Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 46, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 25, 1997, 5:16 PM CDT for 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 counties it named.
The facts
- Issued
- Apr 25, 1997, 5:16 PM CDT (22:16 UTC)
- Expired
- Apr 25, 1997, 8:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Lavaca County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 10.3 hours before the alert went out and 188 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
- 2699 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 493 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 281 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 13.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 252219 FFWSAT TXC285-260115- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 516 PM CDT FRI APR 25 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...LAVACA COUNTY SHOWERS AND THUNDERSTORMS WITH HEAVY RAINFALL WERE DEVELOPING OVER LAVACA COUNTY. DOPPLER RADAR ESTIMATED RAINFALL RATES OF UP TO ONE INCH PER HOUR WITH THE STRONGER STORMS. THESE STORMS WILL CONTINUE OVER THE COUNTY FOR THE NEXT COUPLE OF HOURS WITH SOME AREAS RECIEVING 2 TO 4 INCHES OF ADDITIONAL RAIN. INDIVIDUAL STORMS WERE MOVING TOWARDS THE NORTHEAST AT 30 MPH. MORE STORMS WERE DEVELOPING TO THE SOUTH OF LAVACA COUNTY MOVING NORTHWARD. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT TO ESCAPE RISING WATER DURING THREATENING RAINS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 8:33 AM CDT | Flash Flood Warning | EWX | Val Verde | 117 min |
| Apr 25, 10:20 AM CDT | Flash Flood Warning | EWX | Edwards | 115 min |
| Apr 25, 11:11 AM CDT | Severe Thunderstorm Warning | EWX | Blanco | 64 min |
| Apr 25, 11:17 AM CDT | Severe Thunderstorm Warning | EWX | Burnet | 58 min |
| Apr 25, 11:52 AM CDT | Flash Flood Warning | EWX | Blanco, Burnet, Llano | 4 hr |
| Apr 25, 1:10 PM CDT | Flash Flood Warning | EWX | Gillespie | 6 hr |
| Apr 25, 1:53 PM CDT | Severe Thunderstorm Warning | EWX | Caldwell | 67 min |
| Apr 25, 2:30 PM CDT | Severe Thunderstorm Warning | EWX | Bexar | 60 min |
| Apr 25, 2:41 PM CDT | Flash Flood Warning | EWX | Bastrop, Caldwell | 4 hr |
| Apr 25, 2:47 PM CDT | Flash Flood Warning | EWX | Travis, Williamson | 4 hr |
| Apr 25, 3:24 PM CDT | Flash Flood Warning | EWX | Fayette | 4 hr |
| Apr 25, 3:59 PM CDT | Flash Flood Warning | EWX | Gonzales | 3 hr |
Nearby
Flash Flood Warnings in Texas, 1997Every flash flood warning in 1997
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.