Caribbean - Central America Weather

[cycloneye]

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
814 AM AST SAT APR 24 2010

PRC007-019-021-025-029-031-037-039-043-045-047-053-061-063-073-077-
085-087-089-101-103-105-107-119-127-135-139-141-143-149-241600-
/O.NEW.TJSJ.FA.Y.0075.100424T1214Z-100424T1600Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAYAMON PR-CIALES PR-CAGUAS PR-COAMO PR-COROZAL PR-COMERIO PR-
AGUAS BUENAS PR-BARRANQUITAS PR-JUNCOS PR-JAYUYA PR-GURABO
PR-OROCOVIS PR-NARANJITO PR-MOROVIS PR-TOA ALTA PR-UTUADO
PR-VILLALBA PR-TRUJILLO ALTO PR-VEGA ALTA PR-LAS PIEDRAS PR-LUQUILLO
PR-NAGUABO PR-GUAYNABO PR-CEIBA PR-CANOVANAS PR-FAJARDO PR-CAROLINA
PR-SAN JUAN PR-LOIZA PR-RIO GRANDE PR-
814 AM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXPANDED AND EXTENDED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY
FOR THE FOLLOWING MUNICIPALITIES...

IN PUERTO RICO
BAYAMON...CIALES...CAGUAS...COAMO...COROZAL...COMERIO...AGUAS
BUENAS...BARRANQUITAS...JUNCOS...JAYUYA...GURABO...OROCOVIS...
NARANJITO...MOROVIS...TOA ALTA...UTUADO...VILLALBA...TRUJILLO
ALTO...VEGA ALTA...LAS PIEDRAS...LUQUILLO...NAGUABO...
GUAYNABO...CEIBA...CANOVANAS...FAJARDO...CAROLINA...SAN JUAN...
LOIZA AND RIO GRANDE

* UNTIL NOON AST

* AT 810 AM AST...DOPPLER WEATHER RADAR CONTINUED TO INDICATE
SHOWERS AND ISOLATED THUNDERSTORMS...SOME WITH VERY HEAVY RAIN
AFFECTING PARTS OF THE ADVISORY AREA. ALTHOUGH SOME AREAS HAVE NOT
YET RECEIVED MUCH RAINFALL...SHOWERS AND ISOLATED THUNDERSTORMS ARE
EXPECTED TO QUICKLY EXPAND ACROSS THESE AREAS DURING THE NEXT HOUR.
RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED OVER MUCH OF THE
ADVISORY THROUGH NOON.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF CREEKS
AND STREAMS...ROADS...HIGHWAYS...STREETS...ROADSIDE CULVERTS...
UNDERPASSES AND OTHER LOW LYING SPOTS. IN ADDITION...THE HEAVY RAINS
COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

[cycloneye]

FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
757 AM AST SAT APR 24 2010

PRC017-091-241800-
/O.EXT.TJSJ.FA.W.0003.000000T0000Z-100424T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BARCELONETA PR-MANATI PR-
757 AM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLOOD WARNING FOR...
BARCELONETA MUNICIPALITY IN PUERTO RICO...
MANATI MUNICIPALITY IN PUERTO RICO...
THIS INCLUDES THE CITY OF BARCELONETA...

* UNTIL 200 PM AST SATURDAY

* AT 744 AM AST USGS RIVER SENSORS ON THE RIO GRANDE DE MANATI AT
MANATI CONTINUE TO SHOW FLUCTUATIONS AND REMAINS ABOVE FLOOD STAGE.
WITH THE FLOW ON THE RIO GRANDE DE MANATI BEING AT THESE ELEVATED
LEVELS AFTER CONSIDERABLE RAINFALL FROM YESTERDAY...COMBINED WITH
SATURATED SOILS AND THE POTENTIAL FOR SOME SIGNIFICANT RAINFALL
TODAY...THE FLOOD WARNING WILL BE EXTENDED THROUGH AT LEAST 200 PM
AST.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOOD STAGE AT THE RIO GRANDE DE MANATI AT MANATI IS 25.0 FEET,
THE CURRENT RIVER STAGE IS 31.40 FEET AND FLUCTUATING.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

[cycloneye]

Look how fast one of the largest rivers in Puerto Rico rose last night.But it has gone flat this morning and hopefully it goes down from here.That goes to other rivers and streamers.

