Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 144, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1997, 7:30 AM CDT for Atascosa 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
- Jun 21, 1997, 7:30 AM CDT (12:30 UTC)
- Expired
- Jun 21, 1997, 10:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Atascosa County, TX
The radar
The Austin/San Antonio radar (KEWX), 102 km from the middle of the area, began a volume at 12:33 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, 0.5 hours before the alert went out and 174 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
- 3868 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 570 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 211230 FFWSAT TXC013-211530- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 730 AM CDT SAT JUN 21 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1030 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...ATASCOSA COUNTY AT 727 AM CDT...RADAR SHOWED AN AREA OF HEAVY RAIN FROM SHOWERS AND THUNDERSTORMS OVER ATASCOSA COUNTY...MOVING NORTH AT 10 MPH. THESE SHOWERS AND THUNDERSTORMS WILL PRODUCE PERIODS OF HEAVY RAIN OVER ATASCOSA COUNTY...CAUSING FLOODING AT LOW WATER CROSSINGS AND LOW LYING AREAS. 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. 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, Jun 21, 5:12 AM CDT, 2 hours 18 minutes before
TXZ171>173-183>194-202>209-217>225-228-222300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 513 AM CDT SAT JUN 21 1997 ...FLASH FLOOD WATCH IN EFFECT TODAY AND TONIGHT... THERE IS A RISK OF LOCALLY HEAVY RAINFALL OVER MOST OVER SOUTH CENTRAL TEXAS TODAY AND TONIGHT WHERE A FLASH FLOOD WATCH IS IN EFFECT. THE COUNTIES OF SOUTH CENTRAL TEXAS INCLUDED IN THE WATCH ARE... BANDERA...BLANCO...BURNET...GILLESPIE...KENDALL...KERR...LLANO... REAL...BASTROP...CALDWELL...FAYETTE...HAYS...LEE...TRAVIS... WILLIAMSON...ATASCOSA...BEXAR...COMAL...FRIO...GUADALUPE...MEDINA... UVALDE...WILSON...ZAVALA...DE WITT...GONZALES...KARNES AND LAVACA AN UPPER LEVEL LOW...SUB TROPICAL JET AND A WARM AND MOIST ATMOSPHERE OVER SOUTH TEXAS WILL COMBINE TO ALLOW FOR HEAVY RAINFALL AND FLASH FLOODING TODAY THROUGH TONIGHT. SHOWERS AND THUNDERSTORMS WILL BE PERSISTENT THROUGH TONIGHT WITH SCATTERED RAINFALL AMOUNTS OF 1 TO 2 INCHES POSSIBLE WITH ISOLATED AMOUNTS NEAR 4 INCHES. MOTORISTS SHOULD AVOID FLOODED LOW WATER CROSSINGS AND CHILDREN AND YOUNG ADULTS SHOULD STAY AWAY FROM FLOODED CREEKS AND STREAMS. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS...AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.
Special weather statement, Jun 21, 5:13 AM CDT, 2 hours 17 minutes before
TXZ171>173-183>194-202>209-217>225-228-222300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 513 AM CDT SAT JUN 21 1997 ...FLASH FLOOD WATCH IN EFFECT TODAY AND TONIGHT... THERE IS A RISK OF LOCALLY HEAVY RAINFALL OVER MOST OVER SOUTH CENTRAL TEXAS TODAY AND TONIGHT WHERE A FLASH FLOOD WATCH IS IN EFFECT. THE COUNTIES OF SOUTH CENTRAL TEXAS INCLUDED IN THE WATCH ARE... BANDERA...BLANCO...BURNET...GILLESPIE...KENDALL...KERR...LLANO... REAL...BASTROP...CALDWELL...FAYETTE...HAYS...LEE...TRAVIS... WILLIAMSON...ATASCOSA...BEXAR...COMAL...FRIO...GUADALUPE...MEDINA... UVALDE...WILSON...ZAVALA...DE WITT...GONZALES...KARNES