WSCA31 MHTG 082300 MHTG SIGMET B1 VALID 082300/090300 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 2250Z WI N1436 W09208 - N1604 W09142 - N1602 W09022 - N1415 W08808 -N1335 W08839 TOP FL500 STNR INTSF=