[cycloneye]

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
1112 AM AST SAT APR 24 2010

.UPDATE...NO CHANGES TO PREVIOUS SYNOPSIS...AS PERSISTENT
MODERATE TO HEAVY SHOWERS CONTINUES TO PUSH ACROSS EASTERN AND
NORTHEASTERN PUERTO RICO AT THE PRESENT TIME. THE EXCESSIVE RUNOFF
FROM THIS RAINFALL...IN COMBINATION WITH THE SATURATED SOILS ARE
CAUSING MINOR FLOODING OF CREEKS...STREAMS AND ROADWAYS IN LOW
LYING AREAS.

&&

.AVIATION...NO SIGNIFICANT CHANGES TO PREVIOUS SYNOPSIS...ACROSS THE
LOCAL TAF SITES MOSTLY VFR CONDITIONS ARE EXPECTED UNTIL 24/17Z.
PERIODS OF MVFR OR EVEN IFR CEILINGS...VISIBILITIES AND MOUNTAIN
OBSCURATIONS ARE EXPECTED FROM 24/17 TO 24/23Z...ESPECIALLY ACROSS
TJPS...TJMZ AND TJBQ DUE TO SHOWERS AND ISOLATED THUNDERSTORMS.

[cycloneye]

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
1152 AM AST SAT APR 24 2010

PRC007-019-021-025-029-031-037-039-043-045-047-053-061-063-073-077-
085-087-089-101-103-105-107-119-127-135-139-141-143-149-242000-
/O.EXT.TJSJ.FA.Y.0075.000000T0000Z-100424T2000Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAYAMON PR-CIALES PR-CAGUAS PR-COAMO PR-COROZAL PR-COMERIO PR-
AGUAS BUENAS PR-BARRANQUITAS PR-JUNCOS PR-JAYUYA PR-GURABO
PR-OROCOVIS PR-NARANJITO PR-MOROVIS PR-TOA ALTA PR-UTUADO
PR-VILLALBA PR-TRUJILLO ALTO PR-VEGA ALTA PR-LAS PIEDRAS PR-LUQUILLO
PR-NAGUABO PR-GUAYNABO PR-CEIBA PR-CANOVANAS PR-FAJARDO PR-CAROLINA
PR-SAN JUAN PR-LOIZA PR-RIO GRANDE PR-
1152 AM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* URBAN AND SMALL STREAM FLOOD ADVISORY
FOR THE FOLLOWING MUNICIPALITIES...

IN PUERTO RICO
BAYAMON...CIALES...CAGUAS...COAMO...COROZAL...COMERIO...AGUAS
BUENAS...BARRANQUITAS...JUNCOS...JAYUYA...GURABO...OROCOVIS...
NARANJITO...MOROVIS...TOA ALTA...UTUADO...VILLALBA...TRUJILLO
ALTO...VEGA ALTA...LAS PIEDRAS...LUQUILLO...NAGUABO...
GUAYNABO...CEIBA...CANOVANAS...FAJARDO...CAROLINA...SAN JUAN...
LOIZA AND RIO GRANDE

