** WTCA31 MHTG 082000Z *** MHTG SIGMET 2 VALID 082000/090200 MHTG- CENTROAMERICA FIR ACT AREA TS OBS SATELLITE IMAGINARY BTN 21.0N 85.0W 20.0N 82.0W 17.0N 88.4W 17.0N 83.5W FRQ TS CB TPS FL 450 MUG NW NC= DUPE