Alert archive / Texas / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 55, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 25, 1997, 11:11 PM CDT for Maverick County, Texas. It was in force for 2 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 25, 1997, 11:11 PM CDT (04:11 UTC)
- Expired
- Apr 26, 1997, 1:15 AM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Maverick County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 26, 12:10 AM CDT | Hail 0.75 | El Indio, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 4.2 hours before the alert went out and 86 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
- 22 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 1669 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 379 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 260413 RRA SVRSAT TXC323-260615- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1111 PM CDT FRI APR 25 1997 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 115 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL TEXAS ...MAVERICK COUNTY AT 1112 PM CDT A SEVERE THUNDERSTOM WAS INDICATED 15 MILES SOUTHWEST OF EAGLE PASS MOVING TO THE EAST AT 40 MPH. DOPPLER RADAR INDICATED HAIL IN EXCESS OF GOLFBALL SIZE WAS POSSIBLE WITH THIS STORM. OTHER STORMS WERE INDICATED BEHIND THIS ONE AND WILL FOLLOW EVERY 30 MINUTES OF SO. PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT TO THE POSSIBILITY OF LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN ALSO OCCUR WITH SEVERE THUNDERSTORMS...FLOODING SMALL STREAMS...LOW AREAS...AND LOW WATER CROSSINGS.
What forecasters said that day
The local office's own words before this severe thunderstorm 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 25, 7:00 PM CDT, 4 hours 11 minutes before
TXZ171>173-188>194-204>208-260100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 700 PM CDT FRI APR 25 1997 THE TORNADO WATCH ISSUED FOR THE EASTERN HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS HAS BEEN CANCELLED. METROPOLITAN AREAS CLEARED FROM THE WATCH ARE AUSTIN AND SAN ANTONIO. COUNTIES CLEAR FROM THE WATCH INCLUDE LLANO... BURNET... TRAVIS... WILLIAMSON... LEE... GILLESPIE... BLANCO... HAYS... BASTROP... CALDWELL... MEDINA... BEXAR... KENDALL... COMAL... AND GUADALUPE. SHOWERS AND THUNDERSTORMS HAVE MOVED SOUTH OF THE AREA AS THE COLD FRONT ALSO MOVES SOUTH. HOWEVER...AS ANOTHER UPPER LEVEL DISTURBANCE APPROACHES...THERE IS A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS LATER TONIGHT. SOME COULD BE SEVERE WITH LOCALLY HEAVY RAINFALL. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Special weather statement, Apr 25, 7:03 PM CDT, 4 hours 8 minutes before
TXZ171>173-183>194-202>209-217>225-228-261115- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 703 PM CDT FRI APR 25 1997 ...TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM FOR PARTS OF SOUTH CENTRAL TEXAS... ...FLASH FLOOD WATCH IN EFFECT THROUGH TONIGHT FOR MOST OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY... ALTHOUGH THERE IS PRESENTLY A LULL IN THUNDERSTORM ACTIVITY ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY EARLY THIS EVENING...THE THREAT OF SEVERE WEATHER AND FLASH FLOODING IS FAR FROM OVER. A POWERFUL UPPER AIR SYSTEM NOW CENTERED JUST SOUTH OF THE ARIZONA-NEW MEXICO BORDER HAS INTERACTED WITH A SURFACE FRONTAL SYSTEM TO PRODUCE AREAS OF HEAVY RAIN AND SOME LARGE HAIL. AN IMPLUSE ASSOCIATED WITH THE UPPER SYSTEM WILL BE MOVING EASTWARD TONIGHT ACROSS SOUTH CENTRAL TEXAS PRODUCING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. THE THREAT OF SEVERE WEATHER AND FLASH FLOODING WILL PERSIST DURING THE DAY SATURDAY AND PERHAPS PEAK SATURDAY NIGHT AS UPPER SYSTEM SLOWLY APPROACHES WHILE A SURFACE FRONT REMAINS ACROSS THE REGION. SHOWER AND THUNDERSTORM ACTIVITY SHOULD START TO DIMINISH SUNDAY. ADDITIONAL RAINS THROUGH SATURDAY COULD TOTAL 3 TO 5 INCHES IN SPOTS. WITH THE GROUND NOW SATURATED IN MANY AREAS...THE ADDITIONAL RAINS MAY CAUSE FLOODING OR AGGREVATE FLOODING IN PROGRESS. RESIDENTS OF SOUTH CENTRAL TEXAS...INCLUDING THE EDWARDS PLATEAU AND HILL COUNTRY...SHOULD MONITOR THE LATEST FORECASTS AND ADVISORIES. THIS IS A POWERFUL STORM SYSTEM PRODUCING RAPID CHANGES IN THE WEATHER. BE PREPARED TO MOVE TO A PLACE OF SAFETY IF SEVERE WEATHER IS SIGHTED OR A WATCH OR WARNING IS ISSUED. THE NATIONAL WEATHER SERVICE WILL ADVISE YOU OF THE VERY LATEST DEVELOPING SEVERE WEATHER POTENTIAL VIA NOAA WEATHER RADIO... LOCAL TV... CABLE TV... RADIO... AND OUR INTERNET WEBSITE LOCATED AT WWW.SRH.NOAA.GOV.EWX THE HAZARDOUS WEATHER OUTLOOK WILL NORMALLY BE UPDATED BY MEANS OF THE ZONE FORECAST...SHORT TERM FORECASTS...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST HAZARDOUS WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER IS NO LONGER EXPECTED.
