Flash Flood Warning 15, NWS JSJ

000 
WGCA52 TJSJ 270529
FFWSJU
VIC020-030-270730-
/O.NEW.TJSJ.FF.W.0015.071027T0527Z-071027T0730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
127 AM AST SAT OCT 27 2007

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING ISLANDS

  IN THE U.S. VIRGIN ISLANDS
     SAINT JOHN
     SAINT THOMAS

* UNTIL 330 AM AST

* AT 121 AM AST...NWS DOPPLER RADAR INDICATED INTERMITTENT           
  THUNDERSTORMS PASSING ACROSS THE NORTHERN VIRGIN ISLANDS PRODUCING 
  FREQUENT PERIODS OF VERY HEAVY RAIN...AND INDUCING FLASH           
  FLOODING.  

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...ROADS 
AND LANDS ALONG THE BANKS OF CREEKS AND GUTS AND OTHER LOW 
LYING AREAS ARE SUBJECT TO FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 1829 6464 1825 6478 1828 6484 1828 6499
      1831 6507 1841 6505 1842 6498 1840 6466
      1836 6463
TIME...MOT...LOC 0527Z 180DEG 0KT 1878 6578

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
439 PM AST SUN APR 22 2007

.SYNOPSIS...
THE REMNANTS OF AN OLD FRONTAL BOUNDARY/SHEARLINE EXTENDING FROM THE
MONA PASSAGE NORTHEAST ACROSS THE ATLANTIC TODAY WILL RETROGRADE
SLIGHTLY TO THE WEST NORTHWEST OVERNIGHT THROUGH MONDAY. IN THE
MEANTIME....A LINGERING SURFACE TROUGH EXTENDING FROM THE CENTRAL
CARIBBEAN NORTHEAST BETWEEN EASTERN PUERTO RICO AND THE U.S. VIRGIN
ISLANDS...THEN CONTINUING NORTHEAST ACROSS THE ATLANTIC WILL REMAIN
NEARLY STATIONARY AT LEAST THROUGH TUESDAY. SURFACE HIGH PRESSURE
ALONG THE EASTERN SEABOARD OF THE U.S. AND EXTENDING EAST INTO THE
WEST ATLANTIC WILL MOVE FURTHER INTO THE ATLANTIC AND REMAIN THERE
FOR THE NEXT SEVERAL DAYS. IN THE MID TO UPPER LEVELS...A HIGH
PRESSURE RIDGE EXTENDS EAST TO WEST OVER THE CARIBBEAN BASIN...WHILE
A DEEP TROUGH EXTENDS ACROSS THE WEST ATLANTIC SOUTHWARDS ACROSS THE
GREATER ANTILLES. THIS WILL MAINTAIN AN OVERALL WESTERLY WIND FLOW
ACROSS THE LOCAL REGION.

&&
.DISCUSSION...
SKIES BECAME MOSTLY CLOUDY ACROSS THE LOCAL ISLANDS AND SURROUNDING
WATERS DURING THE DAY. BY MID MORNING...SHOWERS AND THUNDERSTORMS
DEVELOPED ACROSS THE INTERIOR SECTIONS OF PUERTO RICO AND SLOWLY
DRIFTED NORTH NORTHEAST TO AFFECT MOST OF THE NORTHERN HALF OF
PUERTO RICO. SOME OF THE STORMS PRODUCED LOCALLY HEAVY RAINFALL AND
CAUSED FLOODING PROBLEMS IN SOME AREAS. PARTS OF THE U.S. VIRGIN
ISLANDS ALSO RECEIVED ISOLATED AREAS OF MODERATE TO LOCALLY HEAVY
RAINFALL BUT ACTIVITY WAS LESS FREQUENT.

SHORT TERM...THE PROXIMITY OF THE FRONTAL BOUNDARY AND THE SURFACE
TROUGH COMBINED WITH MID TO UPPER LEVEL DYNAMICS INDUCED BY THE
UPPER TROUGH WILL CONTINUE TO COMBINE WITH DAYTIME HEATING AND
LOCAL EFFECTS...TO MAINTAIN ACTIVE WEATHER CONDITIONS ACROSS THE
REGION AT LEAST THROUGH TUESDAY. RAINFALL OVER LAND WILL DIMINISH
DURING THE LATE EVENING HOURS...HOWEVER EARLY MORNING SHOWERS AND
ONE OR TWO ISOLATED THUNDERSTORMS CAN BE EXPECTED ALONG COASTAL
AREAS... ESPECIALLY IN THE EAST AND SOUTHEAST SECTIONS OF PUERTO
RICO. PARTS OF THE U.S. VIRGIN ISLANDS WILL ALSO CONTINUE TO
RECEIVE PERIODS OF RAINFALL OVER THE NEXT COUPLE OF DAYS...SOME OF
WHICH WILL CONTINUE TO BE LOCALLY HEAVY AT TIMES.