* UNTIL 400 PM AST

* AT 1148 AM AST...DOPPLER WEATHER RADAR CONTINUED TO INDICATE
SHOWERS AND ISOLATED THUNDERSTORMS...SOME WITH VERY HEAVY RAIN
AFFECTING MANY OF THESE MUNICIPALITIES. RADAR ESTIMATES AND U.S.G.S.
GAGES INDICATE THAT 1 TO 2 INCHES OF RAIN HAVE ALREADY FALLEN OVER
PARTS OF THE ADVISORY AREA...PARTICULARLY OVER RIO GRANDE...AND IT
CONTINUED TO RAIN. ALSO...EMERGENCY MANAGEMENT OFFICIALS REPORTED
FLOODING ALONG ROAD 620 IN VEGA ALTA. ADDITIONAL RAINFALL AMOUNTS OF
1 TO 2 INCHES ARE EXPECTED OVER MUCH OF THE ADVISORY THROUGH 4 PM.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CONTINUE TO CAUSE FLOODING
OF CREEKS AND STREAMS...ROADS...HIGHWAYS...STREETS...ROADSIDE
CULVERTS...UNDERPASSES AND OTHER LOW LYING SPOTS. IN ADDITION...THE
HEAVY RAINS WILL ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

[cycloneye]

FLASH FLOOD WARNING
PRC053-089-119-241800-
/O.NEW.TJSJ.FF.W.0018.100424T1604Z-100424T1800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1204 PM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITIES

IN PUERTO RICO
LUQUILLO
FAJARDO
RIO GRANDE

* THIS WARNING INCLUDES ALL RIVERS...STREAMS AND TRIBUTARIES WITHIN
THE WARNING AREA.

* UNTIL 200 PM AST

* AT 1159 AM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
TO INDICATE SHOWERS AND ISOLATED THUNDERSTORMS...SOME WITH VERY
HEAVY RAIN AFFECTING THE WARNING AREA. RADAR ESTIMATES AND U.S.G.S.
RAIN GAGES INDICATE THAT 2 TO 3 INCHES OF RAIN HAVE ALREADY FALLEN
OVER PARTS OF THE WARNING AREA...PARTICULARLY OVER RIO GRANDE...AND
IT CONTINUED TO RAIN. ALSO...U.S.G.S. RIVER GAGES INDICATE THAT THE
LEVELS OF RIO ESPIRITU SANTO AND RIO MAMEYES WERE AT WELL ABOVE
NORMAL LEVELS AND RISING STEADILY...AND WILL LIKELY FLOOD WITHIN THE
NEXT HOUR. IN ADDITION...ROCK AND MUDSLIDES ARE LIKELY OVER AREAS OF
STEEP TERRAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1834 6584 1843 6583 1842 6572 1839 6561
1831 6566 1829 6576

$$

BCS/AAS

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

[cycloneye]

The worse conditions as of right now are in the NE corner where there is the flash flood warning.

[cycloneye]

FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
152 PM AST SAT APR 24 2010

PRC017-091-250200-
/O.EXT.TJSJ.FA.W.0003.000000T0000Z-100425T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BARCELONETA PR-MANATI PR-
152 PM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLOOD WARNING FOR...
BARCELONETA MUNICIPALITY IN PUERTO RICO...
MANATI MUNICIPALITY IN PUERTO RICO...
THIS INCLUDES THE CITY OF BARCELONETA...

* UNTIL 1000 PM AST

* AT 145 PM AST USGS RIVER SENSOR ON THE RIO GRANDE DE MANATI AT
MANATI INDICATES THAT THE RIVER IS SLOWLY RECEDING BUT STILL REMAINS
ABOVE FLOOD STAGE...FLOOD STAGE IS 25.0 FEET...THE CURRENT RIVER
STAGE IS 29.00 FEET AND FALLING. SINCE THE RIVER REMAINS ABOVE FLOOD
STAGE...THE FLOOD WARNING WILL BE EXTENDED AT LEAST THROUGH 1000 PM
AST.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.

