Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 105, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 4, 2021, 10:04 AM CDT for Bastrop County, Caldwell County, Fayette County, Texas. It was in force for 41 min. 2 reports 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 4, 2021, 10:04 AM CDT (15:04 UTC)
- Expired
- May 4, 2021, 10:45 AM CDT
- In force
- 41 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Bastrop County, TX, Caldwell County, TX, Fayette County, TX
The radar
The Austin/San Antonio radar (KEWX), 53 km from the middle of the area, began a volume at 15:07 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 4, 10:11 AM CDT | HAIL 0.25 | 1 S Lockhart, TX | |
| May 4, 10:13 AM CDT | HAIL 1 | 1 Se Lockhart, TX |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 3.1 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.
- Mixed-layer CAPE
- 2898 J/kg
- Mixed-layer CIN
- -186 J/kg
- Mixed-layer LCL
- 493 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.6
The text
As transmitted.
605 WUUS54 KEWX 041504 SVREWX TXC021-055-149-041545- /O.NEW.KEWX.SV.W.0105.210504T1504Z-210504T1545Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Austin/San Antonio TX 1004 AM CDT Tue May 4 2021 The National Weather Service in Austin San Antonio has issued a * Severe Thunderstorm Warning for... Central Caldwell County in south central Texas... Southern Bastrop County in south central Texas... West central Fayette County in south central Texas... * Until 1045 AM CDT. * At 1004 AM CDT, a severe thunderstorm was located near Lockhart, moving east at 40 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Lockhart, Smithville, Rosanky, Fentress, Upton, Brownsboro, Delhi, Hills Prairie, Joliet, Rockne, Watterson, Maxwell, Red Rock, Buescher State Park, Lytton Springs, Taylorsville, Togo, Tilmon, String Prairie and Alum Creek. 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 2974 9777 2991 9782 3010 9713 2984 9706 TIME...MOT...LOC 1504Z 256DEG 37KT 2984 9772 HAIL...1.00IN WIND...<50MPH $$ BRADY
3 follow-up statements
767 WWUS54 KEWX 041517 SVSEWX Severe Weather Statement National Weather Service Austin/San Antonio TX 1017 AM CDT Tue May 4 2021 TXC021-055-149-041545- /O.CON.KEWX.SV.W.0105.000000T0000Z-210504T1545Z/ Caldwell TX-Bastrop TX-Fayette TX- 1017 AM CDT Tue May 4 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT FOR CENTRAL CALDWELL...SOUTHERN BASTROP AND WEST CENTRAL FAYETTE COUNTIES... At 1017 AM CDT, a severe thunderstorm was located near Lockhart, moving east at 45 mph. HAZARD...Quarter size hail. SOURCE...Emergency management. IMPACT...Damage to vehicles is expected. Locations impacted include... Lockhart, Smithville, Rosanky, Fentress, Upton, Brownsboro, Delhi, Hills Prairie, Joliet, Rockne, Watterson, Maxwell, Red Rock, Buescher State Park, Lytton Springs, Taylorsville, Togo, Tilmon, String Prairie and Alum Creek. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2974 9777 2991 9782 3010 9713 2984 9706 TIME...MOT...LOC 1517Z 256DEG 37KT 2987 9757 HAIL...1.00IN WIND...<50MPH $$ BRADY
451
WWUS54 KEWX 041522
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
1022 AM CDT Tue May 4 2021
TXC021-055-149-041545-
/O.CON.KEWX.SV.W.0105.000000T0000Z-210504T1545Z/
Caldwell TX-Bastrop TX-Fayette TX-
1022 AM CDT Tue May 4 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT
FOR CENTRAL CALDWELL...SOUTHWESTERN BASTROP AND WEST CENTRAL FAYETTE
COUNTIES...
At 1022 AM CDT, a severe thunderstorm was located 8 miles east of
Lockhart, moving east at 40 mph.
HAZARD...Quarter size hail.
SOURCE...Emergency management.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Rosanky, Upton, Brownsboro, Delhi, Hills Prairie, Togo, Tilmon,
Rockne, String Prairie, Watterson, Red Rock, McMahan, Lytton Springs,
Kovar, Dale, Bateman, St John Colony, Taylorsville and Jeddo.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2977 9759 2995 9765 2998 9757 3007 9722
2984 9714
TIME...MOT...LOC 1522Z 253DEG 34KT 2989 9754
HAIL...1.00IN
WIND...<50MPH
$$
BRADY343
WWUS54 KEWX 041536
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
1036 AM CDT Tue May 4 2021
TXC021-055-149-041546-
/O.EXP.KEWX.SV.W.0105.000000T0000Z-210504T1545Z/
Caldwell TX-Bastrop TX-Fayette TX-
1036 AM CDT Tue May 4 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CALDWELL...
SOUTHWESTERN BASTROP AND WEST CENTRAL FAYETTE COUNTIES WILL EXPIRE AT
1045 AM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
is still possible with this thunderstorm.
LAT...LON 2977 9759 2995 9765 2998 9757 3007 9722
2984 9714
TIME...MOT...LOC 1536Z 256DEG 37KT 2992 9739
$$
BRADYThe 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, 8:12 PM CDT | Severe Thunderstorm Warning | EWX | Blanco, Burnet, Gillespie, Kendall, Llano | 48 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, 10:38 AM CDT | Special Weather Statement | EWX | Bastrop | 37 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.