Alert archive / Texas / Flash Flood Warnings in 2003
Flash Flood Warning 4, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Feb 20, 2003, 1:25 PM CST for 9 counties in Texas. It was in force for 4 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
- Feb 20, 2003, 1:25 PM CST (19:25 UTC)
- Expired
- Feb 20, 2003, 5:30 PM CST
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Counties, with a storm outline in the text
Counties Bastrop County, TX, Blanco County, TX, Caldwell County, TX, Comal County, TX, Guadalupe County, TX, Hays County, TX, Lee County, TX, Travis County, TX, Williamson County, TX
The radar
The Austin/San Antonio radar (KEWX), 38 km from the middle of the area, began a volume at 19:26 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, 7.4 hours before the alert went out and 257 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
- 353 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 123 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS54 KEWX 201925
FFWSAT
TXC021-031-055-091-187-209-287-453-491-202330-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
125 PM CST THU FEB 20 2003
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED A
* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...
WILLIAMSON
TRAVIS
LEE
BLANCO
BASTROP
HAYS
CALDWELL
COMAL
GUADALUPE
* UNTIL 530 PM CST
* AT 125 PM...WEATHER SERVICE DOPPLER RADAR INDICATED SCATTERED
AREAS OF VERY HEAVY RAIN CONTINUED ACROSS THE WARNED COUNTIES.
THE HEAVIEST RAINS WERE FROM NEAR CANYON LAKE TO SOUTH OF SEGUIN.
RAINFALL RATES OF AROUND ONE INCH PER HOUR WERE INDICATED. THIS
RAIN IS FALLING OVER AREAS THAT HAVE ALREADY RECEIVED SIGNIFICANT
RAINFALL AND RUNOFF WILL BE RAPID. THE RAIN IS MOVING NORTHEAST AT
20 MPH.
SHERIFF...POLICE...AND EMERGENCY MANAGEMENT OFFICIALS REPORT
NUMEROUS TO WIDESPREAD ROAD CLOSINGS.
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 2983 9850 2942 9787 2969 9760 3031 9670
3092 9782
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 20, 6:44 AM CST | Severe Thunderstorm Warning | EWX | Bexar, Wilson | 46 min |
| Feb 20, 7:29 AM CST | Flash Flood Warning | EWX | Blanco, Comal, Hays, Kendall | 6 hr |
| Feb 20, 7:34 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 6 hr |
| Feb 20, 9:14 AM CST | Flash Flood Warning | EWX | Bastrop, Caldwell, Lee | 4 hr |
| Feb 20, 9:23 AM CST | Severe Thunderstorm Warning | EWX | Gonzales | 52 min |
| Feb 20, 11:15 AM CST | Severe Thunderstorm Warning | EWX | Lavaca | 45 min |
| Feb 20, 4:33 PM CST | Flash Flood Warning | EWX | Fayette, Gonzales | 57 min |
| Feb 20, 5:20 PM CST | Flash Flood Warning | EWX | Blanco, Caldwell, Comal, Guadalupe, Hays, Travis and 1 more | 3 hr |
| Feb 20, 5:25 PM CST | Flash Flood Warning | EWX | Bastrop, DeWitt, Fayette, Gonzales, Lavaca, Lee | 3 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.