738
FXCA20 KWBC 091240
PMDCA
TROPICAL DISCUSSION - INTERNATIONAL DESKS
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
840 AM EDT FRI JUN 09 2023
PRELIMINARY DISCUSSION FOR PUERTO RICO AND THE USVI FROM JUN
09/12UTC: NEAR NORMAL MOISTURE IS EXPECTED THROUGH SATURDAY...BUT
WILL DECREASE ON SUNDAY INTO MONDAY. A TROPICAL WAVE WILL APPROACH
THE ISLANDS ON TUESDAY...WHICH WILL CAUSE MOISTURE TO QUICKLY
INCREASE...POSSIBLY TO ABOVE NORMAL LEVELS. THE GENERAL RAINFALL
PATTERN WILL BE GENERALLY BRIEF SHOWERS AFFECTING EASTERN PR AND
THE USVI...WHILE AFTERNOON CONVECTION WILL CAUSE SHOWERS ACROSS
NORTHWESTERN PR. SINCE MOISTURE WILL INCREASE SO MUCH ON
TUESDAY...IT IS EXPECTED FOR THE HIGHER AMOUNTS OF RAIN TO OCCUR
ON TUESDAY INTO WEDNESDAY.
A SURFACE HIGH PRESSURE OVER THE CENTRAL ATLANTIC WILL KEEP A
SOUTHEASTERLY WIND FLOW OVER PR/USVI THROUGH SATURDAY. WINDS ARE
EXPECTED TO SHIFT TO AN EASTERLY DIRECTION ON SUNDAY. AN UPPER
LEVEL HIGH PRESSURE WILL PREVAIL OVER THE LOCAL AREA FOR THE NEXT
SEVERAL DAYS...BUT AN UPPER TROUGH COULD APPROACH THE LOCAL
ISLANDS BY TUESDAY INTO WEDNESDAY. A WEAK TRADE WIND INVERSION AT
AROUND THE 850MB LEVEL IS FORECAST OVER THE NORTHEAST CARIBBEAN
THROUGH THE WEEKEND...THEN THE INVERSION WILL STRENGTHEN ON
WEDNESDAY...BUT NO TRADE WIND INVERSION IS EXPECTED ON TUESDAY
INTO WEDNESDAY...WITH THE ARRIVAL OF THE TROPICAL WAVE.
OVERALL...THE NEAR NORMAL MOISTURE WILL CAUSE A FAIRLY TYPICAL
RAINFALL PATTERN WITH SOUTHEASTERLY WIND FLOW TODAY AND SATURDAY.
SCATTERED SHOWERS IN THE MORNING ACROSS EASTERN AND SOUTHERN PR AS
WELL AS THE USVI...THEN AFTERNOON CONVECTION ACROSS NORTHWESTERN
PR. BELOW NORMAL MOISTURE AND THE STABLE ATMOSPHERE WILL LIMIT
SIGNIFICANT SHOWER ACTIVITY LATE IN THE WEEKEND INTO MONDAY...BUT
THE INCREASE IN MOISTURE ON TUESDAY INTO WEDNESDAY...COMBINED WITH
THE UPPER TROUGH APPROACHING FROM THE WEST MAY LEAD TO HIGHER
RAINFALL AMOUNTS. THE 5-DAY RAINFALL TOTALS ARE FORECAST TO HAVE A
MAX AMOUNT OF AROUND 2.5 TO 3 INCHES ACROSS EASTERN PUERTO
RICO...AROUND AN INCH OVER NORTHWESTERN PUERTO RICO...AND BETWEEN
0.50 AND 0.75 INCHES FOR THE USVI.
ALAMO/ACOSTA...WPC (USA)
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page