Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 96, NWS Austin/San Antonio, TX

May 3, 2021Bexar County, Guadalupe County, Wilson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 3, 2021, 8:23 PM CDT for Bexar County, Guadalupe County, Wilson County, Texas. It was in force for 22 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 3, 2021, 8:23 PM CDT (01:23 UTC)
Expired: May 3, 2021, 8:45 PM CDT
In force: 22 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 2.0 in
Wind: 60.0 mph

Counties Bexar County, TX, Guadalupe County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 43 km from the middle of the area, began a volume at 01:24 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.

What was reported inside it

Time	Report	Where	Remark
May 3, 8:25 PM CDT	HAIL 2.75	5 Sw China Grove, TX	TWITTER REPORT AT SE MILITARY AND ALSBROOK DR.
May 3, 8:30 PM CDT	HAIL 2.5	5 Wsw China Grove, TX	TWITTER REPORT KATE SCHENCK AV AND ALSBROOK DR.
May 3, 8:35 PM CDT	HAIL 5.5	3 Sse China Grove, TX	TWITTER REPORT, VERIFED THROUGH LOCAL MEDIA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 3, 7:01 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 1.4 hours before the alert went out and 199 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: 1737 J/kg
Mixed-layer CIN: -372 J/kg
Mixed-layer LCL: 1458 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

209 
WUUS54 KEWX 040123
SVREWX
TXC029-187-493-040145-
/O.NEW.KEWX.SV.W.0096.210504T0123Z-210504T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
823 PM CDT Mon May 3 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  South central Guadalupe County in south central Texas...
  Northwestern Wilson County in south central Texas...
  Southeastern Bexar County in south central Texas...

* Until 845 PM CDT.

* At 823 PM CDT, a severe thunderstorm was located near Stinson
  Municipal Airport, moving east at 25 mph.

  HAZARD...Two inch hail and 60 mph wind gusts.

  SOURCE...Public.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  San Antonio, Stockdale, Stinson Municipal Airport, St. Hedwig,
  Elmendorf, La Vernia, China Grove, New Berlin, Calaveras Lake,
  Sutherland Springs, Parita, Southton, Sayers, Brooks City Base and
  Adkins.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!

Large hail, damaging winds, and continuous cloud to ground lightning
are occurring with this storm. Move indoors immediately. Lightning is
one of nature's leading killers. Remember, if you can hear thunder,
you are close enough to be struck by lightning.

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

&&

LAT...LON 2928 9850 2934 9851 2944 9813 2946 9806
      2941 9802 2938 9801 2921 9791
TIME...MOT...LOC 0123Z 266DEG 21KT 2937 9842 

HAIL...2.00IN
WIND...60MPH
 
$$

BRADY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 3, 7:10 PM CDT	Special Weather Statement	EWX	Kendall	50 min
May 3, 7:12 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Medina	63 min
May 3, 7:14 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Blanco, Gillespie, Kendall, Kerr and 1 more	61 min
May 3, 7:30 PM CDT	Areal Flood Advisory	EWX	Bandera, Bexar, Comal, Kendall, Medina	3 hr
May 3, 7:49 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Comal, Guadalupe	56 min
May 3, 8:12 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Gillespie, Kendall, Llano	48 min
May 3, 8:19 PM CDT	Areal Flood Advisory	EWX	Bexar, Guadalupe, Wilson	3 hr
May 3, 8:43 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Gonzales, Guadalupe, Wilson	62 min
May 3, 8:53 PM CDT	Special Weather Statement	EWX	Burnet	52 min
May 3, 8:58 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Llano, Travis, Williamson	62 min
May 3, 9:16 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano, Travis, Williamson	41 min
May 3, 10:08 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	30 min
May 4, 6:33 AM CDT	Special Weather Statement	EWX	Caldwell	42 min
May 4, 6:41 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Travis	64 min
May 4, 7:25 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Travis	50 min
May 4, 7:37 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee	53 min
May 4, 8:05 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Lee, Travis, Williamson	13 min
May 4, 8:20 AM CDT	Special Weather Statement	EWX	Hays, Travis	40 min
May 4, 8:22 AM CDT	Special Weather Statement	EWX	Lee	38 min
May 4, 8:22 AM CDT	Special Weather Statement	EWX	Lee	38 min
May 4, 8:25 AM CDT	Special Weather Statement	EWX	Lee	35 min
May 4, 8:59 AM CDT	Special Weather Statement	EWX	Hays, Travis	46 min
May 4, 9:27 AM CDT	Special Weather Statement	EWX	Guadalupe	33 min
May 4, 9:48 AM CDT	Special Weather Statement	EWX	Bastrop	27 min
May 4, 9:58 AM CDT	Special Weather Statement	EWX	Caldwell	47 min
May 4, 10:04 AM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Fayette	41 min
May 4, 10:38 AM CDT	Special Weather Statement	EWX	Bastrop	37 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.