Flash Flood Warning 88, NWS JSJ

881 
WGCA72 TJSJ 262035
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
435 PM AST SUN SEP 26 2010

PRC127-262044-
/O.CAN.TJSJ.FF.W.0088.000000T0000Z-100926T2145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN JUAN PR-
435 PM AST SUN SEP 26 2010

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SAN JUAN
MUNICIPALITY...

LATEST READINGS OF THE RIO PIEDRAS INDICATED THAT THE RIVER HAS 
CRESTED AND IS NOW FALLING AND FLOODING IS NO LONGER EXPECTED. 
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 1844 6610 1845 6606 1836 6604 1836 6608

$$

ROSA

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
252 PM AST SUN SEP 26 2010

.SYNOPSIS...A MID LEVEL DISTURBANCE WILL CONTINUE MOVING WEST NORTHWEST
ACROSS THE LOCAL ISLANDS TONIGHT. A MID TO UPPER LEVEL HIGH PRESSURE
WILL EXTEND INTO THE LOCAL AREA MONDAY THROUGH WEDNESDAY.

&&

.DISCUSSION...SEA BREEZE CONVERGENCE COMBINED WITH LOW LEVEL MOISTURE
AND DIURNAL HEATING INDUCED AFTERNOON SHOWERS AND THUNDERSTORMS ACROSS
THE INTERIOR...NORTHWEST AND WEST SECTIONS OF PUERTO RICO AS WELL AS
ACROSS THE SAN JUAN METRO AREA. THIS ACTIVITY IS EXPECTED TO DIMINISH
BEFORE SUNSET...LEAVING PARTLY TO VARIABLY CLOUDY SKIES AND ISOLATED
SHOWERS ACROSS THESE AREAS. ISOLATED TO SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS STILL EXPECTED ACROSS PORTIONS OF THE SOUTHEAST COAST
OF PUERTO RICO AND THE VIRGIN ISLANDS TONIGHT THROUGH THE EARLY MORNING
HOURS.

COMPUTER MODELS...MIMIC TPW PRODUCT AND PROGNOSTIC SOUNDINGS INDICATED
ENOUGH MOISTURE ACROSS THE LOCAL ISLANDS WITH NO SIGNIFICANT DRYING
EXPECTED THROUGH THE FORECAST PERIOD. THEREFORE...THE NEXT FEW
AFTERNOONS AVAILABLE MOISTURE WILL COMBINE WITH LOCAL EFFECTS AND
DIURNAL HEATING TO PRODUCE CLOUDINESS...SHOWERS AND THUNDERSTORMS
ACROSS THE LOCAL ISLANDS. THE STEERING FLOW WILL REMAIN MAINLY
FROM THE SOUTHEAST TO EAST SOUTHEAST...MAINTAINING THE AFTERNOON
CONVECTION ACROSS THE NORTHWESTERN QUADRANT AND INTERIOR SECTIONS
OF THE PUERTO RICO EACH AFTERNOON.

LOOKING AHEAD...BY THE END OF WEEK...COMPUTER MODELS CONTINUE TO
ADVERTISE ADVECTION OF DEEP TROPICAL MOISTURE INTO THE LOCAL ISLANDS
AS A LOW PRESSURE SYSTEM DEVELOPS ACROSS THE FAR WESTERN CARIBBEAN.
AS A RESULT...BETTER CHANCES OF SIGNIFICANT PRECIPITATION ACROSS THE
LOCAL ISLANDS ARE POSSIBLE LATE THIS WEEK THROUGH THE NEXT WEEKEND.

&&

.AVIATION...SHRAS AND TSRAS TO CONT TIL AT LEAST 27/02Z THEN WILL
MOVE OFFSHORE AND CONT OVER LOCAL WATERS OVERNIGHT. TOPS BEFORE
26/22Z TO REACH 60 KFT. MTN OBSCURATIONS THRU 27/04Z. OCNL MVFR
CONDS AT TJBQ AND TJMZ. LLVL WINDS LESS THAN 20 KTS ESE UP THRU 26
KFT. GUSTY SFC WINDS IN AND NEAR THUNDERSTORMS TO 30 KTS. MVFR PSBL
AT TISX AFT 27/08Z IN SHRA. CONVECTION EXPECTED TO RETURN TO LAND
AREAS AFT 27/1530Z.

&&

.MARINE...GENERALLY EXPECT WINDS OF 17 KNOTS OR LESS AND SEAS OF 5
FEET OR LESS ACROSS THE REGIONAL WATERS THROUGH AT LEAST TUESDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  88  78  89  78 /  40  40  40  30
STT  88  78  89  79 /  20  60  60  50

&&

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

12/23

HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN
ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
526 AM AST SUN SEP 26 2010

AMZ710>745-PRZ001>013-271000-
SAN JUAN AND VICINITY-NORTHEAST-SOUTHEAST-EASTERN INTERIOR-
NORTH CENTRAL-CENTRAL INTERIOR-PONCE AND VICINITY-NORTHWEST-
WESTERN INTERIOR-MAYAGUEZ AND VICINITY-SOUTHWEST-CULEBRA-VIEQUES-
THE NEARSHORE AND OFF SHORE ATLANTIC AND CARIBBEAN COASTAL WATERS-
526 AM AST SUN SEP 26 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO AND THE
ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A MORE SOUTHERLY FLOW IS EXPECTED TO DEVELOP ACROSS THE LOCAL AREA
TOWARD THE END OF NEXT WEEK AS PRESSURES FALL IN RESPONSE TO A
DEVELOPING AREA OF LOW PRESSURE ACROSS THE WESTERN CARIBBEAN. THIS
SHOULD RESULT IN THE TRANSPORT OF DEEP TROPICAL MOISTURE ACROSS
THE LOCAL ISLANDS AND INCREASE THE CHANCES FOR WIDESPREAD RAINS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION NOT ANTICIPATED TODAY.

AMZ715-725-VIZ001-002-271000-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
526 AM AST SUN SEP 26 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS AND
THE ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A MORE SOUTHERLY FLOW IS EXPECTED TO DEVELOP ACROSS THE LOCAL AREA
TOWARD THE END OF NEXT WEEK AS PRESSURES FALL IN RESPONSE TO A
DEVELOPING AREA OF LOW PRESSURE ACROSS THE WESTERN CARIBBEAN. THIS
SHOULD RESULT IN THE TRANSPORT OF DEEP TROPICAL MOISTURE ACROSS
THE LOCAL ISLANDS AND INCREASE THE CHANCES FOR WIDESPREAD RAINS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION NOT ANTICIPATED TODAY.

SR