514
FXCA20 KWBC 241250
PMDCA
TROPICAL DISCUSSION - INTERNATIONAL DESKS
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
849 AM EDT FRI MAR 24 2023
PRELIMINARY DISCUSSION FOR PUERTO RICO AND THE USVI FROM MAR
24/12UTC: GENERALLY TRADE WIND SHOWERS ARE EXPECTED FOR PR/USVI
FOR THE NEXT 5 DAYS. SOME AFTERNOON CONVECTION COULD BE EXPECTED
ACROSS WESTERN PR BUT THE RAINFALL AMOUNTS FROM THAT WOULD BE
MODEST...IN GENERAL LESS THAN A QUARTER OF AN INCH OF RAIN. THE
AVAILABLE MOISTURE WILL BE NEAR TO BELOW NORMAL OVER THE NEXT FEW
DAYS...FLUCTUATING UP AND DOWN BETWEEN 0.8 AND 1.3
INCHES...SATURDAY HAVING THE HIGHEST MOISTURE. THIS PUTS SATURDAY
AS THE DAY WITH THE HIGHEST RAINFALL ACCUMULATIONS IN THE 5-DAY
FORECAST...WITH THE LUQUILLO MOUNTAIN RANGE HAVING OVER A QUARTER
OF AN INCH OF RAIN IN THE FORECAST. A SURFACE HIGH PRESSURE WILL
GRADUALLY DEVELOP OVER THE SOUTHWESTERN ATLANTIC...KEEPING AN EAST
TO NORTHEAST WIND FLOW PATTERN. IN THE MID LEVELS...A HIGH
PRESSURE WILL CONTINUE TO MOVE EAST ACROSS THE NORTHERN GULF OF
MEXICO INTO THE SOUTHWESTERN ATLANTIC...WHICH WILL KEEP A STABLE
ATMOSPHERE OVER THE LOCAL AREA. A TRADE WIND INVERSION AT AROUND
THE 900-700MB LEVEL OR SO COULD COULD PERSIST FOR MOST OF THE
FORECAST PERIOD...THOUGH WEAKENING OCCASIONALLY.
THE RAINFALL EXPECTED TODAY WOULD BE OF AROUND 0.10 INCHES OR LESS
ACROSS NORTHEASTERN AND SOUTHWESTERN PR...GENERALLY FAIR WEATHER
ELSEWHERE. FOR SATURDAY...THE INCREASE IN MOISTURE COULD CAUSE UP
TO 0.25 INCHES OR SO OF RAIN ACROSS NORTHEASTERN PR. FOR SUNDAY
ONWARD...JUST OVER A TENTH OF AN INCH OF RAIN OR LESS IS FORECAST
ACROSS THE NORTHEASTERN SECTIONS OF PR AND ACROSS ISOLATED AREAS
OF WESTERN PR DUE TO ANY SHALLOW AFTERNOON CONVECTION. ACROSS THE
USVI...LITTLE TO NO RAIN IS EXPECTED...WITH ONLY QUICK SHOWERS
EXPECTED AT MOST...POSSIBLY LEAVING A FEW HUNDREDTHS OF AN INCH OF
RAIN.
ALAMO...WPC (USA)
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