AND LAVACA AN UPPER LEVEL LOW...SUB TROPICAL JET AND A WARM AND MOIST ATMOSPHERE OVER SOUTH TEXAS WILL COMBINE TO ALLOW FOR HEAVY RAINFALL AND FLASH FLOODING TODAY THROUGH TONIGHT. SHOWERS AND THUNDERSTORMS WILL BE PERSISTENT THROUGH TONIGHT WITH SCATTERED RAINFALL AMOUNTS OF 1 TO 2 INCHES POSSIBLE WITH ISOLATED AMOUNTS NEAR 4 INCHES. MOTORISTS SHOULD AVOID FLOODED LOW WATER CROSSINGS AND CHILDREN AND YOUNG ADULTS SHOULD STAY AWAY FROM FLOODED CREEKS AND STREAMS. NEARBY HAZARDOUS WEATHER OUTLOOKS INCLUDE: FOR SOUTHWEST TEXAS...FROM MIDLAND...LBBSPSMAF FOR THE CONCHO VALLEY...FROM SAN ANGELO...LBBSPSSJT FOR NORTH TEXAS...FROM FORT WORTH...FTWSPSFTW FOR SOUTHEAST TEXAS...FROM HOUSTON/GALVESTON...SATSPSHOU FOR COASTAL BEND/RIO GRANDE PLAINS...FROM CORPUS CHRISTI...SATSPSCRP THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS...AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 7:51 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 69 min |
| Jun 20, 8:57 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 63 min |
| Jun 21, 1:51 AM CDT | Flash Flood Warning | EWX | Kerr | 3 hr |
| Jun 21, 6:01 AM CDT | Flash Flood Warning | EWX | Frio | 3 hr |
| Jun 21, 7:45 AM CDT | Flash Flood Warning | EWX | Bexar | 3 hr |
| Jun 21, 9:01 AM CDT | Flash Flood Warning | EWX | Frio | 119 min |
| Jun 21, 9:33 AM CDT | Flash Flood Warning | EWX | Gonzales, Guadalupe, Wilson | 3 hr |
| Jun 21, 10:25 AM CDT | Flash Flood Warning | EWX | DeWitt, Karnes | 3 hr |
| Jun 21, 10:39 AM CDT | Flash Flood Warning | EWX | Bandera, Medina | 3 hr |
| Jun 21, 10:59 AM CDT | Flash Flood Warning | EWX | Caldwell | 3 hr |
| Jun 21, 11:16 AM CDT | Flash Flood Warning | EWX | Bastrop, Fayette, Lavaca | 3 hr |
| Jun 21, 11:16 AM CDT | Flash Flood Warning | EWX | Blanco, Comal, Hays, Travis | 3 hr |
| Jun 21, 11:16 AM CDT | Flash Flood Warning | EWX | Kendall | 3 hr |
| Jun 21, 11:38 AM CDT | Flash Flood Warning | EWX | Bandera, Bexar | 3 hr |
| Jun 21, 12:08 PM CDT | Flash Flood Warning | EWX | Lee, Williamson | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | Guadalupe | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | Gillespie | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | DeWitt | 3 hr |
| Jun 21, 1:25 PM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
| Jun 21, 2:07 PM CDT | Flash Flood Warning | EWX | Kendall, Kerr | 3 hr |
| Jun 21, 2:07 PM CDT | Flash Flood Warning | EWX | Lavaca | 3 hr |
| Jun 21, 3:20 PM CDT | Flash Flood Warning | EWX | Bexar, Medina | 3 hr |
| Jun 21, 3:20 PM CDT | Flash Flood Warning | EWX | Comal | 3 hr |
| Jun 21, 3:36 PM CDT | Flash Flood Warning | EWX | Karnes | 3 hr |
| Jun 21, 4:39 PM CDT | Flash Flood Warning | EWX | Guadalupe | 6 hr |
| Jun 21, 4:39 PM CDT | Flash Flood Warning | EWX | Bandera | 6 hr |
| Jun 21, 4:39 PM CDT | Flash Flood Warning | EWX | DeWitt | 6 hr |
| Jun 21, 5:09 PM CDT | Flash Flood Warning | EWX | Caldwell, Travis | 6 hr |
| Jun 21, 5:17 PM CDT | Flash Flood Warning | EWX | Bandera | 6 hr |
| Jun 21, 5:17 PM CDT | Flash Flood Warning | EWX | Lavaca | 6 hr |
| Jun 21, 5:42 PM CDT | Flash Flood Warning | EWX | Hays | 6 hr |
| Jun 21, 6:16 PM CDT | Flash Flood Warning | EWX | Bexar, Comal | 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; radar from the NEXRAD Level II archive.