Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 46, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 31, 2001, 8:20 AM 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 31, 2001, 8:20 AM CDT (13:20 UTC)
- Expired
- Aug 31, 2001, 11:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties DeWitt County, TX, Lavaca County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 1.3 hours before the alert went out and 350 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.
- Mixed-layer CAPE
- 409 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 311320 FFWSAT FFWSAT TXC123-285-311600- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 820 AM CDT FRI AUG 31 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... LAVACA DEWITT * UNTIL 1100 AM CDT * AT 820 AM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER DEWITT AND LAVACA COUNTIES...MOVING NORTHEAST AT 20 MPH. RAINFALL RATES OF 1 TO 2 INCHES CAN BE EXPECTED WITH THESE SHOWERS AS THEY SLOWLY TRACK ACROSS THE ALREADY SATURATED GROUND. 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. 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 2902 9765 2892 9728 2937 9666 2961 9697
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 1:55 AM CDT | Flash Flood Warning | EWX | DeWitt, Lavaca | 2 hr |
| Aug 31, 3:33 AM CDT | Flash Flood Warning | EWX | Gonzales | 3 hr |
| Aug 31, 4:00 AM CDT | Flash Flood Warning | EWX | DeWitt, Lavaca | 4 hr |
| Aug 31, 4:43 AM CDT | Flash Flood Warning | EWX | Bexar, Caldwell, Comal, Guadalupe, Hays | 3 hr |
| Aug 31, 6:28 AM CDT | Flash Flood Warning | EWX | Gonzales | 3 hr |
| Aug 31, 7:37 AM CDT | Flash Flood Warning | EWX | Karnes | 113 min |
| Aug 31, 7:41 AM CDT | Flash Flood Warning | EWX | Bexar, Comal, Hays, Travis | 2 hr |
| Aug 31, 8:32 AM CDT | Flash Flood Warning | EWX | Fayette | 2 hr |
| Aug 31, 9:25 AM CDT | Flash Flood Warning | EWX | Gonzales, Karnes | 3 hr |
| Aug 31, 10:55 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes, Lavaca | 2 hr |
| Aug 31, 12:50 PM CDT | Flash Flood Warning | EWX | DeWitt, Karnes, Lavaca | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
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.