[cycloneye]

FLASH FLOOD WARNING
PRC053-089-119-242000-
/O.EXT.TJSJ.FF.W.0018.000000T0000Z-100424T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
159 PM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITIES

IN PUERTO RICO
LUQUILLO
FAJARDO
RIO GRANDE

* UNTIL 400 PM AST

* AT 149 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
TO INDICATE SHOWERS AND ISOLATED THUNDERSTORMS...SOME WITH VERY
HEAVY RAIN AFFECTING THE WARNING AREA...PARTICULARLY OVER RIO
GRANDE. ALSO...U.S.G.S. RIVER GAGES INDICATE THAT THE LEVELS OF RIO
ESPIRITU SANTO AND RIO MAMEYES WERE AT WELL ABOVE NORMAL LEVELS. IN
ADDITION...ROCK AND MUDSLIDES ARE LIKELY OVER AREAS OF STEEP
TERRAIN. SINCE THE SOILS ARE SATURATED AND THE RIVER LEVELS REMAIN
HIGH...ANY ADDITIONAL RAINFALL WILL CAUSE PROBLEMS IN THESE AREA SO
THE FLASH FLOOD WARNING HAS BEEN EXTENDED THROUGH AT LEAST 400 PM
AST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES. ADDITIONALLY...ROADS AND LANDS ALONG THE BANKS OF
CREEKS...STREAMS AND OTHER LOW LYING AND POOR DRAINAGE AREAS ARE
SUBJECT TO FLOODING. MOTORISTS ARE URGED TO AVOID ROADS WHERE
EXCESSIVE PONDING IS OBSERVED.

IN MOUNTAINOUS OR HILLY TERRAIN...THERE ARE HUNDREDS OF LOW WATER
CROSSINGS WHICH ARE POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT
ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND ALTERNATE ROUTES. IT
ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES
AWAY.

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 1834 6584 1843 6583 1842 6572 1839 6561
1831 6566 1829 6576

$$

AAS/BCS

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

[cycloneye]

I have been like Dave posting about tornado warnings ,I am posting all kinds of flood warnings

[cycloneye]

FLOOD ADVISORY
NATIONAL WEATHER SERVICE SAN JUAN PR
219 PM AST SAT APR 24 2010

PRC001-059-079-111-113-121-125-153-242115-
/O.NEW.TJSJ.FA.Y.0076.100424T1819Z-100424T2115Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ADJUNTAS PR-SABANA GRANDE PR-SAN GERMAN PR-YAUCO PR-GUAYANILLA PR-
PONCE PR-PENUELAS PR-LAJAS PR-
219 PM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED AN

* URBAN AND SMALL STREAM FLOOD ADVISORY
FOR THE FOLLOWING MUNICIPALITIES...

IN PUERTO RICO
ADJUNTAS...SABANA GRANDE...SAN GERMAN...YAUCO...GUAYANILLA...
PONCE...PENUELAS AND LAJAS

* UNTIL 515 PM AST

* AT 215 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
TO INDICATE SHOWERS AND ISOLATED THUNDERSTORMS...SOME WITH VERY
HEAVY RAIN AFFECTING THE WARNING AREA. AFTER CONSIDERABLE RAINFALL
FROM YESTERDAY...COMBINED WITH SATURATED SOILS...ANY SIGNIFICANT
RUNOFF WILL CAUSE FLOODING OF CREEKS AND STREAMS...ROADS AND
ROADSIDE CULVERTS UNTIL AT LEAST 515 PM AST. THE HEAVY RAINS COULD
ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

[msbee]

I have been like Dave posting about tornado warnings ,I am posting all kinds of flood warnings

that's true, Luis
Let's hope everyone takes notice and stays safe

[cycloneye]

They are watching this river in the San Juan metroflex that is rising.

