Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 5, NWS Brownsville, TX

July 4, 2002Brooks County, Texas

NWS Brownsville, TX issued this flash flood warning at Jul 4, 2002, 7:52 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 4, 2002, 7:52 PM CDT (00:52 UTC)
Expired
Jul 4, 2002, 10:45 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 00:00Z, 0.9 hours before the alert went out and 125 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 00:00Z on 2002-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2421 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2002-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 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
2421 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
818 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
53 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 050052
FFWBRO
TXC047-050345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
749 PM CDT THU JUL 4 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 1045 PM CDT

* AT 746 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY   
RAINFALL 16 MILES SOUTH OF FALFURRIAS...MOVING NORTHWEST AT 15 MPH.  
DOPPLER RADAR ESTIMATED FIVE TO SIX INCHES OF RAIN HAVE FALLEN OVER 
CENTRAL BROOKS COUNTY.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH  
  FLOODING TO OCCUR. 

ADDITIONAL RAINFALL AMOUNTS ONE TO TWO INCHES ARE POSSIBLE IN THE 
WARNED AREA.

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. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

LAT...LON 2684 9844 2686 9812 2729 9818 2728 9845

MM
1 follow-up statement
000 
WGUS74 KBRO 050225
FFSBRO
TXC047-050345-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
915 PM CDT THU JUL 4 2002

THE FLASH FLOOD WARNING FOR CENTRAL AND WESTERN BROOKS COUNTY CONTINUES
UNTIL 10:45 PM...

AT 9:30 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS WITH VERY HEAVY RAIN OVER NORTHWEST BROOKS
COUNTY. DOPPLER RADAR ESTIMATED OVER 7 INCHES OF RAIN HAVE FALLEN OVER
RURAL AREAS OF BROOKS COUNTY.

THESE THUNDERSTORMS WERE MOVING NORTHWEST AT 15 MPH...AND WILL EXIT
BROOKS COUNTY AFTER 10:00 PM.

MOST FLASH FLOOD DEATHS OCCUR AT NIGHT.  BE ESPECIALLY CAUTIOUS AT
NIGHT SINCE IT IS HARDER TO RECOGNIZE THE DANGERS OF FLASH FLOODS.
USE CAUTION IN AND AROUND STREAMS...CREEKS OR DRAINAGE DITCHES.
TAKE THE SHORTEST PATH TO REACH HIGHER GROUND...BUT DO NOT DRIVE
THROUGH RISING WATER.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS CONCERNING THIS
DANGEROUS FLASH FLOOD EVENT.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 7:07 PM CDTSevere Thunderstorm WarningBROZapata53 min
Jul 4, 11:10 PM CDTFlash Flood WarningBROBrooks3 hr

Nearby

Flash Flood Warnings in Texas, 2002Every flash flood warning in 2002

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.