WSAU21 AMMC 041855

YMMM SIGMET G03 VALID 042000/050000 YMMC-

YMMM MELBOURNE FIR SEV TURB FCST WI S1910 E08400 - S4630 E07840 -

S4910 E07500 - S1630 E07500 FL270/400 STNR NC=