Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 322, NWS Austin/San Antonio, TX

September 25, 2023Kerr County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Sep 25, 2023, 1:30 AM CDT for Kerr County, Texas. It was in force for 60 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
Sep 25, 2023, 1:30 AM CDT (06:30 UTC)
Expired
Sep 25, 2023, 2:30 AM CDT
In force
60 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Kerr County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 6.5 hours before the alert went out and 163 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2023-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1039 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2023-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -39 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1039 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
2946 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-39 m²/s²
0-3 km storm-relative helicity
10 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Sep 25, 12:51 AM CDT, 39 minutes earlier.

Area forecast discussion, Sep 25, 12:51 AM CDT, 39 minutes before
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Hazardous weather outlook, Sep 24, 5:23 PM CDT, 8 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
523 PM CDT Sun Sep 24 2023

TXZ171>173-183>194-202>209-217>225-228-252230-
Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera-
Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde-
Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala-
Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit-
523 PM CDT Sun Sep 24 2023

This Hazardous Weather Outlook is for South-Central Texas..

.DAY ONE...Tonight.

A slight (level 2/5) risk continues this evening over portions of
Hill Country and the I-35 Corridor, where scattered storms have
begun to develop. A Severe Thunderstorm Watch has been issued by
the Storm Prediction Center through 11 PM for Blanco, Burnet,
Gillespie, Llano, and Williamson Counties. Large hail and
damaging wind gusts will be the main hazards in any severe storms.
Have multiple ways of receiving warning information over this
portion of South-Central Texas this evening.

Dangerous heat & humidity will continue through early evening
along/east of I-35 and over portions of the southern Edwards
Plateau. A Heat Advisory remains in effect through 7 PM.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Additional showers and thunderstorms are expected across the area
on Monday afternoon. Locally heavy rainfall, gusty winds, and hail
will be possible in this activity. A marginal (level 1/5) risk for
severe thunderstorms continues over most of the area given this
potential, in addition to a marginal (level 1/4) risk for
excessive rainfall.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Sep 24, 10:44 PM CDT, 2 hours 46 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1044 PM CDT Sun Sep 24 2023

TXZ191>193-208-250430-
Caldwell TX-Bastrop TX-Hays TX-Travis TX-
1044 PM CDT Sun Sep 24 2023

...A strong thunderstorm will impact portions of northwestern
Caldwell, east central Hays, southeastern Travis and southwestern
Bastrop Counties through 1130 PM CDT...

At 1043 PM CDT, Doppler radar was tracking a strong thunderstorm near
Austin Bergstrom Int Airport, moving south at 15 mph.

HAZARD...Winds in excess of 40 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...
Austin, Lockhart, Austin Bergstrom Int Airport, Uhland, Mustang
Ridge, Niederwald, Cedar Creek, Wyldwood, Onion Creek, Hornsby Bend,
Webberville, Creedmoor, Garfield, Rockne, Watterson, Maha, Maxwell,
Red Rock, McKinney Falls State Park, and Lytton Springs.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central Texas.

&&

LAT...LON 3021 9777 3025 9751 2995 9728 2986 9782
TIME...MOT...LOC 0343Z 350DEG 12KT 3014 9764

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

CP
Local storm report, Sep 24, 10:52 PM CDT, 2 hours 38 minutes before
Preliminary Local Storm Report
National Weather Service Austin/San Antonio TX
1052 PM CDT Sun Sep 24 2023

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

1044 PM     Hail             3 ENE Austin            30.30N 97.70W
09/24/2023  E2.00 inch       Travis             TX   Public

            Report from mPING Hen Egg.

&&

MB
Special weather statement, Sep 24, 11:13 PM CDT, 2 hours 17 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1113 PM CDT Sun Sep 24 2023

TXZ171-188-250500-
Gillespie TX-Llano TX-
1113 PM CDT Sun Sep 24 2023

...A strong thunderstorm will impact portions of northeastern
Gillespie and southern Llano Counties through MIDNIGHT CDT...

At 1113 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles east of Castell, or 10 miles southwest of Llano, moving
southeast at 25 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...
Oxford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
south central Texas.

&&

LAT...LON 3061 9846 3053 9850 3050 9859 3039 9859
      3065 9895 3080 9884
TIME...MOT...LOC 0413Z 303DEG 23KT 3069 9883

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

29
Special weather statement, Sep 24, 11:25 PM CDT, 2 hours 5 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1125 PM CDT Sun Sep 24 2023

TXZ173-250515-
Williamson TX-
1125 PM CDT Sun Sep 24 2023

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

At 1125 PM CDT, Doppler radar was tracking a strong thunderstorm over
Granger Dam, or 7 miles east of Granger, moving southeast at 15 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...
Granger Dam, Laneport, Sandoval, and Hare.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

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.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
south central Texas.

&&

LAT...LON 3074 9727 3055 9719 3054 9719 3066 9733
      3076 9739 3077 9737
TIME...MOT...LOC 0425Z 328DEG 15KT 3074 9732

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

PLATT
Special weather statement, Sep 24, 11:31 PM CDT, 1 hour 59 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1131 PM CDT Sun Sep 24 2023

TXZ186-188-250515-
Gillespie TX-Kerr TX-
1131 PM CDT Sun Sep 24 2023

...A strong thunderstorm will impact portions of northwestern Kerr
and southwestern Gillespie Counties through 1215 AM CDT...

