WCMX31 MMMD 262106
MMID SIGMET 4 VALID 262056/270256 MMMX-
MMFO MAZATLAN OCEANICA FIR TC SONIA OBS
N1348 W11948 AT 2056Z
OCNL TS TOP FL430 WI 100NM OF CENTRE
MOV WNW 03KT  .
FCST AT 270300 N1354 W12000 =