WSHO31 MHTG 060840 MHTG SIGMET H3 VALID 060830/061230 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 0820Z WI N0903 W09915 - N0851 W09259 - N1106 W08720 - N0917 W08249 - N0217 W08557 - N0127 W09153 - N0636 W09922 TOP FL520 MOV W 05KT NC=