WSHO31 MHTG 042330 MHTG SIGMET B7 VALID 042330/050330 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 2320Z WI N0521 W09129 - N0742 W08929 - N0703 W08305 - N0342 W08313 TOP FL520 MOV W 03KT NC=