Flash Flood Warning 50, NWS JSJ

599 
WGCA72 TJSJ 302134
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
534 PM AST SUN MAY 30 2010

PRC069-302137-
/O.CAN.TJSJ.FF.W.0050.000000T0000Z-100531T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUMACAO PR-
534 PM AST SUN MAY 30 2010

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR HUMACAO
MUNICIPALITY...

RAIN THAT FELL OVER THE EASTERN THIRD OF PUERTO RICO HAS DISSIPATED 
AND THE RUNOFF IS NOT EXPECTED TO CAUSE PROBLEMS IN HUMACAO.

LAT...LON 1820 6576 1822 6581 1816 6591 1822 6594
      1828 6582 1841 6574 1837 6557 1818 6558
      1814 6570

$$

PRC037-053-077-085-089-103-119-310100-
/O.CON.TJSJ.FF.W.0050.000000T0000Z-100531T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JUNCOS PR-LAS PIEDRAS PR-LUQUILLO PR-NAGUABO PR-CEIBA PR-FAJARDO PR-
RIO GRANDE PR-
534 PM AST SUN MAY 30 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM AST FOR RIO
GRANDE...FAJARDO...CEIBA...NAGUABO...LUQUILLO...LAS PIEDRAS AND
JUNCOS MUNICIPALITIES...

AT 521 PM AST...HEAVY RAINFALL THAT AFFECTED THE EASTERN THIRD OF 
PUERTO RICO HAS DISSIPATED. HOWEVER...ROUTE 191 THAT GOES TO THE EL 
YUNQUE NATIONAL RAIN FOREST IS CLOSED DUE TO THE MAMEYES RIVER OUT 
OF ITS BANKS. IN ADDITION...THE FAJARDO RIVER IS OUT ITS BANKS WITH 
FLOODING LIKELY OCCURRING AT THE INTERSECTION OF HIGHWAY 3 AND 53. 
MOTORISTS ACROSS NORTHEAST PUERTO RICO SHOULD EXERCISE EXTREME 
CAUTION DUE TO SWOLLEN RIVERS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN SAN
JUAN.

&&

LAT...LON 1820 6576 1822 6581 1816 6591 1822 6594
      1828 6582 1841 6574 1837 6557 1818 6558
      1814 6570

$$

ROSA

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

432 
WGCA72 TJSJ 302245
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
645 PM AST SUN MAY 30 2010

PRC037-053-077-085-089-103-119-302254-
/O.CAN.TJSJ.FF.W.0050.000000T0000Z-100531T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JUNCOS PR-LAS PIEDRAS PR-LUQUILLO PR-NAGUABO PR-CEIBA PR-FAJARDO PR-
RIO GRANDE PR-
645 PM AST SUN MAY 30 2010

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR RIO GRANDE...
FAJARDO...CEIBA...NAGUABO...LUQUILLO...LAS PIEDRAS AND JUNCOS
MUNICIPALITIES...

FLOOD WATERS HAVE BEGUN TO RECEDE ACROSS THE EASTERN THIRD OF PUERTO 
RICO AND NO ADDITIONAL HEAVY RAINFALL IS EXPECTED TONIGHT. 
THEREFORE...THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 1820 6576 1822 6581 1816 6591 1822 6594
      1828 6582 1841 6574 1837 6557 1818 6558
      1814 6570

$$

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
306 PM AST SUN MAY 30 2010

.SYNOPSIS...AT UPPER LEVELS...HIGH PRESSURE WILL MOVE WEST INTO
THE CARIBBEAN AS THE MID LATITUDE TROUGH EXTENDING CLOSE TO THE
AREA MOVES EAST. A SHORT WAVE TROUGH WILL PASS NORTH OF THE AREA
ON FRIDAY AND DEEPER TROUGH WILL DIG OVER PUERTO RICO THE MONDAY
AFTER NEXT.

