Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 126, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 17, 2021, 12:05 PM CDT for Burnet County, Llano County, Texas. It was in force for 55 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 17, 2021, 12:05 PM CDT (17:05 UTC)
- Expired
- May 17, 2021, 1:00 PM CDT
- In force
- 55 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Burnet County, TX, Llano County, TX
The radar
The Ft Hood radar (KGRK), 96 km from the middle of the area, began a volume at 17:07 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 17, 12:33 PM CDT | HAIL 0.88 | 4 Ene Inks Lake State P, TX | PUBLIC REPORT OF PENNY TO NICKEL SIZED HAIL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 5.1 hours before the alert went out and 239 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.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -203 J/kg
- Mixed-layer LCL
- 1295 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
603
WUUS54 KEWX 171705
SVREWX
TXC053-299-171800-
/O.NEW.KEWX.SV.W.0126.210517T1705Z-210517T1800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1205 PM CDT Mon May 17 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 100 PM CDT.
* At 1204 PM CDT, a severe thunderstorm was located over Buchanan
Lake Village, or 8 miles north of Buchanan Dam, moving east at 25
mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Burnet, Marble Falls, Kingsland, Buchanan Dam, Buchanan Lake
Village, Inks Lake State Park, Watson, Bluffton, Lake Victor,
Sunnylane, Longhorn Cavern State Park, Tow and Shady Grove.
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.
&&
LAT...LON 3057 9819 3075 9856 3092 9849 3092 9842
3093 9841 3095 9842 3095 9845 3098 9844
3102 9845 3103 9844 3103 9792
TIME...MOT...LOC 1704Z 282DEG 21KT 3087 9845
HAIL...1.00IN
WIND...<50MPH
$$
PLATT2 follow-up statements
013
WWUS54 KEWX 171720
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
1220 PM CDT Mon May 17 2021
TXC053-299-171800-
/O.CON.KEWX.SV.W.0126.000000T0000Z-210517T1800Z/
Llano TX-Burnet TX-
1220 PM CDT Mon May 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR NORTHEASTERN LLANO AND NORTHWESTERN BURNET COUNTIES...
At 1220 PM CDT, a severe thunderstorm was located over Buchanan Dam,
moving east at 15 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Burnet, Marble Falls, Kingsland, Buchanan Dam, Buchanan Lake Village,
Lake Victor, Inks Lake State Park, Sunnylane, Longhorn Cavern State
Park, Watson and Shady Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
If on or near Lake Buchanan, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
&&
LAT...LON 3072 9851 3089 9846 3092 9842 3093 9841
3095 9842 3101 9838 3103 9792 3057 9819
TIME...MOT...LOC 1720Z 266DEG 14KT 3075 9842
HAIL...1.00IN
WIND...<50MPH
$$
PLATT342
WWUS54 KEWX 171736
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
1236 PM CDT Mon May 17 2021
TXC299-171744-
/O.CAN.KEWX.SV.W.0126.000000T0000Z-210517T1800Z/
Llano TX-
1236 PM CDT Mon May 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LLANO COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. **! Therefore, the warning has been cancelled.
LAT...LON 3066 9839 3084 9835 3091 9827 3091 9799
3057 9819
TIME...MOT...LOC 1734Z 278DEG 19KT 3075 9828
$$
TXC053-171800-
/O.CON.KEWX.SV.W.0126.000000T0000Z-210517T1800Z/
Burnet TX-
1236 PM CDT Mon May 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 PM CDT
FOR CENTRAL BURNET COUNTY...
At 1234 PM CDT, a severe thunderstorm was located over Burnet, moving
east at 20 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Burnet, Marble Falls, Lake Victor, Inks Lake State Park, Longhorn
Cavern State Park and Shady Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
If on or near Lake Buchanan, get away from the water and move
indoors or inside a vehicle. remember, lightning can strike out to
15 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3066 9839 3084 9835 3091 9827 3091 9799
3057 9819
TIME...MOT...LOC 1734Z 278DEG 19KT 3075 9828
HAIL...1.00IN
WIND...<50MPH
$$
PLATTThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 9:21 AM CDT | River Flood Warning | EWX | Frio | 19 hr |
| May 17, 11:36 AM CDT | Special Weather Statement | EWX | Burnet | 54 min |
| May 17, 11:58 AM CDT | Special Weather Statement | EWX | Burnet | 47 min |
| May 17, 1:00 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Travis, Williamson | 60 min |
| May 17, 1:53 PM CDT | Special Weather Statement | EWX | Bastrop, Hays, Travis, Williamson | 52 min |
| May 17, 2:34 PM CDT | Flash Flood Watch | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 19 more | 55 hr |
| May 17, 2:37 PM CDT | Special Weather Statement | EWX | Comal | 38 min |
| May 17, 3:16 PM CDT | Special Weather Statement | EWX | Fayette, Gonzales | 44 min |
| May 17, 3:25 PM CDT | Areal Flood Advisory | EWX | Fayette | 3 hr |
| May 17, 3:51 PM CDT | Special Weather Statement | EWX | Comal | 39 min |
| May 17, 3:59 PM CDT | Special Weather Statement | EWX | Gonzales, Lavaca | 61 min |
| May 17, 4:15 PM CDT | Areal Flood Advisory | EWX | Gonzales, Lavaca | 2 hr |
| May 17, 5:05 PM CDT | Special Weather Statement | EWX | Lavaca | 40 min |
| May 17, 6:08 PM CDT | Special Weather Statement | EWX | Val Verde | 52 min |
| May 17, 6:11 PM CDT | Special Weather Statement | EWX | Dimmit | 49 min |
| May 17, 6:46 PM CDT | Special Weather Statement | EWX | Dimmit | 44 min |
| May 17, 6:48 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 41 min |
| May 17, 6:50 PM CDT | Severe Thunderstorm Warning | EWX | Dimmit | 25 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Every 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.