WSAU21 AMMC 160627 YMMM SIGMET E02 VALID 160700/161100 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S4500 E07540 - S3920 E07550 - S5000 E08510 - S5000 E07910 FL180/320 MOV E 20KT NC=