Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 46, NWS Brownsville, TX

October 12, 2003Brooks County, Texas

NWS Brownsville, TX issued this flash flood warning at Oct 12, 2003, 6:08 AM 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: Oct 12, 2003, 6:08 AM CDT (11:08 UTC)
Expired: Oct 12, 2003, 9:30 AM 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, 11.1 hours before the alert went out and 111 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2081 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 608 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KBRO 121109
FFWBRO
TXC047-121430-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
608 AM CDT SUN OCT 12 2003

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

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

* UNTIL 930 AM CDT

* AT 607 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.   
  DOPPLER RADAR ESTIMATED RAINFALL AT THE RATE OF TWO TO TWO AND A 
  HALF INCH PER HOUR.

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING
  INCLUDE...FALFURRIAS AND ENCINO.

THUNDERSTORM DEVELOPMENT SOUTH OF BROOKS COUNTY WILL BE MOVING OVER 
THE REGION DURING THE MORNING...BRINGING ADDITIONAL HEAVY RAINFALL.

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.

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.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
BROWNSVILLE.

LAT...LON 2724 9801 2680 9801 2680 9842 2726 9844

$$

PHILO

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 1:58 AM CDT	Flash Flood Warning	BRO	Jim Hogg, Starr, Zapata	3 hr
Oct 12, 3:19 AM CDT	Flash Flood Warning	BRO	Brooks	3 hr
Oct 12, 4:48 AM CDT	Flash Flood Warning	BRO	Jim Hogg, Starr, Zapata	3 hr
Oct 12, 5:20 AM CDT	Flash Flood Warning	BRO	Hidalgo	3 hr
Oct 12, 5:23 AM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	37 min
Oct 12, 6:00 AM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	45 min
Oct 12, 7:29 AM CDT	Severe Thunderstorm Warning	BRO	Hidalgo	46 min
Oct 12, 7:38 AM CDT	Tornado Warning	BRO	Hidalgo	52 min
Oct 12, 8:10 AM CDT	Flash Flood Warning	BRO	Brooks, Hidalgo, Jim Hogg, Starr, Zapata	3 hr
Oct 12, 8:51 AM CDT	Severe Thunderstorm Warning	BRO	Brooks, Kenedy	39 min
Oct 12, 9:52 AM CDT	Flash Flood Warning	BRO	Kenedy, Willacy	3 hr
Oct 12, 10:21 AM CDT	Flash Flood Warning	BRO	Cameron	3 hr
Oct 12, 1:34 PM CDT	Flash Flood Warning	BRO	Cameron	3 hr

Nearby

Flash Flood Warnings in Texas, 2003 Every 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.