At 1130 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles north of Mountain Home, or 22 miles northwest of Kerrville,
moving southeast at 15 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...
Mountain Home, Harper, Kerr Wildlife Management Area, Us-
83 Near The Kerr-Kimble County Line, I-10 Near The Kimble-
Kerr County Line, and The Intersection Of I-10 And Us 290.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
south central Texas.

&&

LAT...LON 3013 9914 3011 9963 3029 9974 3029 9930
      3031 9930 3031 9915
TIME...MOT...LOC 0430Z 300DEG 14KT 3027 9940

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

PLATT
Special weather statement, Sep 25, 12:31 AM CDT, 59 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 24, 7:05 PM CDTSpecial Weather StatementEWXBlanco40 min
Sep 24, 7:29 PM CDTSevere Thunderstorm WarningEWXBlanco61 min
Sep 24, 7:36 PM CDTSevere Thunderstorm WarningEWXGillespie54 min
Sep 24, 7:49 PM CDTSpecial Weather StatementEWXGillespie41 min
Sep 24, 7:54 PM CDTSevere Thunderstorm WarningEWXGillespie66 min
Sep 24, 7:55 PM CDTSevere Thunderstorm WarningEWXWilliamson65 min
Sep 24, 8:13 PM CDTAreal Flood AdvisoryEWXGillespie5 hr
Sep 24, 8:25 PM CDTSevere Thunderstorm WarningEWXGillespie65 min
Sep 24, 8:40 PM CDTSevere Thunderstorm Warning Considerable damage threatEWXTravis, Williamson65 min
Sep 24, 8:44 PM CDTSevere Thunderstorm WarningEWXWilliamson61 min
Sep 24, 9:03 PM CDTSevere Thunderstorm WarningEWXGillespie, Kendall, Kerr44 min
Sep 24, 9:07 PM CDTSpecial Weather StatementEWXBurnet23 min
Sep 24, 9:40 PM CDTSevere Thunderstorm Warning Considerable damage threatEWXBastrop, Caldwell, Hays, Travis65 min
Sep 24, 9:46 PM CDTSpecial Weather StatementEWXKendall44 min
Sep 24, 9:50 PM CDTSpecial Weather StatementEWXLee40 min
Sep 24, 10:27 PM CDTSpecial Weather StatementEWXGillespie48 min
Sep 24, 10:29 PM CDTSpecial Weather StatementEWXGillespie46 min
Sep 24, 10:33 PM CDTSpecial Weather StatementEWXBexar42 min
Sep 24, 10:44 PM CDTSpecial Weather StatementEWXBastrop46 min
Sep 24, 11:13 PM CDTSpecial Weather StatementEWXLlano47 min
Sep 24, 11:25 PM CDTSpecial Weather StatementEWXWilliamson50 min
Sep 24, 11:31 PM CDTSpecial Weather StatementEWXKerr44 min
Sep 24, 11:49 PM CDTSevere Thunderstorm WarningEWXGillespie, Kerr56 min
Sep 25, 12:31 AM CDTSpecial Weather StatementEWXKerr44 min
Sep 25, 1:09 AM CDTAreal Flood AdvisoryEWXGillespie4 hr
Sep 25, 1:41 AM CDTAreal Flood AdvisoryEWXKerr5 hr
Sep 25, 1:42 AM CDTSpecial Weather StatementEWXGillespie33 min
Sep 25, 2:32 AM CDTSpecial Weather StatementEWXKerr43 min
Sep 25, 2:48 AM CDTSpecial Weather StatementEWXBandera57 min
Sep 25, 3:12 AM CDTSpecial Weather StatementEWXKerr33 min
Sep 25, 3:42 AM CDTSpecial Weather StatementEWXMedina48 min
Sep 25, 3:43 AM CDTSpecial Weather StatementEWXKerr47 min
Sep 25, 4:33 AM CDTSpecial Weather StatementEWXKerr27 min
Sep 25, 4:49 AM CDTSpecial Weather StatementEWXKimble41 min
Sep 25, 6:09 AM CDTSevere Thunderstorm Warning Considerable damage threatEWXEdwards66 min
Sep 25, 6:49 AM CDTSpecial Weather StatementEWXReal26 min
Sep 25, 7:06 AM CDTSevere Thunderstorm WarningEWXEdwards, Kerr, Real39 min
Sep 25, 7:43 AM CDTSpecial Weather StatementEWXReal47 min
Sep 25, 7:46 AM CDTAreal Flood AdvisoryEWXEdwards, Kerr, Real3 hr
Sep 25, 8:04 AM CDTSpecial Weather StatementEWXEdwards41 min
Sep 25, 8:06 AM CDTSpecial Weather StatementEWXReal39 min
Sep 25, 8:21 AM CDTSevere Thunderstorm WarningEWXEdwards39 min
Sep 25, 8:44 AM CDTSpecial Weather StatementEWXReal46 min
Sep 25, 9:21 AM CDTSpecial Weather StatementEWXEdwards39 min
Sep 25, 11:19 AM CDTAreal Flood AdvisoryEWXEdwards4 hr
Sep 25, 11:21 AM CDTSpecial Weather StatementEWXEdwards39 min
Sep 25, 5:59 PM CDTSevere Thunderstorm Warning Considerable damage threatEWXVal Verde21 min

Nearby

Severe Thunderstorm Warnings in Texas, 2023Every severe thunderstorm warning in 2023

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.