Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 153, NWS Austin/San Antonio, TX

May 28, 202111 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 28, 2021, 10:23 PM CDT for 11 counties in Texas. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 28, 2021, 10:23 PM CDT (03:23 UTC)
Expired: May 28, 2021, 10:44 PM CDT
In force: 21 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Atascosa County, TX, Bastrop County, TX, Caldwell County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Guadalupe County, TX, Hays County, TX, Karnes County, TX, Lavaca County, TX, Wilson County, TX

The radar

The Austin/San Antonio radar (KEWX), 80 km from the middle of the area, began a volume at 03:24 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
May 28, 6:20 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 3.4 hours before the alert went out and 150 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: 2506 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 712 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted.

527 
WUUS54 KEWX 290323
SVREWX
TXC013-021-055-123-149-177-187-209-255-285-493-290430-
/O.NEW.KEWX.SV.W.0153.210529T0323Z-210529T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1023 PM CDT Fri May 28 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Caldwell County in south central Texas...
  Southeastern Hays County in south central Texas...
  DeWitt County in south central Texas...
  Guadalupe County in south central Texas...
  Karnes County in south central Texas...
  Southeastern Bastrop County in south central Texas...
  Gonzales County in south central Texas...
  Southeastern Atascosa County in south central Texas...
  Southwestern Fayette County in south central Texas...
  Western Lavaca County in south central Texas...
  Wilson County in south central Texas...

* Until 1130 PM CDT.

* At 1022 PM CDT, severe thunderstorms were located along a line
  extending from near Zorn to 8 miles southeast of Seguin to near
  Kosciusko to near Pleasanton, moving east at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  San Marcos, Seguin, Lockhart, Pleasanton, Cuero, Gonzales,
  Floresville, Yoakum, Luling, Jourdanton, Kenedy, Karnes City, Poth,
  Yorktown, Shiner, Stockdale, Flatonia, Moulton, Kosciusko and
  McQueeney.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail, damaging winds, and continuous cloud to ground lightning
are occurring with these storms. 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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 2901 9710 2887 9730 2892 9742 2867 9778
      2872 9792 2869 9801 2879 9810 2872 9820
      2892 9857 2933 9813 2987 9798 2994 9702
      2917 9702
TIME...MOT...LOC 0322Z 283DEG 39KT 2980 9791 2952 9785 2916 9799 2893
9848

HAIL...<.75IN
WIND...60MPH
 
$$

CP

1 follow-up statement

270 
WWUS54 KEWX 290344
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1044 PM CDT Fri May 28 2021

TXC013-021-055-123-149-177-187-209-255-285-493-290354-
/O.CAN.KEWX.SV.W.0153.000000T0000Z-210529T0430Z/
Caldwell TX-Hays TX-DeWitt TX-Guadalupe TX-Karnes TX-Bastrop TX-
Gonzales TX-Atascosa TX-Fayette TX-Lavaca TX-Wilson TX-
1044 PM CDT Fri May 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR CALDWELL...SOUTHEASTERN
HAYS...DEWITT...GUADALUPE...KARNES...SOUTHEASTERN BASTROP...
GONZALES...SOUTHEASTERN ATASCOSA...SOUTHWESTERN FAYETTE...WESTERN
LAVACA AND WILSON COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However small hail, gusty
winds and heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
south central Texas.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Austin San Antonio.

LAT...LON 2901 9710 2887 9730 2892 9742 2867 9778
      2872 9792 2869 9801 2879 9810 2872 9820
      2892 9857 2933 9813 2987 9798 2994 9702
      2917 9702
TIME...MOT...LOC 0342Z 283DEG 39KT 2975 9766 2947 9760 2911 9774 2888
9823

$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 7:01 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Hays, Lee, Travis, Williamson	59 min
May 28, 7:03 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kerr, Real	57 min
May 28, 7:44 PM CDT	Tornado Warning	EWX	Bastrop, Caldwell, Fayette	31 min
May 28, 7:48 PM CDT	Areal Flood Advisory	EWX	Bastrop, Caldwell, Travis	3 hr
May 28, 7:49 PM CDT	Areal Flood Advisory	EWX	Blanco, Gillespie	3 hr
May 28, 7:49 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Edwards, Gillespie, Kerr, Real	56 min
May 28, 7:56 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Caldwell, Fayette, Gonzales, Lee	64 min
May 28, 8:20 PM CDT	Areal Flood Advisory	EWX	Bandera, Gillespie, Kerr	3 hr
May 28, 8:24 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Bastrop, Travis	3 hr
May 28, 8:25 PM CDT	Severe Thunderstorm Warning	EWX	Caldwell, Comal, Guadalupe, Hays	30 min
May 28, 8:28 PM CDT	Tornado Warning	EWX	Fayette	32 min
May 28, 8:38 PM CDT	Severe Thunderstorm Warning	EWX	Fayette, Lavaca, Lee	52 min
May 28, 8:44 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Blanco, Comal, Kendall, Kerr and 3 more	61 min
May 28, 8:48 PM CDT	Areal Flood Advisory	EWX	Atascosa, Bandera, Bexar, Comal, Kendall, Kerr and 1 more	3 hr
May 28, 8:58 PM CDT	Areal Flood Advisory	EWX	Bastrop, Fayette, Lee	5 hr
May 28, 8:58 PM CDT	Special Weather Statement	EWX	Gonzales, Guadalupe	47 min
May 28, 9:00 PM CDT	Areal Flood Advisory	EWX	Caldwell, Comal, Guadalupe, Hays	3 hr
May 28, 9:34 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Caldwell, Comal, Gonzales, Guadalupe, Hays and 2 more	56 min
May 28, 9:42 PM CDT	Flash Flood Warning Considerable damage threat	EWX	Bexar, Comal, Guadalupe	3 hr
May 28, 10:47 PM CDT	Special Weather Statement	EWX	DeWitt, Gonzales, Karnes, Lavaca	58 min
May 28, 10:50 PM CDT	River Flood Warning	EWX	Williamson	8 hr
May 28, 11:19 PM CDT	River Flood Warning	EWX	Blanco	7 hr
May 28, 11:56 PM CDT	Special Weather Statement	EWX	Bandera, Kendall, Kerr	34 min
May 29, 12:09 AM CDT	Special Weather Statement	EWX	Gillespie, Kerr	36 min
May 29, 12:28 AM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Guadalupe	3 hr
May 29, 12:41 AM CDT	Special Weather Statement	EWX	Bandera, Kendall, Kerr	34 min
May 29, 1:11 AM CDT	Special Weather Statement	EWX	Comal, Kendall	49 min
May 29, 1:48 AM CDT	Special Weather Statement	EWX	Gonzales, Guadalupe	57 min
May 29, 2:11 AM CDT	Special Weather Statement	EWX	Val Verde	49 min
May 29, 2:21 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	54 min
May 29, 3:16 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kinney, Maverick, Val Verde	89 min
May 29, 3:20 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kinney, Real, Val Verde	70 min
May 29, 4:38 AM CDT	Special Weather Statement	EWX	Kinney, Uvalde	52 min
May 29, 4:46 AM CDT	Severe Thunderstorm Warning	EWX	Bandera, Medina, Real, Uvalde	27 min
May 29, 5:27 AM CDT	Special Weather Statement	EWX	Maverick, Zavala	48 min
May 29, 5:35 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Maverick, Zavala	55 min
May 29, 5:54 AM CDT	Special Weather Statement	EWX	Atascosa, Frio, Medina	51 min
May 29, 6:28 AM CDT	Areal Flood Advisory	EWX	Bandera, Edwards, Kerr, Real	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.