Area Forecast Discussion
Issued by NWS San Juan, PR

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FXCA62 TJSJ 031854
AFDSJU

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
254 PM AST MON AUG 3 2015

.SYNOPSIS...SURFACE HIGH PRESSURE ACROSS THE CENTRAL ATLANTIC WILL
MAINTAIN MODERATE TO LOCALLY FRESH TRADE WINDS OVER THE NEXT
SEVERAL DAYS. MID TO UPPER LEVEL RIDGE WILL HOLD THRU AT LEAST
THURSDAY AS UPPER LEVEL TROF DEVELOPS NORTH-NORTHEAST OF THE
ISLANDS OVER THE ATLANTIC WATERS. NEXT TROPICAL WAVE WILL ENTER
THE EASTERN CARIBBEAN ON BY LATE FRIDAY/EARLY SATURDAY.

&&

.DISCUSSION...HIGH PRESSURE ALOFT...SAHARAN AIR LAYER AND STRONG
TRADE WIND CAP WILL MAINTAIN HAZY SKIES AND FAIR WEATHER
CONDITIONS THROUGH AT LEAST WEDNESDAY. THEN...UPPER LEVEL TROUGH
WILL INCREASE MOISTURE ACROSS THE FORECAST AREA THRU THE WEEKEND
WITH THE ARRIVAL OF A TROPICAL WAVE.

FORECAST STILL ON TRACK...EXPECT DRY CONDITIONS AND LIMITED SHOWER
ACTIVITY THRU WEDNESDAY. BY WEDNESDAY THRU SATURDAY...A WETTER
PATTERN IS EXPECTED WITH PASSING TRADE WIND SHOWERS OVER THE USVI
AND WINDWARD AREAS DURING THE EARLY MORNING HOURS FOLLOWED BY
AFTERNOON CONVECTION OVER THE INTERIOR AND WESTERN SECTIONS OF
PUERTO RICO. AS TROPICAL WAVE INTERACTS WITH UPPER LOW ON
SATURDAY...EXPECT MORE SHOWERS AND THUNDERSTORM ACTIVITY OVER THE
WATERS AND ACROSS PARTS OF THE ISLANDS.

&&

.AVIATION...VFR CONDITIONS SHOULD CONTINUE ACROSS ALL
TERMINALS DURING THE FORECAST PERIOD. SFC WNDS WILL PREVAIL FROM
THE EAST AT 15 TO 20 KTS.

&&

.MARINE...MODERATE TO LOCALLY FRESH TRADE WINDS EXPECTED OVER THE
NEXT SEVERAL DAYS. SMALL CRAFT OPERATORS SHOULD CONTINUE TO
EXERCISE CAUTION ACROSS MOST OF THE LOCAL WATERS THROUGH AT LEAST
TUESDAY NIGHT. SEAS 4-6 FEET DECREASING TO 3-5 FEET IN THE NEXT
FEW DAYS.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  79  90  79  88 /  20  20  20  20
STT  79  90  78  89 /  20  20  20  20

&&

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

$$

08/13



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