Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 172, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 21, 1997, 6:16 PM CDT for Bexar County, Comal 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, 6:16 PM CDT (23:16 UTC)
- Expired
- Jun 21, 1997, 9:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bexar County, TX, Comal County, TX
The radar
The Austin/San Antonio radar (KEWX), 37 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 235 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 212315 FFWSAT TXC029-091-220215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 616 PM CDT SAT JUN 21 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS EXTENDED THE FLASH FLOOD WARNING UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL TEXAS ...BEXAR COUNTY...COMAL COUNTY DOPPLER RADAR IS INDICATING A LINE OF HEAVY RAINS MOVING EAST ACROSS BEXAR AND COMAL COUNTIES. RAINFALL RATES ARE IN EXCESS OF 1 INCH AN HOUR. PREVIOUS RAINS HAVE ALREADY CLOSED FM 1863 IN COMAL COUNTY BETWEEN FM 3009 AND U.S.281. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. 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. &
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, 5:43 PM CDT, 33 minutes before
TXZ171>173-183>194-202>209-217>225-228-221030- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT SAT JUN 21 1997 ...FLASH FLOOD WATCH IN EFFECT THROUGH TONIGHT FOR ALL OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY EXCEPT FOR FAR WEST SECTIONS... ...FLOOD WARNING FOR THE NAVIDAD AND GUADALUPE RIVERS...AND SANDY CREEK IN COLORADO...WHARTON AND JACKSON COUNTIES... THERE IS STRONG POTENTIAL FOR HEAVY RAINFALL AND FLOODING OVER MUCH OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY TONIGHT. THE CHANCE OF RAIN REMAIN HIGH ON SUNDAY...THEREFORE THE FLASH FLOOD WATCH MAY NEED TO BE EXTENDED INTO SUNDAY. FLASH FLOOD WATCH IS IN EFFECT TONIGHT FOR THE FOLLOWING COUNTIES... ATASCOSA...BANDERA...BLANCO...BURNET...DIMMIT...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. A STRONG...BUT SLOW MOVING UPPER LEVEL LOW OVER CENTRAL TEXAS AND VERY WARM AND MOIST AIR OVER SOUTH TEXAS WILL COMBINE TO ALLOW FOR HEAVY RAINFALL AND FLASH THROUGH TONIGHT AND INTO SUNDAY. IN ADDITION TO THE HEAVY RAINFALL AND FLOODING POTENTIAL...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH SUNDAY...WITH THE POSSIBILITY OF DAMAGING WINDS AND HAIL. WIDESPREAD SHOWERS AND THUNDERSTORMS WILL PERSIST THROUGH SUNDAY WITH ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES LIKELY AND ISOLATED AMOUNTS OF 5 INCHES OR MORE POSSIBLE. MOTORISTS SHOULD AVOID FLOODED LOW WATER CROSSINGS AND DRIVE WITH EXTRA CAUTION...ESPECIALLY AT NIGHT WHEN HIGH WATER IS DIFFICULT TO SEE. PEOPLE SHOULD STAY AWAY FROM FLOODED CREEKS...STREAMS...AND RIVERS...AS RISES CAN BE SWIFT AND SUDDEN...AND BANKS CAN BE UNSTABLE. 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, 6:00 PM CDT, 16 minutes before
TXZ171>173-183>194-202>209-217>225-228-221030- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT SAT JUN 21 1997 ...FLASH FLOOD WATCH IN EFFECT THROUGH TONIGHT FOR ALL OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY EXCEPT FOR FAR WEST SECTIONS... ...FLOOD WARNING FOR THE NAVIDAD AND GUADALUPE RIVERS...AND SANDY CREEK IN COLORADO...WHARTON AND JACKSON COUNTIES... THERE IS STRONG POTENTIAL FOR HEAVY RAINFALL AND FLOODING OVER MUCH OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY TONIGHT. THE CHANCE OF RAIN REMAIN HIGH ON SUNDAY...THEREFORE THE FLASH FLOOD WATCH MAY NEED TO BE EXTENDED INTO SUNDAY. FLASH FLOOD WATCH IS IN EFFECT TONIGHT FOR THE FOLLOWING COUNTIES... ATASCOSA...BANDERA...BLANCO...BURNET...DIMMIT...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. A STRONG...BUT SLOW MOVING UPPER LEVEL LOW OVER CENTRAL TEXAS AND VERY WARM AND MOIST AIR OVER SOUTH TEXAS WILL COMBINE TO ALLOW FOR HEAVY RAINFALL AND FLASH THROUGH TONIGHT AND INTO SUNDAY. IN ADDITION TO THE HEAVY RAINFALL AND FLOODING POTENTIAL...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH SUNDAY...WITH THE POSSIBILITY OF DAMAGING WINDS AND HAIL. WIDESPREAD SHOWERS AND THUNDERSTORMS WILL PERSIST THROUGH SUNDAY WITH ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES LIKELY AND ISOLATED AMOUNTS OF 5 INCHES OR MORE POSSIBLE. MOTORISTS SHOULD AVOID FLOODED LOW WATER CROSSINGS AND DRIVE WITH EXTRA CAUTION...ESPECIALLY AT NIGHT WHEN HIGH WATER IS DIFFICULT TO SEE. PEOPLE SHOULD STAY AWAY FROM FLOODED CREEKS...STREAMS...AND RIVERS...AS RISES CAN BE SWIFT AND SUDDEN...AND BANKS CAN BE UNSTABLE. 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, 7:30 AM CDT | Flash Flood Warning | EWX | Atascosa | 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 |
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.