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554
FXCA62 TJSJ 201843
AFDSJU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
243 PM AST SAT DEC 20 2014

.SYNOPSIS...A FAIR AND STABLE WEATHER PATTERN WILL CONTINUE TO
PREVAIL ACROSS THE LOCAL ISLANDS DURING THE NEXT SEVERAL DAYS
AS A MID TO UPPER LEVEL RIDGE HOLDS ACROSS THE CARIBBEAN INTO
THE WESTERN TROPICAL ATLANTIC. SURFACE HIGH NORTH OF THE AREA
WILL PROMOTE FRESH NORTHEASTERLY WINDS THROUGH EARLY NEXT WEEK.

&&

.DISCUSSION...MOSTLY SUNNY TO PARTLY CLOUDY SKIES PREVAILED
ACROSS THE LOCAL ISLANDS THROUGH THE DAY...WITH BRIEF PASSING
SHOWERS OBSERVED OVER THE CARIBBEAN WATERS SOUTH OF SAINT CROIX
AND PUERTO RICO. SOME SHOWERS HAVE BEEN DEVELOPING ACROSS PORTIONS
OF SOUTHWEST PUERTO RICO EARLY THIS AFTERNOON...HOWEVER MINIMAL
RAINFALL ACCUMULATIONS OBSERVED SO FAR. WINDS WERE FROM THE
NORTHEAST AT 10 TO 15 MPH...WITH COASTAL TEMPERATURES IN THE
MID 80S.

A FAIR AND STABLE WEATHER PATTERN WILL CONTINUE TO PREVAIL ACROSS
THE LOCAL ISLANDS DURING THE NEXT SEVERAL DAYS UNDER SUBSIDENCE
ALOFT AND BELOW TO NORMAL PRECIPITABLE WATER. ALTHOUGH...SHALLOW
LOW LEVEL MOISTURE EMBEDDED IN THE TRADES WILL RESULT IN ISOLATED
TO LOCALLY SCATTERED PASSING SHOWERS ACROSS WINDWARD AREAS FROM
TIME TO TIME. IN FACT...BEST CHANCE EXPECTED EARLY MONDAY MORNING
AND TUESDAY. AS SUBSIDENCE CAP HOLDS ACROSS THE AREA...AFTERNOON
CONVECTION EACH DAY SHOULD REMAIN LIMITED...IF ANY.

FRESH NORTHEASTERLY TRADES WILL CONTINUE THROUGH SUNDAY BECOMING
MORE EASTERLY EARLY NEXT WORK WEEK. THIS WILL PROMOTE NEAR NORMAL
MAXIMUM TEMPERATURES ACROSS LOCAL ISLANDS.

&&

.AVIATION...VFR CONDITIONS EXPECTED DURING THE NEXT 24 HRS. SHALLOW/
ISOLD SHRA CANNOT BE RULED OUT...BUT NO SIGNIFICANT WEATHER EVENT
ARE EXPECTED AT THE TAF SITES. SOUNDING DATA SHOWED ENE AT 3-17 KT
UP TO 2KFT.

&&

.MARINE...A MODERATE TO FRESH NORTHEASTERLY WIND FLOW WILL PREVAIL
THROUGH SUNDAY...BECOMING MORE EASTERLY MONDAY AND TUESDAY AS
SURFACE HIGH NORTH OF THE AREA MOVES FURTHER NORTH. SEAS BUILDING
SLIGHTLY TONIGHT AND SUNDAY ACROSS THE OFFSHORE ATLANTIC WATERS.
SEAS UP TO 6 FEET.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  74  84  74  84 /  20  30  30  30
STT  76  85  76  85 /  20  30  30  30

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...NONE.
VI...NONE.
COASTAL WATERS...NONE.
&&

$$

27/23






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