Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 198, NWS Austin/San Antonio, TX

May 20, 2023Edwards County, Real County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 20, 2023, 12:42 AM CDT for Edwards County, Real County, Uvalde County, Texas. It was in force for 48 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 20, 2023, 12:42 AM CDT (05:42 UTC)
Expired
May 20, 2023, 1:30 AM CDT
In force
48 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Edwards County, TX, Real County, TX, Uvalde County, TX

The radar

The Laughlin AFB radar (KDFX), 59 km from the middle of the area, began a volume at 05:44 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

Del Rio, TX (KDRT), launched 00:00Z, 5.7 hours before the alert went out and 94 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 2023-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1482 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 2023-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.19395878Sfc1 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
1482 J/kg
Mixed-layer CIN
-149 J/kg
Mixed-layer LCL
1777 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
11 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 May 19, 9:04 PM CDT, 3 hours 38 minutes earlier.

Area forecast discussion, May 19, 9:04 PM CDT, 3 hours 38 minutes before
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Hazardous weather outlook, May 19, 10:30 PM CDT, 2 hours 12 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Austin/San Antonio TX
1030 PM CDT Fri May 19 2023

TXZ171>173-183>194-202>209-217>225-228-210330-
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-
1030 PM CDT Fri May 19 2023

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

.DAY ONE...Today And Tonight.

There is a level 2 out of 5 risk for strong to severe storms from
late this afternoon through tonight across the Edwards Plateau,
Hill Country, and I-35 corridor. Large hail and damaging wind
gusts are the main severe threats. In addition, locally heavy
rainfall and isolated flooding is possible. A Severe Thunderstorm
Watch is in effect until midnight for most of the locations
mentioned above.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a level 1 out of 5 risk for strong to severe storms and
locally heavy rainfall across the Rio Grande Plains on Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, May 19, 11:43 PM CDT, 59 minutes before
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Special weather statement, May 20, 12:04 AM CDT, 38 minutes before
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Special weather statement, May 20, 12:12 AM CDT, 30 minutes before
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Special weather statement, May 20, 12:15 AM CDT, 27 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1215 AM CDT Sat May 20 2023

TXZ184-185-200600-
Edwards TX-Real TX-
1215 AM CDT Sat May 20 2023

...A strong thunderstorm will impact portions of south central
Edwards and southwestern Real Counties through 100 AM CDT...

At 1215 AM CDT, Doppler radar was tracking a strong thunderstorm 12
miles west of Barksdale, or 15 miles south of Rocksprings, moving
southeast at 10 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...
Camp Wood, Vance and Barksdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 2993 9976 2962 9989 2962 10010 2971 10041
      2995 10021
TIME...MOT...LOC 0515Z 303DEG 9KT 2979 10023

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

BRADY
Special weather statement, May 20, 12:26 AM CDT, 16 minutes before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1226 AM CDT Sat May 20 2023

TXZ205-200615-
Bexar TX-
1226 AM CDT Sat May 20 2023

...A strong thunderstorm will impact portions of northwestern Bexar
County through 115 AM CDT...

At 1226 AM CDT, Doppler radar was tracking a strong thunderstorm over
Government Canyon State Natural Area, or 12 miles south of Boerne,
moving southeast at 15 mph.

HAZARD...Wind gusts up to 50 mph and half inch 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...
San Antonio, San Antonio Int Airport, Leon Valley, Helotes, Fair Oaks
Ranch, Shavano Park, Hollywood Park, Cross Mountain, Lackland AFB,
Leon Springs, The Dominion, Government Canyon State Natural Area, Sea
World, Timberwood Park, Castle Hills, Balcones Heights, Hill Country
Village, Grey Forest, San Geronimo and Fiesta Texas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 2951 9880 2962 9881 2974 9870 2974 9867
      2964 9839 2935 9862
TIME...MOT...LOC 0526Z 304DEG 15KT 2960 9874

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH

BRADY
Special weather statement, May 20, 12:41 AM CDT, 1 minute before
Special Weather Statement
National Weather Service Austin/San Antonio TX
1241 AM CDT Sat May 20 2023

TXZ228-200630-
Dimmit TX-
1241 AM CDT Sat May 20 2023

...A strong thunderstorm will impact portions of western Dimmit
County through 130 AM CDT...