AT MID LEVELS...A RIDGE WILL EXTEND ACROSS THE CARIBBEAN FROM THE
EAST DURING THE WEEK AND SETTLE IN THE WEST END BY SATURDAY. HIGH
PRESSURE SHIFTS NORTH OF THE CARIBBEAN AFTER SUNDAY OF NEXT WEEK.

AT LOWER LEVELS...A TROUGH WILL VACILLATE OVER THE MONA CHANNEL
AND PUERTO RICO AND EAST NORTHEAST INTO THE ATLANTIC DURING THE
NEXT SEVERAL DAYS ACTING AS THE FOCUS FOR CONVECTION. ON TUESDAY
OR WEDNESDAY DRYER AIR FROM THE EAST WILL DISPLACE THE COPIOUS
MOISTURE EXPERIENCED DURING THE LAST WEEK.

&&

.DISCUSSION...VERY HIGH MOISTURE CONTINUES OVER THE AREA BUT
CONVECTION OVER LAND WAS QUITE LIMITED SO FAR. THIS APPEARS TO BE
DUE TO THE PROXIMITY OF A ZONE OF CONVERGENCE PRODUCING MODERATE
TO HEAVY SHOWERS JUST NORTHWEST OF PUERTO RICO AND THE ASSOCIATED
CLOUDINESS WHICH HAS LIMITED SOLAR HEATING OVER THE AREA. THIS BAND IS...
HOWEVER...EDGING TOWARD THE ISLAND AND MAY SPREAD BETTER RAINFALL
OVER THE AREA BEGINNING AROUND 4 PM AST. SOME HEAVY SHOWERS
HAVE BEEN GENERATED NEAR FAJARDO. MODELS SHOW CONTINUED ACTIVITY IN
A BAND ACROSS PUERTO RICO...BUT NOT SO MUCH OVER THE U.S. VIRGIN
ISLANDS.TODAY AND TOMORROW. TOMORROW EVENING THERE WILL BE BETTER
MOISTURE FOR THE U.S. VIRGIN ISLANDS AND SHOWERS ARE LIKELY TO
INCREASE TOMORROW AFTERNOON AND EVENING THERE.

WILL CONTINUE THE WATCH AND WARNINGS FOR THE MANATI AND LA PLATA
RIVERS DUE TO THE UNCERTAINTY IN THE POSITION OF THE BAND OF
CONVERGENCE AND HOW LONG IT WILL AFFECT THE LOCAL AREA. SHOULD IT
CONTINUE TO MOVE TO THE SOUTHEAST RAIN COULD EASILY PUSH SMALL
STREAMS AND PREVIOUSLY FLOODED RIVERS BACK INTO FLOODED CONDITION.

IN THE MEDIUM RANGE...DRIER AIR PUSHES INTO THE AREA LATE TUESDAY
AND DURING THE DAY WEDNESDAY AND THIS SHOULD MARK THE BEGINNING OF
DRIER WEATHER AND WARMER CONDITIONS OVER NORTHERN PUERTO RICO IN
SOUTHEAST FLOW. THE ECMWF IS ALSO SHOWING THIS TREND...WHEREAS
PREVIOUSLY IT REMAINED WET THROUGH WEDNESDAY. SOME CONVECTION IS STILL
POSSIBLE OVER NORTHWEST PUERTO RICO IN CONVECTION RESULTING FROM
RESIDUAL SURFACE MOISTURE.

&&

.AVIATION...
OCCASIONAL MVFR CONDITIONS WILL REMAIN POSSIBLE ACROSS...JBQ/JMZ
AND TJSJ DURING THE NEXT 12 HOURS IN SHRA OR TSRA. PREVAILING VFR
CONDITIONS...WITH BRIEF MVFR CONDITIONS EXPECTED ELSEWHERE. WATCH
FOR FREQUENT MOUNTAIN OBSCURATIONS.

