Alert archive / Texas / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 104, NWS Austin/San Antonio, TX

May 9, 20247 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 9, 2024, 9:11 PM CDT for 7 counties in Texas. It was in force for 64 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 9, 2024, 9:11 PM CDT (02:11 UTC)
Expired: May 9, 2024, 10:15 PM CDT
In force: 64 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Tornado: Possible
Damage threat: Considerable
Hail: 2.0 in
Wind: 60.0 mph

Counties Caldwell County, TX, DeWitt County, TX, Gonzales County, TX, Guadalupe County, TX, Karnes County, TX, Lavaca County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 57 km from the middle of the area, began a volume at 02:11 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
May 9, 5:46 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 2.2 hours before the alert went out and 182 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: 4817 J/kg
Mixed-layer CIN: -246 J/kg
Mixed-layer LCL: 880 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 9, 9:06 PM CDT, 5 minutes earlier.

Area forecast discussion, May 9, 9:06 PM CDT, 5 minutes before

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Hazardous weather outlook, May 9, 5:12 AM CDT, 15 hours 59 minutes before

Hazardous Weather Outlook
National Weather Service Austin/San Antonio TX
512 AM CDT Thu May 9 2024

TXZ171>173-183>194-202>209-217>225-228-101015-
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-
512 AM CDT Thu May 9 2024

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

.DAY ONE...Today And Tonight.

Areas of fog can be expected across south central Texas this
morning. Some dense fog is possible from the Hill Country into
the Interstate 35 corridor.

There is a risk for strong to severe storms for areas along and
northeast of a Rocksprings to San Antonio to Cuero line this
afternoon and evening. Large, possibly very large hail and
damaging winds are the main severe weather threats. In addition, a
tornado can't be ruled out.

Hot and humid conditions continue today, with high temperatures
ranging from near 90 to near 106 across the Rio Grande Plains.
Heat index values up to 108 are expected with the highest values
near the Coastal Plains.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, May 9, 8:32 PM CDT, 39 minutes before

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Local storm report, May 9, 8:35 PM CDT, 36 minutes before

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Local storm report, May 9, 8:41 PM CDT, 30 minutes before

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Local storm report, May 9, 8:51 PM CDT, 20 minutes before

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Local storm report, May 9, 8:58 PM CDT, 13 minutes before

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Special weather statement, May 9, 8:59 PM CDT, 12 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
May 9, 7:34 PM CDT	Severe Thunderstorm Warning Destructive damage threat	EWX	Blanco, Hays, Travis	56 min
May 9, 7:45 PM CDT	Special Weather Statement	EWX	Blanco	30 min
May 9, 7:50 PM CDT	Special Weather Statement	EWX	Burnet	25 min
May 9, 8:00 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Williamson	60 min
May 9, 8:10 PM CDT	Special Weather Statement	EWX	Comal	50 min
May 9, 8:12 PM CDT	Special Weather Statement	EWX	Burnet	48 min
May 9, 8:22 PM CDT	Tornado Warning	EWX	Caldwell, Guadalupe, Hays	23 min
May 9, 8:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EWX	Williamson	61 min
May 9, 8:36 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EWX	Caldwell, Gonzales, Guadalupe, Hays	54 min
May 9, 8:59 PM CDT	Special Weather Statement	EWX	Guadalupe	46 min
May 9, 9:20 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EWX	Bastrop, Lee, Travis, Williamson	55 min
May 9, 9:53 PM CDT	Special Weather Statement	EWX	DeWitt	52 min
May 9, 10:04 PM CDT	Severe Thunderstorm Warning Considerable damage threat	EWX	Fayette, Lee	56 min
May 9, 10:06 PM CDT	Special Weather Statement	EWX	Lavaca	39 min
May 10, 2:50 PM CDT	Special Weather Statement	EWX	Burnet	25 min
May 10, 3:15 PM CDT	Special Weather Statement	EWX	Llano	45 min

Nearby

Severe Thunderstorm Warnings in Texas, 2024 Every severe thunderstorm warning in 2024

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.