[cycloneye]

Afternoon discussion by NWS San Juan

This afternoon discussion has good news on the horizon as things look to clear by late Sunday and drier air will come in to rule until midweek.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
252 PM AST SAT APR 24 2010

.SYNOPSIS...MID TO UPPER LEVEL SHORT WAVE AND ASSOCIATED JET
STREAK WILL MOVE ACROSS THE LOCAL AREA EARLY TONIGHT...BEFORE
LIFTING SLOWLY OUT TO THE NORTHEAST LATE TONIGHT SUNDAY. BEHIND
THIS FEATURE...A MID TO UPPER LEVEL RIDGE WILL GRADUALLY BUILD
ACROSS THE LOCAL AREA SUNDAY AND MONDAY AND SHOULD LINGER THROUGH
AT LEAST THE MIDDLE AND POSSIBLY END OF NEXT WEEK.

&&

.DISCUSSION...OLD FRONTAL TROUGH/CONVERGENCE ZONE AND ASSOCIATED
MOIST AND UNSTABLE AIR MASS WILL CONTINUE NEARLY STATIONARY
ACROSS THE LOCAL AREA TONIGHT THROUGH MOST OF SUNDAY AS WELL...
BEFORE A GRADUAL...OVERALL AIR MASS DRYING TAKES PLACE EARLY NEXT
WEEK. FOR TONIGHT...ABUNDANT MOISTURE AND INSTABILITY SHOULD
COMBINE WITH FAVORABLE DYNAMICS AND LOCAL EFFECTS TO MAINTAIN A
GOOD DEAL OF CLOUDINESS...SHOWERS AND ISOLATED THUNDERSTORMS OVER
PARTS OF THE LOCAL ISLANDS...ESPECIALLY THE INTERIOR...NORTHEAST
AND SOUTH SECTIONS OF PUERTO RICO. ADDITIONAL AREAS OF HEAVY
RAINFALL AND SOME LOCALIZED FLOODING ARE EXPECTED IN A FEW
LOCATIONS. FOR SUNDAY...BUILDING HIGH PRESSURE SHOULD BEGIN TO
CAP CONVECTION A BIT...BUT STILL SHOULD BE ENOUGH MOISTURE IN
COMBINATION WITH LOCAL EFFECTS...TO PRODUCE LOCALIZED
CLOUDINESS...SHOWERS AND POSSIBLY A COUPLE OF THUNDERSTORMS.
LOOKING AHEAD...FOR MONDAY AND TUESDAY AND PROBABLY WEDNESDAY AND
THURSDAY ALSO...COMBINATION OF MID TO UPPER LEVEL RIDGE AND AN
OVERALL DRIER AND MORE STABLE AIR MASS...SHOULD ALLOW FOR A
GENERALLY FAIR WEATHER PATTERN ACROSS THE FA. HOWEVER...LOCAL
EFFECTS WILL STILL BE ABLE TO PRODUCE SOME LOCALIZED CONVECTION
EACH DAY...PARTICULARLY ON WEDNESDAY AND THURSDAY AFTERNOONS.
ADDITIONALLY...THE SURFACE WIND FLOW IS EXPECTED TO BE SOUTHEAST
DURING THIS TIME AND IF ENOUGH SUNSHINE OCCURS...NORTH COASTAL
TEMPERATURES MAY ONCE AGAIN REACH THE LOWER 90S...AS ONCE AGAIN
INDICATED BY 12Z MEXJSJ GUIDANCE.

&&

.AVIATION...EXPECT PREVAILING VFR CONDITIONS ACROSS THE LOCAL
ISLANDS AND AT MOST LOCAL TAF SITES DURING THE NEXT 24 HOURS.
HOWEVER...BRIEF PERIODS OF MVFR OR EVEN IFR CONDITIONS AND
MOUNTAIN OBSCURATIONS ARE EXPECTED...ESPECIALLY ALONG THE
CORDILLERA CENTRAL AND ACROSS TJPS AND POSSIBLY TJMZ AND TJSJ DUE
TO SHOWERS AND ISOLATED THUNDERSTORMS. MOST SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO DISSIPATE BY 25/01Z. ALSO...BASED
ON VISIBLE SATELLITE DATA...A SMALL PLUME OF VOLCANIC ASH OR
STEAM IS MOVING MAINLY WEST FROM MONTSERRAT AND IS EXPECTED TO
REMAIN MAINLY SOUTH OF THE LOCAL ISLANDS AND TAF SITES TONIGHT.

