Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 95, NWS Austin/San Antonio, TX

May 3, 20215 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 3, 2021, 8:12 PM CDT for 5 counties in 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 outline as issued.

The facts

Issued: May 3, 2021, 8:12 PM CDT (01:12 UTC)
Expired: May 3, 2021, 9:00 PM 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 Blanco County, TX, Burnet County, TX, Gillespie County, TX, Kendall County, TX, Llano County, TX

The radar

The Austin/San Antonio radar (KEWX), 80 km from the middle of the area, began a volume at 01:13 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 3, 7:01 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.2 hours before the alert went out and 271 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 4428 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

817 
WUUS54 KEWX 040112
SVREWX
TXC031-053-171-259-299-040200-
/O.NEW.KEWX.SV.W.0095.210504T0112Z-210504T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
812 PM CDT Mon May 3 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Blanco County in south central Texas...
  Eastern Gillespie County in south central Texas...
  Southeastern Llano County in south central Texas...
  Northeastern Kendall County in south central Texas...
  Southwestern Burnet County in south central Texas...

* Until 900 PM CDT.

* At 812 PM CDT, a severe thunderstorm was located over Flugrath, or
  7 miles west of Blanco, moving northeast at 40 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Marble Falls, Blanco, Round Mountain, Horseshoe Bay, Johnson City,
  Stonewall, Flugrath, Kendalia, Spicewood, Blowout, Sandy, LBJ State
  Park, Rocky Creek, Hye, Cypress Mill, Pedernales Falls State Park,
  Albert, Cottonwood Shores, Sunrise Beach Village and LBJ National
  Historical Park.

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 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 3050 9812 3048 9812 3049 9811 3049 9810
      3048 9810 2993 9847 3000 9876 3061 9866
TIME...MOT...LOC 0112Z 205DEG 34KT 3010 9855 

HAIL...1.00IN
WIND...60MPH
 
$$

BRADY

2 follow-up statements

691 
WWUS54 KEWX 040130
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
830 PM CDT Mon May 3 2021

TXC259-040140-
/O.CAN.KEWX.SV.W.0095.000000T0000Z-210504T0200Z/
Kendall TX-
830 PM CDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KENDALL COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central Texas.

LAT...LON 3008 9837 3016 9866 3061 9864 3050 9812
      3048 9812 3049 9811 3049 9810 3048 9810
TIME...MOT...LOC 0130Z 205DEG 34KT 3026 9846 

$$

TXC031-053-171-299-040200-
/O.CON.KEWX.SV.W.0095.000000T0000Z-210504T0200Z/
Blanco TX-Gillespie TX-Llano TX-Burnet TX-
830 PM CDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR BLANCO...EASTERN GILLESPIE...SOUTHEASTERN LLANO AND SOUTHWESTERN
BURNET COUNTIES...

At 830 PM CDT, a severe thunderstorm was located near Johnson City,
or 11 miles north of Blanco, moving northeast at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Marble Falls, Blanco, Round Mountain, Horseshoe Bay, Johnson City,
Stonewall, Spicewood, Blowout, Sandy, LBJ State Park, Rocky Creek,
Hye, Cypress Mill, Pedernales Falls State Park, Albert, Cottonwood
Shores, Sunrise Beach Village and LBJ National Historical Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3008 9837 3016 9866 3061 9864 3050 9812
      3048 9812 3049 9811 3049 9810 3048 9810
TIME...MOT...LOC 0130Z 205DEG 34KT 3026 9846 

HAIL...1.00IN
WIND...60MPH
 
$$

BRADY

458 
WWUS54 KEWX 040147
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
847 PM CDT Mon May 3 2021

TXC171-040157-
/O.CAN.KEWX.SV.W.0095.000000T0000Z-210504T0200Z/
Gillespie TX-
847 PM CDT Mon May 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN GILLESPIE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central Texas.

LAT...LON 3050 9813 3048 9812 3049 9810 3046 9811
      3022 9828 3032 9859 3060 9860
TIME...MOT...LOC 0147Z 205DEG 34KT 3041 9838 

$$

TXC031-053-299-040200-
/O.CON.KEWX.SV.W.0095.000000T0000Z-210504T0200Z/
Blanco TX-Llano TX-Burnet TX-
847 PM CDT Mon May 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR NORTHERN BLANCO...SOUTHEASTERN LLANO AND SOUTHWESTERN BURNET
COUNTIES...

At 847 PM CDT, a severe thunderstorm was located over Round Mountain,
moving northeast at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Marble Falls, Round Mountain, Horseshoe Bay, Johnson City, Spicewood,
Cypress Mill, Blowout, Sandy, Pedernales Falls State Park, Cottonwood
Shores and Sunrise Beach Village.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 3050 9813 3048 9812 3049 9810 3046 9811
      3022 9828 3032 9859 3060 9860
TIME...MOT...LOC 0147Z 205DEG 34KT 3041 9838 

HAIL...1.00IN
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, 8:19 PM CDT	Areal Flood Advisory	EWX	Bexar, Guadalupe, Wilson	3 hr
May 3, 8:23 PM CDT	Severe Thunderstorm Warning	EWX	Bexar, Guadalupe, Wilson	22 min
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.