Alert archive / Texas / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 59, NWS Austin/San Antonio, TX

May 1, 2026Frio County, Zavala County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 1, 2026, 12:42 AM CDT for Frio County, Zavala County, Texas. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 1, 2026, 12:42 AM CDT (05:42 UTC)
Expired: May 1, 2026, 1:45 AM CDT
In force: 63 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Frio County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 94 km from the middle of the area, began a volume at 05:41 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 00:00Z, 5.7 hours before the alert went out and 241 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: 1072 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 870 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.5

Open this sounding in Storm Lab

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.

NWS Austin/San Antonio, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 6:42 PM CDT, 6 hours earlier.

Area forecast discussion, Apr 30, 6:42 PM CDT, 6 hours before

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In the hours before

Special weather statement, Apr 30, 10:39 PM CDT, 2 hours 3 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
1039 PM CDT Thu Apr 30 2026

TXZ217-228-010430-
Maverick TX-Dimmit TX-
1039 PM CDT Thu Apr 30 2026

...A strong thunderstorm will impact portions of southeastern
Maverick and northwestern Dimmit Counties through 1130 PM CDT...

At 1039 PM CDT, Doppler radar was tracking a strong thunderstorm near
El Indio, moving east at 25 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Carrizo Springs, El Indio, Winter Haven, Carrizo Hill, and Farias
Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2833 10030 2840 10035 2842 10034 2845 10034
      2848 10037 2848 10035 2850 10033 2851 10038
      2852 10039 2865 9993 2864 9981 2833 9979
TIME...MOT...LOC 0339Z 264DEG 22KT 2843 10033

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

MO

Special weather statement, Apr 30, 11:28 PM CDT, 1 hour 14 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
1128 PM CDT Thu Apr 30 2026

TXZ228-010515-
Dimmit TX-
1128 PM CDT Thu Apr 30 2026

...A strong thunderstorm will impact portions of central Dimmit
County through 1215 AM CDT...

At 1127 PM CDT, Doppler radar was tracking a strong thunderstorm over
Asherton, or 10 miles southeast of Carrizo Springs, moving east at 15
mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Carrizo Springs, Big Wells, Asherton, Chaparral Wildlife Management
Area, Carrizo Hill, Catarina, Las Vegas, and Brundage.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 2833 9995 2852 9996 2860 9940 2832 9939
TIME...MOT...LOC 0427Z 270DEG 15KT 2845 9972

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

MO

Local storm report, Apr 30, 11:35 PM CDT, 1 hour 7 minutes before

Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
1135 PM CDT Thu Apr 30 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1131 PM     Hail             Asherton                28.45N 99.76W
04/30/2026  M1.00 Inch       Dimmit             TX   Trained Spotter

            Quarter size hail in Asherton.

&&

BF

Special weather statement, Apr 30, 11:50 PM CDT, 52 minutes before

Special Weather Statement
National Weather Service Austin/San Antonio TX
1150 PM CDT Thu Apr 30 2026

TXZ217-010530-
Maverick TX-
1150 PM CDT Thu Apr 30 2026

...A strong thunderstorm will impact portions of northern Maverick
County through 1230 AM CDT...

At 1150 PM CDT, Doppler radar was tracking a strong thunderstorm near
Radar Base, or 8 miles northwest of Eagle Pass, moving east at 45
mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Eagle Pass, Quemado, Paloma, Radar Base, Normandy, Darling, Siesta
Acres, Fabrica, Elm Creek, Las Quintas Fronterizas, and Seco Mines.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2871 10051 2874 10051 2876 10053 2880 10053
      2883 10055 2883 10058 2885 10057 2888 10060
      2889 10059 2891 10062 2890 10063 2892 10063
      2894 10065 2905 10014 2870 10012 2867 10050
TIME...MOT...LOC 0450Z 262DEG 41KT 2879 10059

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

MO

Local storm report, May 1, 12:11 AM CDT, 31 minutes before

Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
1211 AM CDT Fri May 1 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1136 AM     Hail             Asherton                28.45N 99.76W
04/30/2026  M1.75 Inch       Dimmit             TX   Public

            Picture on social media of golf ball size
            hail.

&&

BF

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 10:39 PM CDT	Special Weather Statement	EWX	Dimmit	51 min
Apr 30, 11:28 PM CDT	Special Weather Statement	EWX	Dimmit	47 min
Apr 30, 11:33 PM CDT	Severe Thunderstorm Warning	EWX	Dimmit	57 min
Apr 30, 11:50 PM CDT	Special Weather Statement	EWX	Maverick	40 min
May 1, 12:05 AM CDT	Severe Thunderstorm Warning	EWX	Maverick, Zavala	55 min
May 1, 12:52 AM CDT	Special Weather Statement	EWX	Guadalupe	38 min
May 1, 1:22 AM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Gonzales, Guadalupe	53 min
May 1, 1:28 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Frio, Zavala	62 min
May 1, 1:53 AM CDT	Areal Flood Advisory	EWX	Bandera, Bexar, Caldwell, Comal, Gonzales, Guadalupe and 3 more	8 hr
May 1, 2:13 AM CDT	Special Weather Statement	EWX	Lavaca	47 min
May 1, 2:28 AM CDT	Special Weather Statement	EWX	Karnes	47 min
May 1, 2:31 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Karnes	44 min
May 1, 2:37 AM CDT	Severe Thunderstorm Warning	EWX	Lavaca	23 min
May 1, 2:46 AM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Karnes	32 min
May 1, 3:17 AM CDT	Special Weather Statement	EWX	DeWitt	43 min
May 1, 3:22 AM CDT	Special Weather Statement	EWX	Karnes	38 min
May 1, 5:08 AM CDT	Flash Flood Warning Considerable damage threat	EWX	Bexar, Comal, Guadalupe, Medina	10 hr
May 1, 5:37 AM CDT	Areal Flood Advisory	EWX	Atascosa, Bexar, DeWitt, Frio, Gonzales, Guadalupe and 3 more	4 hr
May 1, 6:34 AM CDT	Areal Flood Advisory	EWX	Caldwell, Fayette, Gonzales, Lavaca	4 hr
May 1, 7:38 AM CDT	Special Weather Statement	EWX	Maverick	52 min
May 1, 8:04 AM CDT	Severe Thunderstorm Warning	EWX	Maverick, Uvalde, Zavala	20 min
May 1, 8:23 AM CDT	Special Weather Statement	EWX	Zavala	52 min
May 1, 9:06 AM CDT	Special Weather Statement	EWX	Frio	39 min
May 1, 11:26 AM CDT	Special Weather Statement	EWX	Atascosa	49 min
May 1, 11:35 AM CDT	Areal Flood Advisory	EWX	Atascosa, Bexar, Frio, Medina	3 hr
May 1, 11:54 AM CDT	Severe Thunderstorm Warning	EWX	Atascosa, Wilson	51 min
May 1, 12:29 PM CDT	Severe Thunderstorm Warning	EWX	Atascosa, DeWitt, Karnes, Wilson	46 min
May 1, 12:35 PM CDT	Special Weather Statement	EWX	Atascosa, Frio	40 min

Nearby

Severe Thunderstorm Warnings in Texas, 2026 Every severe thunderstorm warning in 2026

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.