Alert archive / Texas / Flash Flood Warnings in 2003

Flash Flood Warning 76, NWS Austin/San Antonio, TX

September 3, 2003DeWitt County, Fayette County, Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Sep 3, 2003, 1:21 PM CDT for DeWitt County, Fayette County, Lavaca 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
Sep 3, 2003, 1:21 PM CDT (18:21 UTC)
Expired
Sep 3, 2003, 4:15 PM CDT
In force
3 hr
Issued by
NWS Austin/San Antonio, TX
Area
Counties, with a storm outline in the text

Counties DeWitt County, TX, Fayette County, TX, Lavaca County, TX

The radar

The Austin/San Antonio radar (KEWX), 90 km from the middle of the area, began a volume at 18:22 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.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 6.4 hours before the alert went out and 190 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 2003-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2682 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 12:00Z on 2003-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 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
2682 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
614 m above ground
0-6 km bulk shear
1 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
-15 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 KEWX 031823
FFWSAT
TXC123-149-285-032115-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
121 PM CDT WED SEP 3 2003

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
  FAYETTE
  LAVACA
  DEWITT

* UNTIL 415 PM CDT

* AT 121 PM...WEATHER SERVICE DOPPLER RADAR INDICATED NUMEROUS 
  THUNDERSTORMS OVER THE WARNED AREA...MOVING NORTHEAST AT 5 MPH.
  THESE SLOW MOVING THUNDERSTORMS WILL PRODUCE HEAVY RAINFALL 
  AMOUNTS OF 2 TO 3 INCHES OVER AREAS THAT ARE ALREADY SATURATED 
  FROM PREVIOUS RAINS.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH 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.


LAT...LON 2900 9772 2884 9757 2895 9742 2933 9676
          2945 9673 2963 9689 2998 9663 3013 9684
          2980 9726 2963 9713 2940 9719

$$
1 follow-up statement
000 
WGUS74 KEWX 031917
FFSSAT
TXC123-149-285-032115-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
217 PM CDT WED SEP 3 2003

...A FLASH FLOOD WARNING CONTINUES FOR FAYETTE...LAVACA AND DEWITT
COUNTIES UNTIL 415 PM CDT...

AT 217 PM...DOPPLER RADAR INDICATED NUMEROUS SLOW MOVING 
THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL ACROSS THE WARNED AREA. 
RADAR ESTIMATES SUGGESTS OVER 3 INCHES OF RAIN HAS ALREADY FALLEN 
OVER WESTERN AND SOUTHEASTERN DEWITT COUNTY...WESTERN LAVACA 
COUNTY...AND EASTERN FAYETTE COUNTY. 

SOILS WERE ALREADY SATURATED FROM PREVIOUS HEAVY RAINS...SO THIS 
ADDITIONAL HEAVY RAINFALL WILL QUICKLY BECOME RUNOFF. THROUGH 3 
PM...THE THREAT OF FLASH FLOODING IS BE CONCENTRATED AROUND THE   
COMMUNITIES NORDHEIM...YORKTOWN...YOAKUM...HALLETSVILLE... 
SCHULENBURG...AND LAGRANGE. TRAVEL IN THESE AREAS IS DISCOURAGED.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD.
VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO
HIGHER GROUND. STAY TUNED TO LOCAL MEDIA OUTLETS FOR THE LATEST
WEATHER INFORMATION.

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 3, 11:54 AM CDTFlash Flood WarningEWXAtascosa, Karnes, Wilson3 hr
Sep 3, 12:56 PM CDTFlash Flood WarningEWXBexar3 hr

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; radar from the NEXRAD Level II archive.