WSHO31 MHTG 170155 MHTG SIGMET L1 VALID 170155/170555 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 0145Z WI N1426 W08918 - N1346 W08902 - N1322 W08942 - N1357 W09102 - N1417 W09055 TOP FL520 MOV W 10KT WKN=