Alert archive / Texas / Flash Flood Warnings in 2004

Flash Flood Warning 60, NWS Austin/San Antonio, TX

April 10, 2004DeWitt County, Lavaca County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 10, 2004, 8:23 PM CDT for DeWitt 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: Apr 10, 2004, 8:23 PM CDT (01:23 UTC)
Expired: Apr 10, 2004, 11:30 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, Lavaca County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.4 hours before the alert went out and 171 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: 2170 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KEWX 110128
FFWSAT
TXC123-285-110430-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
823 PM CDT SAT APR 10 2004

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

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

* UNTIL 1130 PM CDT

* AT 823 PM...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN   
  FROM CUERO TO HALLETTSVILLE MOVING EAST AT 20 MPH.  RAINS OF 1 TO  
  2 INCHES HAVE FALLEN OVER SOME AREAS SO FAR THIS EVENING AND RAINS 
  ARE EXPECTED TO CONTINUE THROUGH THE EVENING.    

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT
QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY
IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.


LAT...LON 2903 9771 2887 9758 2936 9660 2962 9690
          2960 9716 2936 9722

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:04 PM CDT	Flash Flood Warning	EWX	Lavaca	56 min
Apr 10, 9:54 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	51 min
Apr 10, 10:38 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Guadalupe	67 min
Apr 10, 10:57 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio	63 min
Apr 10, 11:01 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	59 min
Apr 10, 11:29 PM CDT	Severe Thunderstorm Warning	EWX	Wilson	61 min
Apr 10, 11:58 PM CDT	Severe Thunderstorm Warning	EWX	Karnes	62 min
Apr 11, 12:48 AM CDT	Flash Flood Warning	EWX	DeWitt	3 hr
Apr 11, 1:02 AM CDT	Flash Flood Warning	EWX	Uvalde	3 hr
Apr 11, 1:17 AM CDT	Flash Flood Warning	EWX	Lavaca	3 hr
Apr 11, 1:44 AM CDT	Flash Flood Warning	EWX	Fayette	2 hr
Apr 11, 1:57 AM CDT	Flash Flood Warning	EWX	Bandera, Medina, Real	3 hr
Apr 11, 3:00 AM CDT	Flash Flood Warning	EWX	Kinney, Maverick	3 hr
Apr 11, 3:50 AM CDT	Flash Flood Warning	EWX	Uvalde	2 hr

Nearby

Flash Flood Warnings in Texas, 2004 Every flash flood warning in 2004

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.