Flash Flood Warning 29, NWS JSJ

704 
WGCA72 TJSJ 172255
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
655 PM AST MON MAY 17 2010

PRC103-172301-
/O.EXP.TJSJ.FF.W.0029.000000T0000Z-100517T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NAGUABO PR-
655 PM AST MON MAY 17 2010

...THE FLASH FLOOD WARNING WILL EXPIRE AT 700 PM AST FOR NAGUABO
MUNICIPALITY...

AT 650 PM AST...THE HEAVY RAINFALL WHICH AFFECTED THE MUNICIPALITY 
OF NAGUABO EARLIER TODAY HAD ENDED...AND ONLY SCATTERED LIGHT TO 
MODERATE RAIN SHOWERS ARE EXPECTED ACROSS THIS AREA THROUGH THE 
REMAINDER OF THE EVENING HOURS. IN ADDITION...THE RIO BLANCO WAS 
BEGINNING TO RECEDE. FOR THESE REASONS...THE FLASH FLOOD WARNING 
WILL BE ALLOWED TO EXPIRE AT 7 PM AST. WHILE THE FLASH FLOOD WARNING 
IS BEING ALLOWED TO EXPIRE...AND URBAN AND SMALL STREAM FLOOD 
ADVISORY REMAINS IN EFFECT FOR THE MUNICIPALITY OF NAGUABO THROUGH 
730 PM AST.

LAT...LON 1828 6577 1820 6569 1817 6575 1821 6580
      1828 6580

$$

SR

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

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
329 PM AST MON MAY 17 2010

.SYNOPSIS...A SERIES OF UPPER LEVEL DISTURBANCES WILL MOVE ACROSS
OR JUST NORTH OF THE LOCAL AREA THROUGH MID WEEK AND WILL INTERACT
WITH A MOIST AND UNSTABLE AIR MASS AND LOCAL EFFECTS...TO PRODUCE
A CONTINUATION OF UNSETTLED WEATHER ACROSS THE LOCAL ISLANDS.

&&

.DISCUSSION...FOR TONIGHT AND TUESDAY THROUGH AT LEAST THE FIRST
PART OF WEDNESDAY...A MOIST AND RELATIVELY UNSTABLE AIR MASS WILL
CONTINUE ACROSS THE LOCAL AREA. DESPITE A TENDENCY FOR SOME MID
LEVEL RIDGING...THIS MOISTURE AND INSTABILITY...DECENT SURFACE
CONVERGENCE...OROGRAPHIC LIFTING AND LEFTOVER VENTILATION FROM
WESTERLIES AND A SERIES OF DISTURBANCES AT UPPER LEVELS...SHOULD
CONTINUE TO ALLOW FOR ADDITIONAL CLOUDINESS...SHOWERS AND A FEW
THUNDERSTORMS OVER PARTS OF THE LOCAL ISLANDS EACH DAY. FOR
TONIGHT AND THROUGH THE NEXT COUPLE OF DAYS...EXPECT ADDITIONAL
PERIODS OF HEAVY RAINFALL AND URBAN AND SMALL STREAM FLOODING...
WITH THE POTENTIAL FOR LOCALIZED FLASH AND RIVER FLOODING.

LOOKING AHEAD...STILL APPEARS THAT BRIEF OVERALL DRYING "MAY"
OCCUR FOR THE SECOND PART OF WEDNESDAY THROUGH EARLY THURSDAY...
BEFORE MOISTURE INCREASES AGAIN LATER THURSDAY THROUGH FRIDAY AND
BEYOND...WITH THE "POTENTIAL" FOR AT LEAST A COUPLE MORE DAYS OF
ACTIVE WEATHER AND "POTENTIAL" HEAVY RAINFALL AND FLOODING...
ESPECIALLY AS WE TRANSITION INTO LATE IN THE WEEK AND THE UPCOMING
WEEKEND. IT IS MAY IN THE NORTHEAST CARIBBEAN. STAY TUNED.

&&

.AVIATION...SHOWERS AND THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS
PR TAF SITES AT LEAST UNTIL 17/23Z. INTERMITTENT MVFR TO IFR
CONDITIONS AND MOUNTAIN OBSCURATIONS WILL BE POSSIBLE IN PASSING
SHRA OR TSRA...ESPECIALLY OVER TJMZ...TJBQ AND TJSJ. AFTER
17/23Z...VFR CONDITIONS ARE EXPECTED ACROSS MOST OF THE TAF
SITES. LLVL WIND FLOW WILL REMAIN ESE AT 10-20KTS...WITH SOME
HIGHER GUSTS.

&&

.MARINE...GENERALLY EXPECT WINDS OF 19 KNOTS OR LESS AND SEAS OF
6 FEET OR LESS ACROSS THE REGIONAL WATERS THROUGH AT LEAST
WEDNESDAY. THERE IS A PRECAUTIONARY STATEMENT FOR MOST OF THE
LOCAL COASTAL WATERS TONIGHT.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  77  89  77  89 /  40  50  40  40
STT  79  87  79  88 /  40  40  40  50

&&

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

HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN
ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
518 AM AST MON MAY 17 2010

AMZ710>745-PRZ001>013-181100-
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-
518 AM AST MON MAY 17 2010

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

.DAY ONE...TODAY AND TONIGHT

AN AREA OF LOW LEVEL CLOUDS AND MOISTURE BEGINS TO APPROACH THE LOCAL
AREA...THEREFORE SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ARE
EXPECTED TO DEVELOP OVER THE WEST AND INTERIOR SECTIONS OF PUERTO
RICO THIS AFTERNOON. SOME RAINS COULD BE LOCALLY HEAVY AND MAY
INDUCE URBAN AND SMALL STREAM FLOODING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

AMZ715-725-VIZ001-002-181100-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
518 AM AST MON MAY 17 2010

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

.DAY ONE...TODAY AND TONIGHT

SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED ACROSS THE LOCAL
ISLANDS FROM TIME TO TIME. SOME RAINS COULD BE LOCALLY HEAVY
AND MAY INDUCE URBAN AND SMALL STREAM FLOODING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.