Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 141, NWS Austin/San Antonio, TX

May 28, 2021Burnet County, Llano County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 28, 2021, 5:28 PM CDT for Burnet County, Llano County, Texas. It was in force for 62 min. 1 report 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 28, 2021, 5:28 PM CDT (22:28 UTC)
Expired: May 28, 2021, 6:30 PM CDT
In force: 62 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Tornado: Possible
Hail: 2.0 in
Wind: 50.0 mph

Counties Burnet County, TX, Llano County, TX

The radar

The Ft Hood radar (KGRK), 79 km from the middle of the area, began a volume at 22:31 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 28, 6:00 PM CDT	TSTM WND DMG	1 Se Cottonwood Shores, TX	DELAYED REPORT OF TREES DOWN ON 2147 OUTSIDE OF COTTONWOOD SHORES. TIME APPROXIMATE.

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 28, 12:14 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 10.5 hours before the alert went out and 238 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: 313 J/kg
Mixed-layer CIN: -386 J/kg
Mixed-layer LCL: 694 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted.

003 
WUUS54 KEWX 282228
SVREWX
TXC053-299-282330-
/O.NEW.KEWX.SV.W.0141.210528T2228Z-210528T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
528 PM CDT Fri May 28 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Northeastern Llano County in south central Texas...
  Burnet County in south central Texas...

* Until 630 PM CDT.

* At 526 PM CDT, severe thunderstorms were located along a line
  extending from 6 miles east of Buchanan Lake Village to near
  Buchanan Dam to near Stolz, moving east at 20 mph.

  HAZARD...Two inch hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Burnet, Marble Falls, Kingsland, Llano, Bertram, Buchanan Dam,
  Granite Shoals, Meadowlakes, Buchanan Lake Village, Highland Haven,
  Inks Lake State Park, Spicewood, Watson, Bluffton, Lake Victor,
  Stolz, Joppa, Shady Grove, Lone Grove and Oatmeal.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Buchanan, Inks Lake, and Lake Marble Falls, get 
away from the water and move indoors or inside a vehicle. Remember, 
lightning can strike out to 15 miles from the parent thunderstorm. 
If you can hear thunder, you are close enough to be struck by 
lightning. Move to safe shelter now!  Do not be caught on the water 
in a thunderstorm.

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

&&

LAT...LON 3099 9788 3044 9815 3079 9868 3094 9840
TIME...MOT...LOC 2226Z 283DEG 17KT 3087 9833 3078 9839 3080 9853 

TORNADO...POSSIBLE
HAIL...2.00IN
WIND...<50MPH
 
$$

CP

2 follow-up statements

168 
WWUS54 KEWX 282241
SVSEWX

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

TXC053-299-282330-
/O.CON.KEWX.SV.W.0141.000000T0000Z-210528T2330Z/
Llano TX-Burnet TX-
541 PM CDT Fri May 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHEASTERN LLANO AND BURNET COUNTIES...

At 540 PM CDT, severe thunderstorms were located along a line
extending from near Lake Victor to near Burnet to near Buchanan Dam,
moving southeast at 25 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

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...
Burnet, Marble Falls, Kingsland, Llano, Bertram, Buchanan Dam,
Granite Shoals, Meadowlakes, Buchanan Lake Village, Highland Haven,
Inks Lake State Park, Spicewood, Watson, Bluffton, Lake Victor,
Stolz, Joppa, Shady Grove, Lone Grove and Oatmeal.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Buchanan, Inks Lake, and Lake Marble Falls, get 
away from the water and move indoors or inside a vehicle. remember, 
lightning can strike out to 15 miles from the parent thunderstorm. 
If you can hear thunder, you are close enough to be struck by 
lightning. Move to safe shelter now!  Do not be caught on the water 
in a thunderstorm.

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

&&

LAT...LON 3099 9788 3044 9815 3079 9868 3094 9840
TIME...MOT...LOC 2240Z 295DEG 20KT 3085 9824 3076 9830 3078 9844 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

CP

011 
WWUS54 KEWX 282258
SVSEWX

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

TXC053-299-282330-
/O.CON.KEWX.SV.W.0141.000000T0000Z-210528T2330Z/
Llano TX-Burnet TX-
558 PM CDT Fri May 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR NORTHEASTERN LLANO AND BURNET COUNTIES...

At 558 PM CDT, severe thunderstorms were located along a line
extending from near Oatmeal to 6 miles northwest of Smithwick to near
Longhorn Cavern State Park, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and ping pong ball size hail.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
Burnet, Marble Falls, Kingsland, Llano, Bertram, Buchanan Dam,
Granite Shoals, Meadowlakes, Buchanan Lake Village, Highland Haven,
Inks Lake State Park, Spicewood, Watson, Bluffton, Lake Victor,
Stolz, Joppa, Shady Grove, Lone Grove and Oatmeal.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake Marble Falls, get away from the water and move 
indoors or inside a vehicle. remember, lightning can strike out to 
15 miles from the parent thunderstorm. If you can hear thunder, you 
are close enough to be struck by lightning. Move to safe shelter 
now!  Do not be caught on the water in a thunderstorm.

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

&&

LAT...LON 3099 9788 3044 9815 3079 9868 3090 9831
TIME...MOT...LOC 2258Z 319DEG 25KT 3075 9814 3064 9819 3066 9833 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...70MPH
 
$$

CP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:15 PM CDT	Special Weather Statement	EWX	Val Verde	45 min
May 27, 8:15 PM CDT	Special Weather Statement	EWX	Val Verde	45 min
May 27, 8:48 PM CDT	Special Weather Statement	EWX	Val Verde	42 min
May 28, 4:38 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	52 min
May 28, 5:07 PM CDT	Special Weather Statement	EWX	Llano	38 min
May 28, 5:15 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	60 min
May 28, 5:33 PM CDT	Special Weather Statement	EWX	Llano	42 min
May 28, 5:50 PM CDT	Severe Thunderstorm Warning	EWX	Llano	40 min
May 28, 6:06 PM CDT	Areal Flood Advisory	EWX	Burnet, Llano	3 hr
May 28, 6:12 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Travis, Williamson	63 min
May 28, 6:26 PM CDT	Special Weather Statement	EWX	Burnet	34 min
May 28, 6:39 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie	66 min
May 28, 6:46 PM CDT	Areal Flood Advisory	EWX	Travis, Williamson	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.