.LONG TERM...MODELS SUGGEST A GRADUAL IMPROVEMENT IN THE WEATHER
CONDITIONS ACROSS THE REGION DURING THE LATTER PART OF THE WEEK AS
THE FRONTAL ZONE AND ASSOCIATED TROUGH SLOWLY WEAKENS AND LIFT EAST
NORTHEAST OF THE AREA...AND HIGH PRESSURE WITH A MODERATE EASTERLY
WIND FLOW PREVAILS ACROSS THE LOCAL REGION.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  75  86  74  86 /  60  40  40  40
STT  77  85  76  84 /  40  20  40  40

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...SCA IN EFFECT FOR AMZ710 FROM MONDAY MORNING TO MONDAY AFTERNOON.
VI...SCA IN EFFECT FOR AMZ710 FROM MONDAY MORNING TO MONDAY AFTERNOON.

&&

06/09

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN JUAN PR
630 AM AST SUN APR 22 2007

PRZ001>013-AMZ710>750-231000-
630 AM AST SUN APR 22 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PUERTO RICO.

.TODAY AND TONIGHT...SCATTERED TO NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS ARE EXPECTED ACROSS THE AREA TODAY THROUGH THIS
EVENING...WITH THE HEAVIEST RAIN EXPECTED TO BE FOCUSED ACROSS THE
NORTHERN SLOPES...INTERIOR...EASTERN INTERIOR OF THE ISLAND...
POSSIBLY EXTENDING INTO VIEQUES. THE RESULTING RAINFALL MAY CAUSE
PONDING OF WATER ACROSS LOW LYING AND POOR DRAINAGE AREAS...AND
FLOODING OF URBAN AREAS AND STREAMS...HIGHWAYS...STREETS AND
UNDERPASSES. ISOLATED AREAS COULD SEE MORE SIGNIFICANT FLOODING
PROBLEMS. DUE TO RECENT RAINS...LANDSLIDES WILL ALSO BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...A PERSISTENT AND GRADUALLY WEAKENING
FRONTAL ZONE WILL MEANDER ACROSS THE LOCAL AREA THROUGH TUESDAY OR
WEDNESDAY...AND MAINTAIN MOIST AND UNSTABLE WEATHER CONDITIONS
ACROSS THE LOCAL ISLANDS...RESULTING IN THE POTENTIAL FOR PERIODS OF
HEAVY RAINFALL MAINLY DURING THE AFTERNOON HOURS. SATURATED SOILS
FROM PREVIOUS DAYS...COULD CAUSE MINOR FLOODING ACROSS STREAM AND
CREEKS AS WELL AS URBAN AREAS...AND LOW LYING AND POOR DRAINAGE
LOCATIONS...AND ALSO MAINTAIN THE POSSIBILITY FOR MUDSLIDES ACROSS
STEEP TERRAIN.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY TODAY.

VIZ001-002-AMZ710>730-231000-
630 AM AST SUN APR 22 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE U.S. VIRGIN ISLANDS.

.TODAY AND TONIGHT...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS
ARE EXPECTED ACROSS THE AREA TODAY THROUGH THIS EVENING...MAINLY
OCCURRING DURING THE AFTERNOON HOURS. THE RESULTING RAINFALL MAY
CAUSE PONDING OF WATER ACROSS LOW LYING AND POOR DRAINAGE
AREAS...AND FLOODING OF URBAN AREAS...GUTS AND STREAMS...
HIGHWAYS...STREETS AND UNDERPASSES. ISOLATED AREAS COULD SEE MORE
SIGNIFICANT FLOODING PROBLEMS. DUE TO RECENT RAINS...LANDSLIDES WILL
ALSO BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...A GRADUALLY WEAKENING FRONTAL ZONE WILL
MEANDER ACROSS THE LOCAL AREA THROUGH TUESDAY OR WEDNESDAY...AND
MAINTAIN MOIST AND UNSTABLE WEATHER CONDITIONS ACROSS THE LOCAL
ISLANDS...RESULTING IN THE POTENTIAL FOR PERIODS OF HEAVY RAINFALL
MAINLY DURING THE AFTERNOON HOURS. SATURATED SOILS FROM PREVIOUS
DAYS...COULD CAUSE MINOR FLOODING ACROSS URBAN AREAS...LOW LYING AND
POOR DRAINAGE LOCATIONS...AS WELL AS CREEKS AND GUTS. LANDSLIDES
WILL ALSO BE POSSIBLE ACROSS HIGHER AND STEEP TERRAIN.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY TODAY.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE WEB
SITE FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS AT (ALL LOWERCASE
LETTERS): HTTP://WWW.SRH.NOAA.GOV/SJU

FROM YOUR PDA/PHONE: HTTP://MOBILE.SRH.NOAA.GOV OR
WWW.SRH.NOAA.GOV/WML