Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 26, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Apr 4, 1997, 9:24 AM CST for Travis County, Williamson 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 4, 1997, 9:24 AM CST (15:24 UTC)
- Expired
- Apr 4, 1997, 12:00 PM CST
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Travis County, TX, Williamson County, TX
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 3.4 hours before the alert went out and 309 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
- 714 J/kg
- Mixed-layer CIN
- -179 J/kg
- Mixed-layer LCL
- 920 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 174 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 3.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 041526 FFWSAT TXC453-491-041800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 924 AM CST FRI APR 4 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1200 NOON CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...TRAVIS COUNTY...WILLIAMSON COUNTY A FLASH FLOOD WARNING FOR WILLIAMSON AND TRAVIS COUNTIES...INCLUDING THE THE CITY OF AUSTIN...HAS BEEN EXTENED UNTIL 12 NOON. ALTHOUGH THE THUNDERSTORMS AND HEAVY RAIN HAVE MOVED NORTHWARD OUT OF THE AREA... RUNOFF FROM HEAVY RAINS DURING THE NIGHT AND EARLY MORNING CONTINUES TO CAUSE FLOODING PROBLEMS. IN ADDITION...SHOWERS AND THUNDERSTORMS WERE DEVELOPING OVER THE EASTERN HILL COUNTRY AND MOVING NORTHEASTWARD...SO THE THREAT OF HEAVY RAIN WILL CONTINUE AS THE STORMS DEVELOP. AVOID ALREADY FLOODED AREAS. TRAVELERS SHOULD NOT ATTEMPT TO CROSS FLOODED ROADS. IF YOUR VEHICLE STALLS...LEAVE IT AND MOVE IMMEDIATELY TO HIGHER GROUND IF YOU CAN DO SO SAFELY. FLOOD PRONE URBAN AREAS FILL WITH WATER QUICKLY. CLOGGED STORM DRAINS MAY CAUSE OTHER AREAS TO FLOOD. DO NOT DRIVE THROUGH FLOOD WATERS AND STAY" AWAY FROM STORM DRAINS.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Apr 4, 7:00 AM CST, 2 hours 24 minutes before
TXZ171>173-183>194-202>209-217>225-228-051200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 700 AM CST FRI APR 4 1997 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WATCH TODAY INTO THIS EVENING FOR ALL OF THE HILL COUNTRY AND SOUTH CENTRAL TEXAS. ...FLASH FLOOD WARNING IN EFFECT FOR LAVACA COUNTY UNTIL 845 AM... ...FLASH FLOOD WARNINGS FOR TRAVIS..BLANCO AND WILLIAMSON COUNTIES TIL 930 AM... ...FLASH FLOOD WARNING FOR KENDALL COUNTY TIL 945 AM... AN INTENSE UPPER LEVEL STORM SYSTEM MOVING INTO WEST TEXAS TODAY WILL TRIGGER NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE REGION. AVERAGE RAIN TOTALS IN THE REGION COULD AMOUNT TO BETWEEN 2 AND 3 INCHES BY THE TIME THE EVENT ENDS THIS EVENING. IN ADDITIONAL..THE UPPER LEVELS WILL RAPIDLY DESTABILIZE THIS AFTERNOON WITH SCATTERED TO NUMEROUS THUNDERSTORMS DEVELOPING ALONG A DRY LINE WHICH WILL PUSH ACROSS THE AREA THIS AFTERNOON AND EVENING. THESE STORMS WILL LIKELY EXCEED SEVERE LIMITS WITH LARGE HAIL AND DAMAGING THUNDERSTORM WINDS. AREAS WET FROM RECENT HEAVY RAINS ARE AT PRIME RISK OF FLOODING IF HEAVY RAIN DEVELOPS. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECASTS...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST HAZARDOUS WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER NO LONGER IS EXPECTED.
