328
FXCA20 KWBC 231309
PMDCA
TROPICAL DISCUSSION - INTERNATIONAL DESKS
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
809 AM EST FRI DEC 23 2022
..NEXT TUESDAY DECEMBER 27
PRELIMINARY DISCUSSION FOR PUERTO RICO AND THE USVI FROM DEC
23/12UTC: A MID-LEVEL RIDGE CENTERS OVER HAITI ON FRIDAY
MORNING...AND EXTENDS ACROSS THE ENTIRE CARIBBEAN BASIN. THIS IS
FAVORING FAIR WEATHER ACROSS THE NORTHEAST CARIBBEAN...WHICH IS
EVIDENCED BY LITTLE CLOUDINESS IN SATELLITE IMAGERY. TRADE WINDS
ARE STRAIGHT FROM THE EAST...AT SPEEDS NEARING 15KT.
MODELS SHOW THE RIDGE MEANDERING NORTHWESTWARD FROM HAITI ON
FRIDAY TO THEN REINFORCE A MID-LEVEL RIDGE IN THE NORTH ATLANTIC
THAT CENTERS NEAR 27N 52W. THIS WILL MAINTAIN A RIDGE AXIS OVER
THE NORTHEAST CARIBBEAN THROUGH THE FORECAST CYCLE...WHICH WILL
CONTINUE TO LIMIT AFTERNOON ACTIVITY IN THE CORDILLERA AND ALLOW
FOR LIGHT MORNING SHOWERS IN EASTERN PUERTO RICO ON A DAILY BASIS
DUE TO TRADE WIND CONVERGENCE. MODELS HAVE BEEN CONSISTENT IN
SHOWING THE DEVELOPMENT OF A TRADE WIND SURGE IN THE CENTRAL NORTH
ATLANTIC...WHICH WILL BRING A BOUNDARY/ARC OF ENHANCED TRADE WIND
CONVECTION INTO THE NORTHEAST CARIBBEAN LATE ON TUESDAY. THIS WILL
HIGHLIGHT TRADE WIND CONVECTION ON TUESDAY EVENING INTO WEDNESDAY
MORNING ACROSS THE VI AND PUERTO RICO. GIVEN THE STABILIZING
INFLUENCE OF THE RIDGE...THE LARGEST AMOUNTS ARE EXPECTED TO
CLUSTER ACROSS THE VI AND EASTERN PUERTO RICO MOSTLY FROM LATE
TUESDAY INTO WEDNESDAY MORNING...TO ACCUMULATE SCATTERED
MEASUREMENTS OF 0.4-0.6 INCHES IN EASTERN PUERTO RICO AND 0.3-0.4
INCHES IN THE VI.
GALVEZ...WPC (USA)
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