Area Forecast Discussion
Issued by NWS San Juan, PR

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FXCA62 TJSJ 261916
AFDSJU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
316 PM AST SUN APR 26 2015

.SYNOPSIS...STRONG MID TO UPPER LEVEL RIDGE WILL MAINTAIN IT HOLD
OVER THE FORECAST AREA AND REMAIN THE DOMINANT WEATHER FEATURE AT
LEAST UNTIL THE LATTER PART OF THE UPCOMING WORK WEEK. AT THE SURFACE...
RECEDING HIGH PRESSURE ACROSS THE SUBTROPICAL ATLANTIC WILL
MAINTAIN A LIGHT SOUTHERLY WIND FLOW THROUGH THE EARLY PART OF THE
NEXT WEEK. THIS WILL RESULT IN WARMER THAN NORMAL TEMPERATURES
ACROSS THE REGION DURING THE NEXT FEW DAYS.

&&

.DISCUSSION...LOCAL SEA BREEZE CONVERGENCE IN SOME AREAS ALONG
WITH PERSISTENT SOUTHERLY FLOW ALLOWED FOR A SLIGHT INCREASE IN
CLOUDINESS ACROSS PARTS OF THE ISLANDS TODAY. HOWEVER...NO
SIGNIFICANT RAINFALL WAS OBSERVED OR DETECTED SO FAR BY THE
DOPPLER WEATHER RADAR. THE DOMINANT WARM SOUTHERLY WINDS...AND
STRONG SUBSIDENCE ALOFT QUICKLY SUPPRESSED AND LIMITED ANY
CONVECTIVE DEVELOPMENT. THIS SOUTHERLY FLOW HOWEVER ALLOWED
DAYTIME TEMPERATURES TO INCREASE AN ADDITIONAL DEGREE OR TWO IN
THE AFTERNOON...WITH A NEW RECORD HIGH TEMPERATURE BEING SET AT
THE SAN JUAN INTERNATIONAL AIRPORT. THIS OVERALL HOT AND DRY
WEATHER PATTERN IS EXPECTED TO CONTINUE DURING THE NEXT FEW DAYS.

DURING THE OVERNIGHT HOURS...MOSTLY CLEAR AND TRANQUIL WEATHER
CONDITIONS WITH VERY LITTLE OR NO SHOWER ACTIVITY EXPECTED ACROSS
THE REGION. A BRIEF AND LIGHT SHOWER MAY MOVE INLAND ALONG PORTIONS
OF THE SOUTH AND EAST COASTAL SECTIONS BUT ALL IN ALL SHOWER
ACTIVITY WILL BE LIMITED OVER LAND.

ON MONDAY...MOSTLY SUNNY SKIES EXPECTED ONCE AGAIN WITH WARM DAYTIME
TEMPERATURES AND LIMITED OR NO SHOWER ACTIVITY DURING THE DAY. BASED
ON LATED MODEL GUIDANCE ALL SUGGEST NO SIGNIFICANT RAINFALL OR WEATHER
FEATURE EXPECTED TO AFFECT THE REGION FOR THE NEXT SEVERAL DAYS. MOSTLY
FAIR AND STABLE CONDITIONS SHOULD PERSIST FOR MOST OF THE WORK WEEK.

&&

.AVIATION...VFR CONDITIONS WILL PREVAIL ACROSS THE LOCAL FLYING
AREA FOR THE NEXT 24 HOUR WITH LITTLE TO NO SIGNIFICANT WX EXPECTED.
SFC WINDS WILL BE FROM THE SOUTH SOUTHEAST AT AROUND 10 KNOTS WITH
SEA BREEZE VARIATIONS UNTIL AROUND 26/22Z...BECOMING LIGHT AND
VARIABLE FOR MOST OF THE TERMINALS THEREAFTER. SOUTHEAST WINDS AT
AROUND 10-15KT EXPECTED ACROSS THE LOCAL AREA AFTER 27/12Z.

&&

.MARINE...A GENTLE TO MODERATE SOUTHERLY WIND FLOW OF 15 KNOTS OR
LESS AND SEAS OF 4 FEET OR LESS WILL PERSIST OVERNIGHT AND MONDAY.
PLEASE REFER TO THE LATEST COASTAL WATERS FORECAST ISSUED BY THE
NATIONAL WEATHER SERVICE WFO SAN JUAN FOR ADDITIONAL INFORMATION.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  79  92  78  95 /   0  20   0  20
STT  79  87  79  88 /  10  10  20  20

&&

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

$$

25/09



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