WSMX31 MMMX 250453
MMEX SIGMET K1 VALID 250452/250852 MMMX-
MMFR MEXICO FIR EMBD TS OBS
 AT 0452Z
WI N1907W09316 N1902W09204 N1830W09219 N1759W09336 N1907W09316 CB TOP
         FL400
MOV W 06KT INTSF.
=