Flash Flood Warning 140, NWS JSJ

Issued

Sep 14, 2011, 9:55 AM CDT (14:55 UTC)

Expired

Sep 14, 2011, 3:31 PM CDT

In force

6 hr

Issued by

NWS JSJ

Area

Storm-based polygon

Flood severity

None

The San Juan radar (TJUA), 23 km from the middle of the area, began a volume at 14:56 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

004 
WGCA52 TJSJ 141455
FFWSJU
PRC009-019-021-041-045-051-105-135-137-141845-
/O.NEW.TJSJ.FF.W.0140.110914T1455Z-110914T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1055 AM AST WED SEP 14 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     BAYAMON
     CIDRA
     COMERIO
     AIBONITO
     BARRANQUITAS
     NARANJITO
     TOA ALTA
     DORADO
     TOA BAJA

* UNTIL 245 PM AST

* AT 1045 AM AST...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS 
WITH AREAS OF VERY HEAVY RAIN MOVING ACROSS THESE MUNICIPALITIES OF 
PUERTO RICO. EXCESSIVE RUNOFF FROM THIS RAINFALL...ON ALREADY 
SATURATED SOILS AND SWOLLEN RIVERS...WILL CAUSE ANOTHER ROUND OF 
FLOODING ON THE RIO DE LA PLATA FROM AIBONITO...COMERIO ON 
DOWNSTREAM TO TOA ALTA. EXPECT RAPID RISES ON THE DE LA PLATA AND 
ITS TRIBUTARIES AT LEAST UNTIL 245 PM AST.

FOR THE RIO DE LA PLATA AT COMERIO - COMP4
     FLOOD STAGE - 11 FEET.
     AT 1045 AM AST...THE USGS SENSOR INDICATED THE RIVER HAD RISEN  
     TO 9.47 FEET. MODERATE FLOODING IS FORECAST.

FOR THE RIO DE LA PLATA NEAR TOA ALTA - TOAP4
     FLOOD STAGE - 16 FEET.
      MODERATE FLOODING IS FORECAST.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

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.

&&

LAT...LON 1816 6632 1828 6623 1848 6630 1849 6625
      1826 6617 1817 6617 1814 6617 1812 6622

$$

AAS

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

106 
WGCA52 TJSJ 141756
FFWSJU
PRC009-019-021-041-045-051-105-135-137-142045-
/O.EXT.TJSJ.FF.W.0140.000000T0000Z-110914T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
156 PM AST WED SEP 14 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     BAYAMON
     CIDRA
     COMERIO
     AIBONITO
     BARRANQUITAS
     NARANJITO
     TOA ALTA
     DORADO
     TOA BAJA

* UNTIL 445 PM AST

* AT 145 PM AST...DOPPLER RADAR INDICATED THAT SHOWERS AND 
THUNDERSTORMS DIMINISHED ACROSS THESE MUNICIPALITIES. HOWEVER 
EXCESSIVE RUNOFF FROM THIS MORNING AND EARLY AFTERNOON RAINFALL .ON 
ALREADY SATURATED SOILS AND SWOLLEN RIVERS...WILL CONTINUE TO CAUSE 
ANOTHER ROUND OF FLOODING ON THE RIO DE LA PLATA FROM AIBONITO... 
COMERIO AND DOWNSTREAM TO TOA ALTA. EXPECT RISES ON RIO DE LA PLATA 
AND ITS TRIBUTARIES AT LEAST UNTIL 445 PM AST.

FOR THE RIO DE LA PLATA AT COMERIO - COMP4
     FLOOD STAGE - 11 FEET.
     AT 145 PM AST...THE USGS SENSOR INDICATED THE RIVER HAD         
     RISEN TO 1387 FEET. MODERATE FLOODING IS FORECAST.

FOR THE RIO DE LA PLATA NEAR NARANJITO - NAS4
     FLOOD STAGE - 16 FEET.
     AT 145 PM AST...THE USGS SENSOR INDICATED THE RIVER HAD         
     RISEN TO 1659 FEET.
     MODERATE FLOODING IS FORECAST.

LAT...LON 1816 6632 1828 6623 1848 6630 1849 6625
      1826 6617 1817 6617 1814 6617 1812 6622

$$

FIGUEROA

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

658 
WGCA72 TJSJ 142031
FFSSJU

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN JUAN PR
431 PM AST WED SEP 14 2011

PRC009-019-021-041-045-051-105-135-137-142040-
/O.CAN.TJSJ.FF.W.0140.000000T0000Z-110914T2045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BAYAMON PR-CIDRA PR-COMERIO PR-AIBONITO PR-BARRANQUITAS PR-
NARANJITO PR-TOA ALTA PR-DORADO PR-TOA BAJA PR-
431 PM AST WED SEP 14 2011

...THE FLASH FLOOD WARNING WILL BE SUPERCEDED BY A FLOOD WARNING 
SHORTLY....FOR TOA BAJA...DORADO...TOA 
ALTA...NARANJITO...BARRANQUITAS...AIBONITO...COMERIO...CIDRA AND 
BAYAMON MUNICIPALITIES...


LAT...LON 1816 6632 1828 6623 1848 6630 1849 6625
      1826 6617 1817 6617 1814 6617 1812 6622

$$

CASTRO

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

Flash Flood Warnings in Puerto Rico, 2011Every flash flood warning in 2011

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.