Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 45, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 15, 2021, 2:57 PM CDT for Burnet County, Llano County, Texas. It was in force for 63 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
- Apr 15, 2021, 2:57 PM CDT (19:57 UTC)
- Expired
- Apr 15, 2021, 4:00 PM CDT
- In force
- 63 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), 90 km from the middle of the area, began a volume at 20:00 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 |
|---|---|---|---|
| Apr 15, 8:36 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 8.0 hours before the alert went out and 229 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 629 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
999
WUUS54 KEWX 151957
SVREWX
TXC053-299-152100-
/O.NEW.KEWX.SV.W.0045.210415T1957Z-210415T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
257 PM CDT Thu Apr 15 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Northeastern Llano County in south central Texas...
Northern Burnet County in south central Texas...
* Until 400 PM CDT.
* At 256 PM CDT, a severe thunderstorm was located near Tow, or 15
miles north of Buchanan Dam, moving east at 40 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Buchanan Lake Village, Lake Victor, Mahomet, Sunnylane, Joppa,
Watson, Briggs, 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 3102 9790 3091 9783 3078 9797 3088 9859
3092 9858 3093 9842 3094 9841 3095 9845
3096 9845 3098 9844 3101 9846 3103 9844
3103 9816
TIME...MOT...LOC 1956Z 277DEG 37KT 3097 9849
HAIL...1.00IN
WIND...<50MPH
$$
BF4 follow-up statements
318
WWUS54 KEWX 152011
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
311 PM CDT Thu Apr 15 2021
TXC299-152020-
/O.CAN.KEWX.SV.W.0045.000000T0000Z-210415T2100Z/
Llano TX-
311 PM CDT Thu Apr 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LLANO COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 500 PM CDT for
south central Texas.
LAT...LON 3102 9790 3091 9783 3078 9797 3085 9842
3087 9843 3087 9845 3088 9846 3089 9845
3093 9844 3092 9842 3093 9841 3095 9843
3103 9839
TIME...MOT...LOC 2010Z 277DEG 37KT 3095 9832
$$
TXC053-152100-
/O.CON.KEWX.SV.W.0045.000000T0000Z-210415T2100Z/
Burnet TX-
311 PM CDT Thu Apr 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHERN BURNET COUNTY...
At 310 PM CDT, a severe thunderstorm was located 8 miles west of Lake
Victor, or 11 miles southwest of Lampasas, moving east at 45 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...
Buchanan Lake Village, Lake Victor, Mahomet, Sunnylane, Joppa,
Watson, Briggs and Shady Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3102 9790 3091 9783 3078 9797 3085 9842
3087 9843 3087 9845 3088 9846 3089 9845
3093 9844 3092 9842 3093 9841 3095 9843
3103 9839
TIME...MOT...LOC 2010Z 277DEG 37KT 3095 9832
HAIL...1.50IN
WIND...60MPH
$$
KCW312
WWUS54 KEWX 152027
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
327 PM CDT Thu Apr 15 2021
TXC053-152100-
/O.CON.KEWX.SV.W.0045.000000T0000Z-210415T2100Z/
Burnet TX-
327 PM CDT Thu Apr 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHERN BURNET COUNTY...
At 326 PM CDT, a severe thunderstorm was located over Sunnylane, or
10 miles south of Lampasas, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lake Victor, Mahomet, Sunnylane, Joppa, Watson, Briggs and Shady
Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3091 9783 3078 9797 3084 9833 3103 9819
3102 9790
TIME...MOT...LOC 2026Z 277DEG 37KT 3093 9812
HAIL...0.75IN
WIND...60MPH
$$
KCW489
WWUS54 KEWX 152039
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
339 PM CDT Thu Apr 15 2021
TXC053-152100-
/O.CON.KEWX.SV.W.0045.000000T0000Z-210415T2100Z/
Burnet TX-
339 PM CDT Thu Apr 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTHEASTERN BURNET COUNTY...
At 339 PM CDT, a severe thunderstorm was located over Briggs, or 13
miles northeast of Bertram, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Joppa, Mahomet, Watson, Briggs and Shady Grove.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3091 9783 3078 9797 3082 9819 3093 9807
3102 9803 3102 9790
TIME...MOT...LOC 2039Z 277DEG 37KT 3091 9796
HAIL...0.75IN
WIND...60MPH
$$
KCW404
WWUS54 KEWX 152051
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
351 PM CDT Thu Apr 15 2021
TXC053-152101-
/O.EXP.KEWX.SV.W.0045.000000T0000Z-210415T2100Z/
Burnet TX-
351 PM CDT Thu Apr 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BURNET COUNTY
WILL EXPIRE AT 400 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 500 PM CDT for
south central Texas.
LAT...LON 3091 9783 3078 9797 3082 9819 3093 9807
3102 9803 3102 9790
TIME...MOT...LOC 2051Z 277DEG 37KT 3090 9783
$$
KCWThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 7:34 AM CDT | Special Weather Statement | EWX | Kinney | 41 min |
| Apr 15, 8:12 AM CDT | Special Weather Statement | EWX | Edwards | 48 min |
| Apr 15, 8:14 AM CDT | Special Weather Statement | EWX | Kinney | 46 min |
| Apr 15, 8:31 AM CDT | Severe Thunderstorm Warning | EWX | Edwards, Val Verde | 59 min |
| Apr 15, 8:40 AM CDT | Severe Thunderstorm Warning | EWX | Kinney | 65 min |
| Apr 15, 8:55 AM CDT | Special Weather Statement | EWX | Edwards | 50 min |
| Apr 15, 9:04 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 24 min |
| Apr 15, 9:32 AM CDT | Severe Thunderstorm Warning | EWX | Edwards | 17 min |
| Apr 15, 9:42 AM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde | 63 min |
| Apr 15, 10:42 AM CDT | Severe Thunderstorm Warning | EWX | Uvalde | 45 min |
| Apr 15, 12:15 PM CDT | Severe Thunderstorm Warning | EWX | Gillespie, Llano | 60 min |
| Apr 15, 1:07 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Llano, Travis | 53 min |
| Apr 15, 1:52 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 36 min |
| Apr 15, 2:07 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 40 min |
| Apr 15, 3:21 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Williamson | 54 min |
| Apr 15, 3:56 PM CDT | Severe Thunderstorm Warning | EWX | Travis, Williamson | 49 min |
| Apr 15, 4:11 PM CDT | Special Weather Statement | EWX | Williamson | 49 min |
| Apr 15, 4:36 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Lee, Travis, Williamson | 54 min |
| Apr 15, 5:22 PM CDT | Severe Thunderstorm Warning | EWX | Bastrop, Fayette, Lee | 29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.