Flash Flood Warning 92, NWS JSJ

Issued

Aug 3, 2011, 9:40 AM CDT (14:40 UTC)

Expired

Aug 3, 2011, 2:30 PM CDT

In force

5 hr

Issued by

NWS JSJ

Area

Storm-based polygon

Flood severity

None

The San Juan radar (TJUA), 80 km from the middle of the area, began a volume at 14:43 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.

953 
WGCA52 TJSJ 031440
FFWSJU
PRC001-055-059-079-093-111-113-121-125-153-031630-
/O.NEW.TJSJ.FF.W.0092.110803T1440Z-110803T1630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1040 AM AST WED AUG 3 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     ADJUNTAS
     MARICAO
     SABANA GRANDE
     SAN GERMAN
     YAUCO
     GUAYANILLA
     GUANICA
     PONCE
     PENUELAS
     LAJAS

* UNTIL 1230 PM AST

* AT 1033 AM AST...DOPPLER RADAR AND SATELLITE IMAGERY INDICATED 
VERY INTENSE RAINFALL FALLING OVER SOUTH PUERTO RICO WITH RAINFALL 
RATES BETWEEN TWO AND THREE INCHES PER HOUR. ADDITIONAL HEAVY RAIN 
IS APPROACHING TO THE WARNED AREA FROM THE SOUTHEAST AND WILL CAUSE 
ADDITIONAL FLOODING. THIS WILL RESULT IN VERY SHARP RISES ON AREA 
RIVERS WITH ADDITIONAL FLASH FLOODING ACROSS SOUTH AND SOUTHWEST OF  
PUERTO RICO AT LEAST THROUGH 1230 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.

&&

LAT...LON 1815 6708 1819 6699 1817 6683 1822 6682
      1820 6669 1815 6667 1813 6658 1798 6656
      1795 6709

$$

ER

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

724 
WGCA52 TJSJ 031616
FFWSJU
PRC001-055-059-079-093-111-113-121-125-153-031930-
/O.EXT.TJSJ.FF.W.0092.000000T0000Z-110803T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN JUAN PR
1216 PM AST WED AUG 3 2011

THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  THE FOLLOWING MUNICIPALITIES

  IN PUERTO RICO
     ADJUNTAS
     MARICAO
     SABANA GRANDE
     SAN GERMAN
     YAUCO
     GUAYANILLA
     GUANICA
     PONCE
     PENUELAS
     LAJAS

* UNTIL 330 PM AST

* AT 1202 PM AST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
AN AREA OF HEAVY SHOWERS APPROACHING THE WARNED AREA. THE 
APPROACHING SHOWERS WILL AGGRAVATE FLOODING IN URBAN 
AREAS...ROADWAYS...AND AREA RIVERS.

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.

&&

LAT...LON 1815 6708 1819 6699 1817 6683 1822 6682
      1820 6669 1815 6667 1813 6658 1798 6656
      1795 6709

$$

JJA

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.