Alert archive / Puerto Rico / Flash Flood Warnings in 2010

Flash Flood Warning 49, NWS JSJ

May 30, 2010

NWS JSJ issued this flash flood warning at May 30, 2010, 2:41 PM CDT. It was in force for 3 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 30, 2010, 2:41 PM CDT (19:41 UTC)
Expired
May 30, 2010, 5:45 PM CDT
In force
3 hr
Issued by
NWS JSJ
Area
Storm-based polygon
Flood severity
None

What was reported inside it

TimeReportWhereRemark
May 30, 4:10 PM CDTFLASH FLOODRio Grande, PRROAD 191 FLOODED DUE TO MAMEYES RIVER OUT OF ITS BANKS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The text

As transmitted, in the capitals the NWS used until 2016.

380 
WGCA52 TJSJ 301941
FFWSJU
PRC119-302245-
/O.NEW.TJSJ.FF.W.0049.100530T1941Z-100530T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
341 PM AST SUN MAY 30 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITY

  IN PUERTO RICO
     RIO GRANDE

* UNTIL 645 PM AST

* AT 340 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FOR HEAVY RAINFALL ACROSS RIO GRANDE...WHICH IS LEADING TO RAPID 
RISES IN THE MAMEYES RIVER AND ITS TRIBUTARIES. IN ADDITION... 
U.S.G.S. RIVER SENSORS INDICATED THAT THE LEVELS OF RIO MAMEYES WERE 
RISING RAPIDLY. 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 1828 6585 1831 6586 1843 6583 1840 6575
      1830 6580 1828 6583

$$

ER

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN
3 follow-up statements
083 
WGCA52 TJSJ 301945 CCA
FFWSJU
PRC119-302245-
/O.COR.TJSJ.FF.W.0049.100530T1941Z-100530T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE SAN JUAN PR
341 PM AST SUN MAY 30 2010

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITY

  IN PUERTO RICO
     RIO GRANDE

* UNTIL 645 PM AST

* AT 340 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
HEAVY RAINFALL ACROSS RIO GRANDE...WHICH IS LEADING TO RAPID RISES 
ON THE MAMEYES RIVER AND ITS TRIBUTARIES. IN ADDITION... U.S.G.S. 
RIVER SENSORS INDICATED THAT THE LEVELS OF RIO MAMEYES WERE RISING 
RAPIDLY. 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 1828 6585 1831 6586 1843 6583 1840 6575
      1830 6580 1828 6583

$$

ER

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN
001 
WGCA72 TJSJ 302154
FFSSJU

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

PRC119-302245-
/O.CON.TJSJ.FF.W.0049.000000T0000Z-100530T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIO GRANDE PR-
554 PM AST SUN MAY 30 2010

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM AST FOR RIO
GRANDE MUNICIPALITY...

AT 531 PM AST...THE PUBLIC REPORTED ROUTE 191 THAT GOES TO THE EL 
YUNQUE NATIONAL RAIN FOREST IS CLOSED DUE TO THE MAMEYES RIVER OUT 
OF ITS BANKS. HOWEVER...THE DOPPLER RADAR INDICATED THAT THE HEAVY 
RAIN WHICH AFFECTED THIS AREA HAD DISSIPATED OR MOVED AWAY. NO 
SIGNIFICANT ADDITIONAL RAINFALL IS EXPECTED ACROSS THESE AREAS AT 
THIS TIME.

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.

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

&&

LAT...LON 1828 6585 1831 6586 1843 6583 1840 6575
      1830 6580 1828 6583

$$

ER

ADDITIONAL INFORMATION CAN BE FOUND AT /USE LOWER CASE LETTERS/:
     HTTP://WWW.WEATHER.GOV/SANJUAN
058 
WGCA72 TJSJ 302240
FFSSJU

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

PRC119-302246-
/O.EXP.TJSJ.FF.W.0049.000000T0000Z-100530T2245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RIO GRANDE PR-
640 PM AST SUN MAY 30 2010

...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 PM AST FOR RIO GRANDE
MUNICIPALITY...

DOPPLER RADAR INDICATED THAT THE HEAVY RAIN WHICH AFFECTED THIS AREA
HAD DISSIPATED OR MOVED AWAY. NO SIGNIFICANT ADDITIONAL RAINFALL IS
EXPECTED ACROSS THESE AREAS AT THIS TIME.

RESIDENTS AND MOTORISTS ACROSS THESE AREAS SHOULD HOWEVER BE ALERT TO
PONDING OF WATER ON ROADWAYS AND ALLOW TIME FOR STREAMS...CREEKS AND
RIVERS TO RETURN TO NORMAL LEVELS.

LAT...LON 1828 6585 1831 6586 1843 6583 1840 6575
      1830 6580 1828 6583

$$

ER

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

The office that day

Everything else NWS JSJ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 7:02 PM CDTAreal Flood AdvisoryJSJ5 hr
May 29, 7:13 PM CDTFlash Flood WarningJSJ6 hr
May 29, 8:28 PM CDTAreal Flood AdvisoryJSJ3 hr
May 29, 11:02 PM CDTAreal Flood WarningJSJ6 hr
May 30, 1:11 PM CDTAreal Flood AdvisoryJSJ109 min
May 30, 2:40 PM CDTAreal Flood AdvisoryJSJ3 hr
May 30, 3:10 PM CDTFlash Flood WarningJSJ3 hr
May 30, 4:41 PM CDTAreal Flood AdvisoryJSJ2 hr

Nearby

Flash Flood Warnings in Puerto Rico, 2010Every flash flood warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive.