WSHO31 MHTG 062220 MHTG SIGMET L1 VALID 062220/070220 MHTG- MHCC CENTRAL AMERICAN FIR EMBD TS OBS AT 2200Z WI N1433 W09213 N1513 W09134 N1440 W09055 N1411 W09145 TOP FL520 STNR INTSF=