Special weather statement, Apr 4, 7:01 AM CST, 2 hours 23 minutes before
TXZ171>173-183>194-202>209-217>225-228-051200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 700 AM CST FRI APR 4 1997 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WATCH TODAY INTO THIS EVENING FOR ALL OF THE HILL COUNTRY AND SOUTH CENTRAL TEXAS. ...FLASH FLOOD WARNING IN EFFECT FOR LAVACA COUNTY UNTIL 845 AM... ...FLASH FLOOD WARNINGS FOR TRAVIS..BLANCO AND WILLIAMSON COUNTIES TIL 930 AM... ...FLASH FLOOD WARNING FOR KENDALL COUNTY TIL 945 AM... AN INTENSE UPPER LEVEL STORM SYSTEM MOVING INTO WEST TEXAS TODAY WILL TRIGGER NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE REGION. AVERAGE RAIN TOTALS IN THE REGION COULD AMOUNT TO BETWEEN 2 AND 3 INCHES BY THE TIME THE EVENT ENDS THIS EVENING. IN ADDITIONAL..THE UPPER LEVELS WILL RAPIDLY DESTABILIZE THIS AFTERNOON WITH SCATTERED TO NUMEROUS THUNDERSTORMS DEVELOPING ALONG A DRY LINE WHICH WILL PUSH ACROSS THE AREA THIS AFTERNOON AND EVENING. THESE STORMS WILL LIKELY EXCEED SEVERE LIMITS WITH LARGE HAIL AND DAMAGING THUNDERSTORM WINDS. AREAS WET FROM RECENT HEAVY RAINS ARE AT PRIME RISK OF FLOODING IF HEAVY RAIN DEVELOPS. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECASTS...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST HAZARDOUS WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER NO LONGER IS EXPECTED.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 8:33 PM CST | Flash Flood Warning | EWX | Dimmit | 42 min |
| Apr 3, 8:33 PM CST | Severe Thunderstorm Warning | EWX | Dimmit | 42 min |
| Apr 3, 9:18 PM CST | Severe Thunderstorm Warning | EWX | Medina, Zavala | 57 min |
| Apr 3, 10:36 PM CST | Flash Flood Warning | EWX | Gillespie | 69 min |
| Apr 3, 10:47 PM CST | Flash Flood Warning | EWX | Kerr | 58 min |
| Apr 3, 11:10 PM CST | Severe Thunderstorm Warning | EWX | Bexar | 65 min |
| Apr 3, 11:32 PM CST | Severe Thunderstorm Warning | EWX | Comal | 58 min |
| Apr 3, 11:55 PM CST | Severe Thunderstorm Warning | EWX | Hays | 65 min |
| Apr 4, 12:25 AM CST | Flash Flood Warning | EWX | Williamson | 65 min |
| Apr 4, 12:25 AM CST | Severe Thunderstorm Warning | EWX | Williamson | 65 min |
| Apr 4, 12:43 AM CST | Severe Thunderstorm Warning | EWX | Hays | 62 min |
| Apr 4, 1:17 AM CST | Flash Flood Warning | EWX | DeWitt, Lavaca | 3 hr |
| Apr 4, 1:34 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 116 min |
| Apr 4, 5:36 AM CST | Flash Flood Warning | EWX | Lavaca | 3 hr |
| Apr 4, 6:23 AM CST | Flash Flood Warning | EWX | Travis, Williamson | 3 hr |
| Apr 4, 6:31 AM CST | Flash Flood Warning | EWX | Blanco | 3 hr |
| Apr 4, 6:43 AM CST | Flash Flood Warning | EWX | Kendall | 3 hr |
| Apr 4, 10:12 AM CST | Flash Flood Warning | EWX | DeWitt | 2 hr |
| Apr 4, 11:30 AM CST | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| Apr 4, 2:34 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 56 min |
| Apr 4, 2:40 PM CST | Severe Thunderstorm Warning | EWX | Real | 65 min |
| Apr 4, 3:00 PM CST | Flash Flood Warning | EWX | Real | 2 hr |
| Apr 4, 3:25 PM CST | Flash Flood Warning | EWX | Bandera | 65 min |
| Apr 4, 3:25 PM CST | Severe Thunderstorm Warning | EWX | Bandera | 65 min |
| Apr 4, 3:32 PM CST | Flash Flood Warning | EWX | Uvalde | 58 min |
| Apr 4, 3:32 PM CST | Severe Thunderstorm Warning | EWX | Uvalde | 58 min |
| Apr 4, 3:53 PM CST | Flash Flood Warning | EWX | Kerr | 2 hr |
| Apr 4, 4:24 PM CST | Flash Flood Warning | EWX | Bandera | 2 hr |
| Apr 4, 4:34 PM CST | Severe Thunderstorm Warning | EWX | Medina | 56 min |
| Apr 4, 5:11 PM CST | Severe Thunderstorm Warning | EWX | Bexar, Kendall | 79 min |
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.