WSHO31 MHTG 221603 MHTG SIGMET F4 VALID 221603/222003 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 1600Z WI N0744 W09044 -N0506 W09416 -N0529 W09752 -N0735 W10053 -N1035 W09609 -N1028 W09249 TOP FL480 MOV SW 05KT NC=