WSAU21 AMMC 042019 YMMM SIGMET V01 VALID 042035/050035 YMMC- YMMM MELBOURNE FIR SEV TURB FCST WI S3210 E07500 - S3610 E08630 - S3850 E08240 - S4440 E08350 - S4720 E08100 - S3910 E07500 FL250/380 MOV E 30KT NC=