Special weather statement, Apr 25, 7:06 PM CDT, 4 hours 5 minutes before
TXZ171>173-188>194-204>208-260100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 700 PM CDT FRI APR 25 1997 THE TORNADO WATCH ISSUED FOR THE EASTERN HILL COUNTRY AND PARTS OF SOUTH CENTRAL TEXAS HAS BEEN CANCELLED. METROPOLITAN AREAS CLEARED FROM THE WATCH ARE AUSTIN AND SAN ANTONIO. COUNTIES CLEAR FROM THE WATCH INCLUDE LLANO... BURNET... TRAVIS... WILLIAMSON... LEE... GILLESPIE... BLANCO... HAYS... BASTROP... CALDWELL... MEDINA... BEXAR... KENDALL... COMAL... AND GUADALUPE. SHOWERS AND THUNDERSTORMS HAVE MOVED SOUTH OF THE AREA AS THE COLD FRONT ALSO MOVES SOUTH. HOWEVER...AS ANOTHER UPPER LEVEL DISTURBANCE APPROACHES...THERE IS A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS LATER TONIGHT. SOME COULD BE SEVERE WITH LOCALLY HEAVY RAINFALL. ADDITIONAL STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT.
Special weather statement, Apr 25, 7:07 PM CDT, 4 hours 4 minutes before
TXZ171>173-183>194-202>209-217>225-228-261115- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 703 PM CDT FRI APR 25 1997 ...TORNADO WATCH REMAINS IN EFFECT UNTIL 8 PM FOR PARTS OF SOUTH CENTRAL TEXAS... ...FLASH FLOOD WATCH IN EFFECT THROUGH TONIGHT FOR MOST OF SOUTH CENTRAL TEXAS AND THE HILL COUNTRY... ALTHOUGH THERE IS PRESENTLY A LULL IN THUNDERSTORM ACTIVITY ACROSS SOUTH CENTRAL TEXAS AND THE HILL COUNTRY EARLY THIS EVENING...THE THREAT OF SEVERE WEATHER AND FLASH FLOODING IS FAR FROM OVER. A POWERFUL UPPER AIR SYSTEM NOW CENTERED JUST SOUTH OF THE ARIZONA-NEW MEXICO BORDER HAS INTERACTED WITH A SURFACE FRONTAL SYSTEM TO PRODUCE AREAS OF HEAVY RAIN AND SOME LARGE HAIL. AN IMPLUSE ASSOCIATED WITH THE UPPER SYSTEM WILL BE MOVING EASTWARD TONIGHT ACROSS SOUTH CENTRAL TEXAS PRODUCING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. THE THREAT OF SEVERE WEATHER AND FLASH FLOODING WILL PERSIST DURING THE DAY SATURDAY AND PERHAPS PEAK SATURDAY NIGHT AS UPPER SYSTEM SLOWLY APPROACHES WHILE A SURFACE FRONT REMAINS ACROSS THE REGION. SHOWER AND THUNDERSTORM ACTIVITY SHOULD START TO DIMINISH SUNDAY. ADDITIONAL RAINS THROUGH SATURDAY COULD TOTAL 3 TO 5 INCHES IN SPOTS. WITH THE GROUND NOW SATURATED IN MANY AREAS...THE ADDITIONAL RAINS MAY CAUSE FLOODING OR AGGREVATE FLOODING IN PROGRESS. RESIDENTS OF SOUTH CENTRAL TEXAS...INCLUDING THE EDWARDS PLATEAU AND HILL COUNTRY...SHOULD MONITOR THE LATEST FORECASTS AND ADVISORIES. THIS IS A POWERFUL STORM SYSTEM PRODUCING RAPID CHANGES IN THE WEATHER. BE PREPARED TO MOVE TO A PLACE OF SAFETY IF SEVERE WEATHER IS SIGHTED OR A WATCH OR WARNING IS ISSUED. THE NATIONAL WEATHER SERVICE WILL ADVISE YOU OF THE VERY LATEST DEVELOPING SEVERE WEATHER POTENTIAL VIA NOAA WEATHER RADIO... LOCAL TV... CABLE TV... RADIO... AND OUR INTERNET WEBSITE LOCATED AT WWW.SRH.NOAA.GOV.EWX THE HAZARDOUS WEATHER OUTLOOK WILL NORMALLY BE UPDATED BY MEANS OF THE ZONE FORECAST...SHORT TERM FORECASTS...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNFORECAST HAZARDOUS WEATHER DEVELOPS OR IF FORECAST HAZARDOUS WEATHER IS NO LONGER EXPECTED.
