Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 9, NWS Brownsville, TX

July 29, 2003Brooks County, Texas

NWS Brownsville, TX issued this flash flood warning at Jul 29, 2003, 5:51 PM CDT for Brooks County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 29, 2003, 5:51 PM CDT (22:51 UTC)
Expired
Jul 29, 2003, 9:00 PM CDT
In force
3 hr
Issued by
NWS Brownsville, TX
Area
Counties, with a storm outline in the text

County Brooks County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.9 hours before the alert went out and 120 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2003-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3017 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2003-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
3017 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
-4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KBRO 292255
FFWBRO
TXC047-300200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
551 PM CDT TUE JUL 29 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL BROOKS COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 900 PM CDT

* AT 550 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS CENTRAL BROOKS       
  COUNTY...DRIFTING SLOWLY NORTH. DOPPLER RADAR ESTIMATED FROM 2 TO  
  4 INCHES OF RAINFALL HAS BEEN RECEIVED IN THIS AREA. THIS AREA WAS 
  INUNDATED WITH 4 TO 6 INCHES OF RAINFALL YESTERDAY...AND LITTLE    
  ADDITIONAL RAINFALL IS NEEDED TO CREATE FLOODING.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO   
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE                         
  FLOODING INCLUDE...FALFURRIAS AND ENCINO.

ADDITIONAL RAINFALL AMOUNTS OF 2 INCHES ARE POSSIBLE IN THE WARNED 
AREA.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

LAT...LON 2686 9839 2687 9807 2732 9812 2731 9840

$$

PHILO
1 follow-up statement
000 
WGUS74 KBRO 300006
FFSBRO
TXC047-300100-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
705 PM CDT TUE JUL 29 2003

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR BROOKS COUNTY 
UNTIL 9 PM CDT HAS BEEN CANCELED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN 
OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. 
THEREFORE...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR BROOKS 
COUNTY UNTIL 9 PM CDT HAS BEEN CANCELED.

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH 
VERY HEAVY RAINFALL HAVE MOVED NORTH AND WEST OF BROOKS COUNTY NOW. 
SOME LINGERING SHOWERS WILL ONLY BRING LIGHT RAINS TO THE PREVIOUSLY 
WARNED AREA. DOPPLER RADAR ESTIMATED FROM 2 TO 3 INCHES OF RAINFALL 
WAS RECEIVED IN A LARGE AREA OF BROOKS COUNTY THIS AFTERNOON AND 
EVENING. THIS AREA WAS INUNDATED WITH 4 TO 6 INCHES OF RAINFALL 
YESTERDAY...AND THIS EXCESSIVE RAINFALL HAS CAUSED SOME FLOODING TO 
OCCUR...ESPECIALLY ALONG SMALL STREAMS AND NEAR LOW WATER CROSSINGS. 

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS 
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. 
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO 
ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR TELEVISION  
FOR THE LATEST WEATHER INFORMATION.

LAT...LON 2726 9806 2685 9806 2684 9841 2728 9845

$$

PHILO

The office that day

Everything else NWS Brownsville, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 5:50 PM CDTSevere Thunderstorm WarningBROBrooks55 min

Nearby

Flash Flood Warnings in Texas, 2003Every flash flood warning in 2003

Sources

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