Area Forecast Discussion
Issued by NWS San Juan, PR

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FXCA62 TJSJ 250147
AFDSJU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
947 PM AST FRI APR 24 2015

.UPDATE...ISOLATED TO LOCALLY SCATTERED SHOWERS PERSISTED ACROSS
PARTS OF THE SAN JUAN METROPOLITAN AREA THIS EVENING. THIS
ACTIVITY IS EXPECTED TO CONTINUE FOR THE NEXT COUPLE OF HOURS.
AFTER THAT...CLEAR TO PARTLY CLOUDY SKIES WITH LIMITED SHOWER
ACTIVITY IS EXPECTED ACROSS THE LOCAL ISLANDS. A GENERALLY FAIR
AND STABLE WEATHER PATTERN IS EXPECTED TO CONTINUE ACROSS THE
FORECAST AREA FOR THE NEXT SEVERAL DAYS...AS THE REGION REMAINS
UNDER THE INFLUENCE OF A MID TO UPPER LEVEL RIDGE. HOWEVER...THE
LIMITED AVAILABLE MOISTURE WILL COMBINE EACH AFTERNOON WITH STRONG
DAYTIME HEATING...SEA BREEZE CONVERGENCE AND LOCAL ISLAND EFFECTS
TO INDUCE THE DEVELOPMENT OF ISOLATED TO SCATTERED SHOWERS OVER
NORTHERN HALF OF PUERTO RICO...WITH LIMITED SHOWER ACTIVITY...IF
ANY...ELSEWHERE OVER THE LOCAL ISLANDS. DUE TO THE EAST SOUTHEAST
LOW LEVEL WIND FLOW...HIGHER THAN NORMAL TEMPERATURES ARE EXPECTED
ESPECIALLY OVER NORTHERN COASTAL MUNICIPALITIES OF PUERTO RICO.

&&

.AVIATION...VFR CONDITIONS EXPECTED ACROSS THE LOCAL FLYING AREA
OVERNIGHT AND UNTIL AT LEAST 25/17Z. WINDS WILL BECOME MORE FROM
THE SOUTHEAST ON SATURDAY. AFTER 25/18Z VICINITY SHOWERS ARE
POSSIBLE ACROSS TJSJ AND TJBQ.

&&

.MARINE...SEAS WILL DIMINISH CONSIDERABLY OVERNIGHT THROUGH
SUNDAY AND THEN SLOWLY INCREASE UNTIL THEY REACH 6 FEET THURSDAY
AND FRIDAY OF NEXT WEEK IN THE SOUTHWEST AND NORTHEAST QUADRANTS
OF OUR FORECAST ZONE. WINDS WILL REMAIN WEAKER THAN USUAL IN A
SOUTHEAST FLOW.

&&

.PREV DISCUSSION... /ISSUED 302 PM AST FRI APR 24 2015/

SYNOPSIS...A MID TO UPPER LEVEL RIDGE WILL CONTINUE TO AMPLIFY
ACROSS THE LOCAL AREA...AND HOLD OVER THE NEXT SEVERAL DAYS.
SOUTHERLY WINDS WILL CONTINUE THROUGH AT LEAST MIDWEEK NEXT WEEK.

DISCUSSION...FAIR WEATHER CONDITIONS PREVAILED ACROSS THE LOCAL
ISLANDS TODAY...WITH MOSTLY CLEAR SKIES AND LIMITED SHOWER ACTIVITY.
SOME ISOLATED TO LOCALLY SCATTERED SHOWERS WERE NOTED ACROSS
WESTERN PUERTO RICO...BUT RAINFALL ACCUMULATIONS WERE MINIMAL SO
FAR.

A FAIR AND STABLE WEATHER PATTERN WILL CONTINUE TO PREVAIL ACROSS
THE LOCAL ISLANDS OVER THE NEXT SEVERAL DAYS...UNDER A MID TO
UPPER LEVEL RIDGE AND LIMITED LOW LEVEL MOISTURE. SHOWER ACTIVITY...
IF ANY...WILL BE SHALLOW AND FOCUSED EACH AFTERNOON ACROSS THE
NORTHERN SLOPES OF PUERTO RICO. ABOVE NORMAL TEMPERATURES WILL
PREVAIL ACROSS THE AREA...BUT ESPECIALLY ALONG THE NORTHERN SLOPES
AS A SOUTHERLY WIND FLOW PREVAILS. TEMPS WILL SOAR INTO THE MID
90S. DAILY RECORD HIGHS ARE LIKELY.

AVIATION...SHOWERS IN THE VCNTY OF JBQ THRU 22Z WITH MVFR CIGS AND
AGAIN ON SAT MAINLY AT JBQ. OTHERWISE...VFR CONDITIONS WITH WINDS
BECOMIMG MORE SOUTHEAST.

MARINE...SEAS WILL DIMINISH CONSIDERABLY TONIGHT THROUGH SUNDAY
AND THEN SLOWLY INCREASE UNTIL THEY REACH 6 FEET THURSDAY AND
FRIDAY OF NEXT WEEK IN THE SOUTHWEST AND NORTHEAST QUADRANTS OF
OUR FORECAST ZONE. WINDS WILL REMAIN WEAKER THAN USUAL IN
SOUTHEAST TO SOUTH FLOW.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  76  91  78  91 /   0  20   0   0
STT  77  87  78  86 /  20  20  20  20

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...NONE.
VI...NONE.
AM...NONE.
&&

$$

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