000 E08200 - S4700 E08100 - S4500 E08100 - S4400 E08200 FL200/300 MOV E 40KT NC=