Prognostic Meteorological Discussion
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FXCA20 KWBC 261037
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TROPICAL DISCUSSION - INTERNATIONAL DESKS
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
636 AM EDT TUE JUL 26 2016

PRELIMINARY DISCUSSION FOR PUERTO RICO AND THE USVI FROM JULY
26/06 UTC: TROPICAL WAVE TAKES A BEELINE ACROSS THE FORECAST AREA
EARLY THIS MORNING. ON ITS WAKE A STRONG CAP INVERSION IS FORECAST
TO ESTABLISH...TRAPPING MOISTURE TO ATMOSPHERE BELOW 750 HPA. THIS
WILL BE ACCOMPANIED BY DRY AND DUSTY CONDITIONS AS A SAHARAN AIR
LAYER SPREADS ACROSS THE TROPICAL ATLANTIC INTO THE EASTERN
CARIBBEAN. BRISK EASTERLY TRADES...HOWEVER...ARE LIKELY TO TRIGGER
STREAMERS THAT ARE TO AFFECT THE VIRGIN ISLES AND EASTERN PUERTO
RICO...WHILE LATE AFTERNOON CONVECTION CONFINES TO WESTERN
PORTIONS OF PUERTO RICO.

THIS PATTERN HOLDS THROUGH THURSDAY WHEN A TUTT IS TO RETROGRESS
ACROSS THE FORECAST AREA. IN RESPONSE...THE MID LEVEL CAP
INVERSION IS TO BRIEFLY RELAX ITS FOOTHOLD ACROSS THE NORTHEAST
CARIBBEAN ISLES. ENVIRONMENTAL CONDITIONS ARE TO THEN BECOME
SOMEWHAT MORE FAVORABLE FOR CONVECTION TO DEVELOP...SO EXPECTING
AN INCREASE IN DAYTIME CONVECTION ALONG THE CORDILLERA/INTERIOR
PORTIONS OF PUERTO RICO AND POSSIBLY SAINT CROIX.


CABANERIT...INAMEH (VENEZUELA)
CONTRERAS...IMN (COSTA RICA)
CASTILLO...UCR (COSTA RICA)
DAVISON...WPC (USA)

















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