Area Forecast Discussion
Issued by NWS San Juan, PR

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FXCA62 TJSJ 211034
AFDSJU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
634 AM AST SUN DEC 21 2014

.SYNOPSIS...HIGH PRESSURE WILL CONTINUE TO DOMINATE THE LOCAL REGION THROUGH
THE END OF THE FORECAST PERIOD WITH MODERATE TRADE WINDS. MOSTLY FAIR
WEATHER CONDITIONS EXPECTED ACROSS THE FORECAST AREA.

&&

.DISCUSSION...MOSTLY CLEAR SKIES PREVAILED OVER LAND AREAS
OVERNIGHT WITH THE EXCEPTION OF ONE OR TWO BRIEF ISOLATED SHOWERS
OVER EASTERN PUERTO RICO. PASSING SHOWERS WERE NOTED OVER THE
CARIBBEAN WATERS DURING THE NIGHT TIME PERIOD AND ARE EXPECTED TO
CONTINUE THROUGH SUNDAY MORNING. SOME OF THESE SHOWERS CAN BRIEFLY
AFFECT ST. CROIX.

MODEL GUIDANCE CONTINUES TO INDICATE THAT THE BEST DAY FOR
SCATTERED SHOWER ACTIVITY OVER MUCH OF THE LOCAL ISLANDS WILL BE
ON TUESDAY...AS LOW LEVEL EASTERLY WIND SURGE WITH NORMAL PWAT
VALUES ARE EXPECTED. HOWEVER...DRYING IS EXPECTED QUICKLY BY LATE
TUESDAY NIGHT/EARLY WEDNESDAY. SHOWER ACTIVITY WILL REMAIN AT A
MINIMUM ON MOST OF THE DAYS WITH THE EXCEPTION OF BRIEF AND LIGHT PASSING
SHOWERS ACROSS THE WINDWARD AREAS.

&&

.AVIATION...CONT VFR XCP ISOLD/SCT MVFR IN SHRA TONITE EAST PR/USVI/
LEEWARD ISLANDS. WIND BLO FL060 E 10-20 KT THRU MON...FL060-FL200
MAINLY E 5-12 KT INCR 12-22 KT TONITE/MON.

&&

.MARINE...SHORT PERIOD WAVES WILL CONTINUE AT 3-5 FEET AND UP TO 6
FEET ACROSS THE OFFSHORE ATLANTIC WATERS. EAST-NORTHEAST WINDS UP
TO 20 KTS. SMALL CRAFT SHOULD EXERCISE CAUTION ACROSS MUCH OF THE
WATERS.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  83  74  83  74 /  30  30  30  30
STT  85  74  87  77 /  30  30  30  30

&&

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

$$

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