WSHO31 MHTG 271955 MHTG SIGMET B1 VALID 271955/272355 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 1940Z WI N1509 W08545 - N1053 W08523 - N1107 W08329 - N1521 W08347 TOP FL500 MOV W 05-10KT INTSF=