At 1238 AM CDT, Doppler radar was tracking a strong thunderstorm 14
miles southwest of Carrizo Springs, with another strong thunderstorm
located 19 miles southwest of Asherton. Both storms are moving
northeast around 10 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...
Gilson Groves.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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 2845 10011 2857 9992 2820 9968 2820 10011
TIME...MOT...LOC 0538Z 229DEG 10KT 2838 10003

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

PLATT

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 7:37 PM CDTSevere Thunderstorm WarningEWXBlanco, Burnet, Gillespie, Llano68 min
May 19, 7:49 PM CDTAreal Flood AdvisoryEWXLlano4 hr
May 19, 8:37 PM CDTSpecial Weather StatementEWXBlanco38 min
May 19, 9:25 PM CDTSpecial Weather StatementEWXGillespie50 min
May 19, 9:28 PM CDTSevere Thunderstorm WarningEWXBlanco, Gillespie50 min
May 19, 10:40 PM CDTSpecial Weather StatementEWXBlanco50 min
May 19, 10:41 PM CDTAreal Flood AdvisoryEWXBlanco, Gillespie, Llano4 hr
May 19, 11:13 PM CDTSpecial Weather StatementEWXKendall47 min
May 19, 11:43 PM CDTSpecial Weather StatementEWXDimmit47 min
May 20, 12:04 AM CDTSpecial Weather StatementEWXKendall41 min
May 20, 12:12 AM CDTSpecial Weather StatementEWXKerr48 min
May 20, 12:12 AM CDTSevere Thunderstorm WarningEWXBexar, Kendall, Kerr35 min
May 20, 12:15 AM CDTSpecial Weather StatementEWXReal45 min
May 20, 12:26 AM CDTSpecial Weather StatementEWXBexar49 min
May 20, 12:41 AM CDTSpecial Weather StatementEWXDimmit49 min
May 20, 12:45 AM CDTSpecial Weather StatementEWXBandera, Kerr60 min
May 20, 1:04 AM CDTSpecial Weather StatementEWXBexar41 min
May 20, 1:13 AM CDTSevere Thunderstorm WarningEWXBandera19 min
May 20, 1:23 AM CDTSevere Thunderstorm WarningEWXReal, Uvalde67 min
May 20, 1:36 AM CDTSpecial Weather StatementEWXMedina54 min
May 20, 1:41 AM CDTAreal Flood AdvisoryEWXBexar5 hr
May 20, 1:57 AM CDTAreal Flood AdvisoryEWXMedina3 hr
May 20, 2:08 AM CDTSevere Thunderstorm WarningEWXAtascosa, Frio, Medina43 min
May 20, 2:26 AM CDTFlash Flood Warning Considerable damage threatEWXMedina5 hr
May 20, 2:39 AM CDTAreal Flood AdvisoryEWXUvalde3 hr
May 20, 2:43 AM CDTSpecial Weather StatementEWXAtascosa47 min
May 20, 2:53 AM CDTSpecial Weather StatementEWXMedina37 min
May 20, 3:03 AM CDTAreal Flood AdvisoryEWXAtascosa, Bexar, Frio, Medina3 hr
May 20, 3:26 AM CDTAreal Flood AdvisoryEWXKinney, Uvalde, Zavala3 hr
May 20, 3:34 AM CDTFlash Flood Warning Considerable damage threatEWXAtascosa, Frio, Medina3 hr
May 20, 4:32 AM CDTSpecial Weather StatementEWXAtascosa, Karnes, Wilson58 min
May 20, 4:48 AM CDTAreal Flood AdvisoryEWXAtascosa3 hr
May 20, 7:22 AM CDTSpecial Weather StatementEWXKinney38 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; radar from the NEXRAD Level II archive.