702
FXCA20 KWBC 211252
PMDCA
TROPICAL DISCUSSION - INTERNATIONAL DESKS
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
852 AM EDT MON AUG 21 2023
PRELIMINARY DISCUSSION FOR PUERTO RICO AND THE USVI AUG 21/12UTC:
THE MAIN STORY OF THE DAY IS TROPICAL STORM FRANKLIN AND ITS
RAINFALL IMPACT OVER PR/USVI. THE NATIONAL HURRICANE CENTER IS
FORECASTING THE CENTER OF TS FRANKLIN TO PASS OVER 200 MILES TO
THE SOUTH AND WEST OF PR OVER THE NEXT FEW DAYS. HOWEVER...DEEP
MOISTURE AND BANDS OF SHOWERS WILL AFFECT PR/USVI TODAY INTO VERY
EARLY WEDNESDAY. THE RAINFALL FORECAST INDICATES RAINFALL TOTALS
BETWEEN 2-4 INCHES ACROSS SOUTH AND EASTERN PR WITH ISOLATED
HIGHER AMOUNTS...WHILE OTHER PORTIONS OF CENTRAL TO NORTHERN PR
AND THE USVI COULD OBSERVE 1-2 INCHES. AS FRANKLIN CONTINUES TO
TRACK WESTWARD AND THEN NORTH OVER HISPANIOLA...THE AVAILABLE
MOISTURE OVER PR/USVI WILL REMAIN ABOVE NORMAL...WITH PRECIPITABLE
WATER RANGING BETWEEN 2.1 AND 2.4 INCHES OR SO. THE WINDS WILL
BECOME LIGHT AND SOUTHEASTERLY...DEPENDING ON THE EVENTUAL TRACK
OF FRANKLIN AS IT MOVES INTO THE ATLANTIC NORTH OF HISPANIOLA.
THIS WOULD CAUSE RAINFALL DEVELOPMENT ON WEDNESDAY INTO THE END OF
THE WORKWEEK OVER SOUTHERN AND EASTERN PR...WITH A FEW SHOWERS
AFFECTING ELSEWHERE IN PR AND THE USVI. THAT BEING SAID...THE
EXPECTED RAINFALL FROM WEDNESDAY ONWARD IS SIGNIFICANTLY LESS THAN
WHAT IS EXPECTED TODAY INTO TUESDAY.
AS MENTIONED ABOVE...WHILE THE RAINIEST DAY IS EXPECTED TO BE
TODAY...THE RAINFALL TOTAL FROM TODAY INTO VERY EARLY WEDNESDAY IS
EXPECTED TO BE BETWEEN 2-4 INCHES ACROSS SOUTHERN AND EASTERN
PR...WITH ISOLATED HIGHER AMOUNTS...WHILE OTHER AREAS OF CENTRAL
TO NORTHERN PR AND THE USVI WOULD EXPECT 1-2 INCHES. THE 5-DAY
TOTAL RAINFALL FORECAST...THAT IS FROM TODAY UNTIL EARLY SATURDAY
MORNING...IS AROUND 4 TO 4.5 INCHES OF RAIN...WITH ISOLATED HIGHER
AMOUNTS FOR SOUTH AND EAST PR...AROUND 2 INCHES FROM EAST CENTRAL
TO WESTERN PR...AND JUST OVER 1 INCH OVER NORTH CENTRAL PR. THE
USVI IS FORECAST TO OBSERVE BETWEEN 1.5 TO 2.5 INCHES OVER THE
NEXT 5 DAYS.
ALAMO/ACOSTA/GALVEZ...WPC (USA)
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