&&

.MARINE...GENERALLY EXPECT WINDS OF 20 KNOTS OR LESS AND SEAS OF
8 FEET OR LESS ACROSS THE REGIONAL WATERS THROUGH TUESDAY. LONG
PERIOD...NORTH NORTHEAST SWELLS WILL BEGIN TO AFFECT THE LOCAL
ATLANTIC WATERS AND THE CARIBBEAN PASSAGES SUNDAY NIGHT AND WILL
LINGER THROUGH AT LEAST MONDAY NIGHT. SMALL CRAFT ADVISORIES MAY
BE REQUIRED FOR PARTS OF THE LOCAL ATLANTIC WATERS AND THE
CARIBBEAN PASSAGES BEGINNING SUNDAY NIGHT.

[cycloneye]

FLASH FLOOD WARNING
PRC143-145-242330-
/O.NEW.TJSJ.FF.W.0019.100424T2028Z-100424T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
428 PM AST SAT APR 24 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
THE FOLLOWING MUNICIPALITIES

IN PUERTO RICO
VEGA ALTA
VEGA BAJA

* UNTIL 730 PM AST

* AT 423 PM AST...LOCAL EMERGENCY MANAGEMENT OFFICIALS REPORTED THE
RIO CIBUCO IN VEGA ALTA WAS FLOODING NUMEROUS ROADWAYS...INCLUDING
ROAD NUMBER 620...647...676...675...AND 690. THIS FLOODING IS IN
RESPONSE TO VERY HEAVY RAINFALL NEAR THE HEADWATERS OF THE RIVER
EARLIER THIS AFTERNOON. EXPECT THIS SURGE IN WATER TO SLOWLY WORK
ITS WAY TO THE ATLANTIC OCEAN THROUGH THE EARLY EVENING
HOURS...EVENTUALLY RESULTING IN RAPID RISES AND FLASH FLOODING
DOWNSTREAM ALONG THE RIO CIBUCO IN VEGA BAJA AS WELL.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 1848 6634 1844 6633 1838 6633 1837 6637
1842 6637 1849 6640

$$

SR

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

[cycloneye]

Sad news about this rain event as Channel 11 Univision just reported that one man was killed as his car was carried away by a rough river in interior Puerto Rico.

[Macrocane]

That's bad especially after reding in every warning this message:DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

[Gustywind]

[cycloneye]

It looks like the worse is over about the rain event of the past 2 days as rivers and streams are going down and no new flood warnings have been issued.I am looking ahead to hurricane season in terms of how we are prepared to deal with bigger rain events that strong tropical waves may bring.This was only a frontal trough that turned stationary,imagine if something stronger parks over this island.To give an example,in 1985 a strong tropical wave was moving slowly from east to west and caused massive floodings and mudslides that caused the death of 85 people.And I have not mentioned those systems like storms and canes.

[Macrocane]

The warm minimum and maximum temperatures persisted today in Central America

Santa Ana, El Salvador
min:22.6°C/72.7°F (highest minimum of the year in that city) max:34.9°C/94.8°F

San Salvador, El Salvador
min:22.5°C/72.5°F (highest minimum of the year in that city) max:33°C/91°F

San Miguel, El Salvador
min:25.9°C/78.6°F max: 38°C/100.4°F

Belize city, Belize
min:25°C/77°F max:32°C/90°F

Guatemala city, Guatemala
min:17°C/63°F max:30°C/86°F

Tegucigalpa, Honduras
min:17°C/63°F max:31°C/88°F

Managua, Nicaragua
min:26°C/79°F max:36°C/97°F

San Jose, Costa Rica
min:21°C/70°F max: 31°C/88°F

Panama City, Panama
min:26°C/79°F max:34°C/93°F