Special weather statement, Apr 25, 8:42 PM CDT, 2 hours 29 minutes before
TXZ209-222>225-260745- SPECIAL WEATHER STATEMENTS (SOUTH TEXAS ZONES) NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 845 PM CDT FRI APR 25 1997 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 2AM CDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR A PORTION OF SOUTH CENTRAL TEXAS. THIS WATCH INCLUDES THE FOLLOWING COUNTIES: KARNES...LAVACA...FAYETTE...GONZALES AND DEWITT. THE SEVERE THUNDERSTORM WATCH REPLACES THE TORNADO WATCH WHICH EXPIRED AT 8 PM. A POWERFUL UPPER AIR SYSTEM CENTERED JUST SOUTH OF THE ARIZONA-NEW MEXICO BORDER IS INTERACTING WITH VERY UNSTABLE AIR WHICH COVERS IN PARTICULAR THE EASTERN AREAS OF SOUTH CENTRAL TEXAS. AN IMPULSE ASSOCIATED WITH THE UPPER SYSTEM WILL BE MOVING EASTWARD TONIGHT ACROSS SOUTH CENTRAL TEXAS PRODUCING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. ANY THUNDERSTORMS WHICH DO DEVELOP MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE WITH THUNDERSTORMS. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. PERSONS IN OR NEAR THE WATCH SHOULD MONITOR THE WEATHER CLOSELY AND LISTEN FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS. STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV... CABLE TV... AND RADIO FOR FURTHER INFORMATION.
Special weather statement, Apr 25, 8:45 PM CDT, 2 hours 26 minutes before
TXZ209-222>225-260745- SPECIAL WEATHER STATEMENTS (SOUTH TEXAS ZONES) NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 845 PM CDT FRI APR 25 1997 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 2AM CDT... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR A PORTION OF SOUTH CENTRAL TEXAS. THIS WATCH INCLUDES THE FOLLOWING COUNTIES: KARNES...LAVACA...FAYETTE...GONZALES AND DEWITT. THE SEVERE THUNDERSTORM WATCH REPLACES THE TORNADO WATCH WHICH EXPIRED AT 8 PM. A POWERFUL UPPER AIR SYSTEM CENTERED JUST SOUTH OF THE ARIZONA-NEW MEXICO BORDER IS INTERACTING WITH VERY UNSTABLE AIR WHICH COVERS IN PARTICULAR THE EASTERN AREAS OF SOUTH CENTRAL TEXAS. AN IMPULSE ASSOCIATED WITH THE UPPER SYSTEM WILL BE MOVING EASTWARD TONIGHT ACROSS SOUTH CENTRAL TEXAS PRODUCING ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. ANY THUNDERSTORMS WHICH DO DEVELOP MAY BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS. LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE WITH THUNDERSTORMS. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. PERSONS IN OR NEAR THE WATCH SHOULD MONITOR THE WEATHER CLOSELY AND LISTEN FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS. STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV... CABLE TV... AND RADIO FOR FURTHER INFORMATION.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 9:56 PM CDT | Flash Flood Warning | EWX | Val Verde | 3 hr |
| Apr 25, 11:04 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Real | 56 min |
| Apr 25, 11:50 PM CDT | Flash Flood Warning | EWX | Uvalde | 115 min |
| Apr 25, 11:50 PM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 115 min |
| Apr 25, 11:54 PM CDT | Severe Thunderstorm Warning | EWX | Kerr | 66 min |
| Apr 26, 12:53 AM CDT | Flash Flood Warning | EWX | Bandera | 2 hr |
| Apr 26, 1:11 AM CDT | Flash Flood Warning | EWX | Dimmit | 2 hr |
| Apr 26, 1:11 AM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 2 hr |
| Apr 26, 1:25 AM CDT | Flash Flood Warning | EWX | Gillespie, Kerr | 65 min |
| Apr 26, 1:25 AM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Kerr | 65 min |
| Apr 26, 2:55 AM CDT | Severe Thunderstorm Warning | EWX | Atascosa | 65 min |
| Apr 26, 3:12 AM CDT | Flash Flood Warning | EWX | Bandera | 3 hr |
| Apr 26, 5:03 AM CDT | Flash Flood Warning | EWX | Hays, Travis | 3 hr |
| Apr 26, 5:43 AM CDT | Flash Flood Warning | EWX | Williamson | 3 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 1997Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.