WVCA31 MHTG 121900
SIGMET
MHTG SIGMET 1 VALID 121700/122300 MHTG-
FIR CENTROAMERICA VA (MASAYA NICARAGUA) LOC N1159 W08609
SUMMIT 635M PLUME OBS BY GOES-12 GFS WINDS AT 1245UTC SFC/FL070
N1201 W08618 N1159 W08609 N1158 W08609 N1156 W08617 N1201 W08618
MOV W 10KT NC=