Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 142, NWS Austin/San Antonio, TX

April 28, 20234 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 28, 2023, 7:23 PM CDT for 4 counties in Texas. It was in force for 52 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: Apr 28, 2023, 7:23 PM CDT (00:23 UTC)
Expired: Apr 28, 2023, 8:15 PM CDT
In force: 52 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Gonzales County, TX, Guadalupe County, TX, Karnes County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 50 km from the middle of the area, began a volume at 00:24 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 28, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 0.4 hours before the alert went out and 179 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: 2110 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1085 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 9.4

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 28, 7:15 PM CDT, 8 minutes earlier.

Area forecast discussion, Apr 28, 7:15 PM CDT, 8 minutes before

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Hazardous weather outlook, Apr 28, 2:28 PM CDT, 4 hours 55 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
228 PM CDT Fri Apr 28 2023

TXZ171>173-183>194-202>209-217>225-228-291930-
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-
228 PM CDT Fri Apr 28 2023

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

.DAY ONE...Tonight.

Severe Thunderstorm Watch currently in effect across most of
South- Central Texas through 9 pm. Scattered to numerous severe
thunderstorms are expected to develop across the Hill Country and
move east into the I-35 corridor between 5-8 pm, and into the
Coastal Plains from 7PM-10 pm. There is a Level 3 of 5 risk for
severe storms along this line. Scattered to numerous instances of
damaging straight- line wind gusts and large to very large hail
are possible. An isolated tornado or two is also possible.
Isolated pockets of quick flooding are possible near and east of
I-35 where more intense rainfall rates could occur.

Remain weather aware this afternoon and evening. Given the
potential timing of storms during the late afternoon into the
Friday evening commute, those with travel plans should pay close
attention to the radar and any potential watches and warnings.

Wind Advisory in effect across the Southern Edwards Plateau into
the Western Hill Country from 7 pm this evening through 1 am with
with north winds of 25 to 35 mph with gusts up to 45 mph.

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

An additional wind advisory may needed across portions of South-
Central Texas on Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Apr 28, 6:59 PM CDT, 24 minutes before

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Local storm report, Apr 28, 7:01 PM CDT, 22 minutes before

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Local storm report, Apr 28, 7:02 PM CDT, 21 minutes before

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Local storm report, Apr 28, 7:05 PM CDT, 18 minutes before

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Local storm report, Apr 28, 7:07 PM CDT, 16 minutes before

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Special weather statement, Apr 28, 7:23 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 7:08 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee	37 min
Apr 28, 7:23 PM CDT	Special Weather Statement	EWX	Lavaca	52 min
Apr 28, 7:54 PM CDT	Severe Thunderstorm Warning	EWX	DeWitt, Gonzales, Karnes, Lavaca	66 min
Apr 28, 8:18 PM CDT	Special Weather Statement	EWX	Dimmit	42 min
Apr 29, 2:36 AM CDT	Wind Advisory	EWX	Bastrop, Caldwell, Comal, DeWitt, Fayette, Gonzales and 6 more	11 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2023 Every 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.