&&

.MARINE...WINDS AND SEAS WILL REMAIN BELOW SMALL CRAFT
CRITERIA...BUT THUNDERSTORMS WILL CONTINUE TO POSE A HAZARD TO
NAVIGATION THROUGH TUESDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
SJU  78  89  78  90 /  70  50  30  60
STT  80  87  80  87 /  50  40  40  70

&&

.SJU WATCHES/WARNINGS/ADVISORIES...
PR...FLASH FLOOD WATCH THROUGH MONDAY AFTERNOON FOR CENTRAL INTERIOR-
     CULEBRA-EASTERN INTERIOR-MAYAGUEZ AND VICINITY-NORTH
     CENTRAL-NORTHEAST-NORTHWEST-PONCE AND VICINITY-SAN JUAN AND
     VICINITY-SOUTHEAST-SOUTHWEST-VIEQUES-WESTERN INTERIOR.

VI...FLASH FLOOD WATCH THROUGH MONDAY AFTERNOON FOR ST CROIX-ST.
     THOMAS/ST. JOHN/ADJACENT ISLANDS.

&&

23/12

HAZARDOUS WEATHER OUTLOOK FOR PUERTO RICO AND THE U.S. VIRGIN
ISLANDS
NATIONAL WEATHER SERVICE SAN JUAN PR
645 AM AST SUN MAY 30 2010

AMZ710>745-PRZ001>013-311045-
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-
645 AM AST SUN MAY 30 2010

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

.DAY ONE...TODAY AND TONIGHT

A VERY MOIST AND UNSTABLE AIR MASS WILL COMBINE WITH LOCAL EFFECTS
AND FAVORABLE MID TO UPPER LEVEL CONDITIONS TODAY THROUGH
TONIGHT...TO PRODUCE NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS
ACROSS THE LOCAL ISLANDS. PERIODS OF HEAVY RAINFALL AND URBAN AND
SMALL STREAM FLOODING ARE STILL EXPECTED IN MANY AREAS...WITH THE
POTENTIAL FOR MORE SIGNIFICANT FLASH AND RIVER FLOODING. A FLASH
FLOOD WATCH REMAINS IN EFFECT FOR ALL OF PUERTO RICO AND CULEBRA
AND VIEQUES TODAY THROUGH MONDAY AFTERNOON.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A VERY MOIST AND UNSTABLE AIR MASS WILL CONTINUE TO COMBINE WITH
LOCAL EFFECTS AND FAVORABLE MID TO UPPER LEVEL CONDITIONS MONDAY
AND PROBABLY TUESDAY...TO PRODUCE ADDITIONAL SHOWERS AND THUNDERSTORMS
ACROSS THE LOCAL ISLANDS. PERIODS OF HEAVY RAINFALL AND URBAN AND
SMALL STREAM FLOODING ARE EXPECTED IN MANY AREAS...WITH THE
POTENTIAL FOR MORE SIGNIFICANT FLASH AND RIVER FLOODING.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUESTED TODAY THROUGH THIS EVENING. ANY
REPORTS OF HEAVY RAINFALL OR FLOODING WOULD BE GREATLY
APPRECIATED.

AMZ715-725-VIZ001-002-311045-
ST. THOMAS ST. JOHN ADJACENT ISLANDS-ST CROIX-
NEARSHORE ATLANTIC AND ADJACENT CARIBBEAN COASTAL WATERS-
645 AM AST SUN MAY 30 2010

