Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 58, NWS Austin/San Antonio, TX

April 26, 1997Dimmit County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 26, 1997, 1:11 AM CDT for Dimmit County, Texas. It was in force for 2 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 26, 1997, 1:11 AM CDT (06:11 UTC)
Expired: Apr 26, 1997, 3:15 AM CDT
In force: 2 hr
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Dimmit County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.2 hours before the alert went out and 149 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, 8:45 PM CDT, 4 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.

Local storm report, Apr 25, 11:58 PM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
1158 PM CDT FRI APR 25 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
1050 PM    LEAKEY                    TX   1.75 INCH HAIL
04/25/97   REAL                           18N AT PRADE RANCH

Local storm report, Apr 25, 11:59 PM CDT, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
1158 PM CDT FRI APR 25 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION..|..
 1150 PM    LEAKEY                    TX   1.75 INCH HAIL
04/25/97   REAL                           18N AT PRADE RANCH

Local storm report, Apr 26, 12:01 AM CDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
1158 PM CDT FRI APR 25 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
1050 PM    LEAKEY                    TX   1.75 INCH HAIL
04/25/97   REAL                           18N AT PRADE RANCH

Local storm report, Apr 26, 1:00 AM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
100 AM CDT SAT APR 26 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
1245 AM    UVALDE                    TX   1.75 INCH HAIL
04/26/97   UVALDE                         BETWEEN UVALDE AND KNIPPA

1225 AM    EAGLE PASS                TX   0.75 INCH HAIL
4/26/97    MAVERICK                       0.5 INCH HAIL 1 FT DEEP

Local storm report, Apr 26, 1:01 AM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TEXAS
100 AM CDT SAT APR 26 1997

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....
1245 AM    UVALDE                    TX   1.75 INCH HAIL
04/26/97   UVALDE                         BETWEEN UVALDE AND KNIPPA

1225 AM    EAGLE PASS                TX   0.75 INCH HAIL
4/26/97    MAVERICK                       0.5 INCH HAIL 1 FT DHEEP

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, 11:11 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	2 hr
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, 1:25 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, 1997 Every 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; the sounding from the Mesonet's radiosonde archive.