Area Forecast Discussion

Received: Wed Sep  8 16:56:06 AST 2010


000
FXCA62 TJSJ 082046 CCA
AFDSJU

AREA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE SAN JUAN PR
239 PM AST WED SEP 8 2010

.SYNOPSIS...A SUBTROPICAL RIDGE NORTH OF THE AREA WILL WEAKEN OVER 
THE NEXT 24 HRS AS A POLAR TROUGH AMPLIFIES ACROSS THE WEST CENTRAL 
ATLANTIC. 

&&

.DISCUSSION...AN AREA OF LOW LEVEL MOISTURE MOVED OVER THE LOCAL
ISLANDS AND NE PORTIONS OF PUERTO RICO...AFFECTING THE SAN JUAN
METROPOLITAN AREA. ANOTHER AREA OF HEAVY SHOWERS AND THUNDERSTORMS
DEVELOPED OVER THE WEST AND WESTERN INTERIOR SECTIONS OF PUERTO
RICO DURING THE AFTERNOON HOURS. THESE SHOWERS GENERATED RAINFALL
ACCUMULATIONS OF BETWEEN 1 TO 3 INCHES IN SOME AREAS ACROSS THE
WESTERN INTERIOR SECTIONS. MOST OF THESE SHOWERS WILL MOVE WEST OVER 
THE MONA PASSAGE OR DISSIPATE. 

ON THURSDAY AND FRIDAY...EXPECT TYPICAL AFTERNOON ACTIVITY WITH
SHOWERS AND THUNDERSTORMS AFFECTING THE WESTERN PORTIONS OF PUERTO
RICO. AN AREA OF TROPICAL MOISTURE WILL DETACH FROM THE ITCZ OVER
THE SOUTHEAST CARIBBEAN AND MOVE TOWARD THE LOCAL FORECAST AREA LATE 
SATURDAY AND SUNDAY. THEREFORE EXPECT AN INCREASE IN SHOWER AND 
THUNDERSTORMS COVERAGE FROM SATURDAY THROUGH MONDAY.

&&

.AVIATION...MTN OBSCURATIONS WILL DIMINISH DURG THE PERIOD 
08/21-09/02Z. AN AREA OF BKN MID CLOUDS WITH SCT LOW CLOUDS WILL 
PREVAIL AFT 08/22Z. SHWRS AND TSTMS WILL RE-FORM AFT 09/16Z IN 
INTERIOR AND SW PR WITH ACCOMPANYING MVFR CONDS.

&&

.MARINE...SEAS WILL CONTINUE TO SUBSIDE AS WINDS CONTINUE TO
DECREASE. DO NOT EXPECT ANY SIGNIFICANT WAVE OR SWELL EVENT FOR
THE NEXT SEVERAL DAYS. 


&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  78  87  77  88 /  20  10  20  20 
STT  78  89  78  88 /  30  20  10  20 

&&

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

$$

11/10/12