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

.DAY ONE...TODAY AND TONIGHT
A VERY MOIST AND UNSTABLE AIR MASS WILL COMBINE WITH LOCAL
EFFECTS AND FAVORABLE MID TO UPPER LEVEL CONDITIONS TODAY THROUGH
TONIGHT...TO PRODUCE NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS
ACROSS THE LOCAL ISLANDS. PERIODS OF HEAVY RAINFALL AND URBAN AND
GUT FLOODING ARE EXPECTED IN MANY AREAS...WITH THE POTENTIAL FOR
MORE SIGNIFICANT FLASH FLOODING. A FLASH FLOOD WATCH REMAINS IN
EFFECT FOR ALL OF THE U.S. VIRGIN ISLANDS THROUGH MONDAY AFTERNOON.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
A VERY MOIST AND UNSTABLE AIR MASS WILL CONTINUE TO COMBINE WITH
LOCAL EFFECTS AND FAVORABLE MID TO UPPER LEVEL CONDITIONS FOR
MONDAY AND TUESDAY ALSO...TO PRODUCE ADDITIONAL SHOWERS AND
THUNDERSTORMS ACROSS THE LOCAL ISLANDS. PERIODS OF HEAVY RAINFALL
AND URBAN AND GUT FLOODING ARE EXPECTED IN MANY AREAS... WITH THE
POTENTIAL FOR MORE SIGNIFICANT FLASH FLOODING. A FLASH FLOOD WATCH
WILL REMAIN IN EFFECT FOR ALL OF THE U.S. VIRGIN ISLANDS THROUGH
MONDAY AFTERNOON.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS REQUESTED TODAY THROUGH THIS EVENING. ANY
REPORTS OF HEAVY RAINFALL OR FLOODING WOULD BE GREATLY
APPRECIATED.

PRC029-053-089-119-301930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
309 PM AST SUN MAY 30 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A SPECIAL WEATHER
STATEMENT EFFECTIVE UNTIL 330 PM AST FOR PEOPLE IN THE FOLLOWING
MUNICIPALITIES
IN PUERTO RICO
     LUQUILLO...CANOVANAS...FAJARDO AND RIO GRANDE

AT 303 PM AST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS OVER PLAYA FORTUNA...OR ABOUT OVER
LUQUILLO...MOVING NORTHEAST AT 10 MPH. HEAVY RAINS MAY FLOOD LOW
LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND
DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS
OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

ER

PRC029-053-089-119-301930-

COMUNICADO ESPECIAL SOBRE LAS CONDICIONES DEL TIEMPO
SERVICIO NACIONAL DE METEOROLOGIA SAN JUAN PR
309 PM AST DOMINGO 30 DE MAYO DE 2010

EL SERVICIO NACIONAL DE METEOROLOGIA EN SAN JUAN HA EMITIDO UN
COMUNICADO ESPECIAL SOBRE LAS CONDICIONES DEL TIEMPO QUE ESTARA EN
EFECTO HASTA LAS 330 PM AST PARA LOS SIGUIENTES MUNICIPIOS EN
PUERTO RICO...
LUQUILLO...CANOVANAS...FAJARDO Y RIO GRANDE

...TRONADAS RAPIDAS CON AGUACEROS FUERTES Y VIENTOS EN RAFAGAS...

A LAS 303 PM AST...EL RADAR DOPPLER INDICO TRONADAS FUERTES SOBRE
PLAYA FORTUNA...O CERCA DE LUQUILLO...MOVIENDOSE AL NORESTE A 10
MPH. AGUACEROS FUERTES PUEDEN INUNDAR AREAS BAJAS Y ELEVADOS. EVITEN
ESTOS LUGARES Y NO CRUZEN CARRETERAS INUNDADAS. LOS NIVELES DE LOS
RIACHUELOS PUEDEN AUMENTAR RAPIDAMENTE...POR LO TANTO BUSQUE UN AREA
MAS ALTA SI LAS AGUAS AMENAZAN.

RELAMPAGOS INTENSOS HAN SIDO REPORTADOS CON ESTAS TRONADAS. SI ESTA
AFUERA...MANTENGASE LEJOS DE OBJETOS AISLADOS COMO ARBOLES. ENTRE A
UN LUGAR BAJO TECHO SI ES POSIBLE...MANTENGASE ALEJADO DE VENTANAS Y
EVITE USAR EL TELEFONO A MENOS QUE SEA UNA EMERGENCIA. DESCONECTE
ENSERES ELECTRICOS INNECESARIOS ANTES DE QUE LAS TRONADAS LLEGUEN.

ER/JJA