Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 121, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 11, 2021, 6:46 PM CDT for 4 counties in Texas. It was in force for 38 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 11, 2021, 6:46 PM CDT (23:46 UTC)
- Expired
- May 11, 2021, 7:24 PM CDT
- In force
- 38 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties DeWitt County, TX, Gonzales County, TX, Karnes County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 67 km from the middle of the area, began a volume at 23:48 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 11, 6:59 PM CDT | HAIL 0.5 | Gillett, TX | REPORT FROM MPING. HALF-INCH (0.50 IN.). |
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 11, 3:41 PM CDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 11.8 hours before the alert went out and 163 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
- 1953 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 825 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -2.5
The text
As transmitted.
451 WUUS54 KEWX 112346 SVREWX TXC123-177-255-493-120045- /O.NEW.KEWX.SV.W.0121.210511T2346Z-210512T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Austin/San Antonio TX 646 PM CDT Tue May 11 2021 The National Weather Service in Austin San Antonio has issued a * Severe Thunderstorm Warning for... Western DeWitt County in south central Texas... Northeastern Karnes County in south central Texas... Southwestern Gonzales County in south central Texas... East central Wilson County in south central Texas... * Until 745 PM CDT. * At 646 PM CDT, a severe thunderstorm was located near Pandora, or near Kosciusko, moving east at 50 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Stockdale, Kosciusko, Nixon, Runge, Smiley, Nordheim, Pandora, Gillett, Cheapside, Westhoff, Cotton Patch, Gruenau, New Davy, Sample, Ecleto and Helena. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2915 9804 2928 9796 2931 9738 2879 9762 TIME...MOT...LOC 2346Z 273DEG 42KT 2918 9787 HAIL...1.00IN WIND...<50MPH $$ PLATT
5 follow-up statements
175
WWUS54 KEWX 112349
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
649 PM CDT Tue May 11 2021
TXC123-177-255-493-120045-
/O.CON.KEWX.SV.W.0121.000000T0000Z-210512T0045Z/
DeWitt TX-Karnes TX-Gonzales TX-Wilson TX-
649 PM CDT Tue May 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR WESTERN DEWITT...NORTHEASTERN KARNES...SOUTHWESTERN GONZALES AND
EAST CENTRAL WILSON COUNTIES...
At 649 PM CDT, a severe thunderstorm was located near Gillett, or 8
miles northeast of Kosciusko, moving east at 50 mph.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
Locations impacted include...
Stockdale, Kosciusko, Nixon, Runge, Smiley, Nordheim, Pandora,
Gillett, Cheapside, Westhoff, Cotton Patch, Gruenau, New Davy,
Sample, Ecleto and Helena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2915 9804 2928 9796 2931 9738 2879 9762
TIME...MOT...LOC 2349Z 273DEG 42KT 2918 9782
HAIL...1.50IN
WIND...<50MPH
$$
PLATT252
WWUS54 KEWX 112355
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
655 PM CDT Tue May 11 2021
TXC123-177-255-493-120045-
/O.CON.KEWX.SV.W.0121.000000T0000Z-210512T0045Z/
DeWitt TX-Karnes TX-Gonzales TX-Wilson TX-
655 PM CDT Tue May 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR SOUTHWESTERN DEWITT...NORTHEASTERN KARNES...SOUTHWESTERN GONZALES
AND EAST CENTRAL WILSON COUNTIES...
At 654 PM CDT, a severe thunderstorm was located near Gillett, or 9
miles northeast of Kosciusko, moving east at 40 mph.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
Locations impacted include...
Kosciusko, Nixon, Runge, Smiley, Nordheim, Pandora, Gillett,
Cheapside, Westhoff, Cotton Patch, Gruenau, New Davy, Sample, Ecleto
and Helena.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2912 9800 2928 9790 2930 9739 2879 9762
TIME...MOT...LOC 2354Z 275DEG 34KT 2917 9781
HAIL...1.50IN
WIND...<50MPH
$$
PLATT828 WWUS54 KEWX 120003 SVSEWX Severe Weather Statement National Weather Service Austin/San Antonio TX 703 PM CDT Tue May 11 2021 TXC123-177-255-493-120045- /O.CON.KEWX.SV.W.0121.000000T0000Z-210512T0045Z/ DeWitt TX-Karnes TX-Gonzales TX-Wilson TX- 703 PM CDT Tue May 11 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR SOUTHWESTERN DEWITT...NORTHEASTERN KARNES...SOUTHWESTERN GONZALES AND EAST CENTRAL WILSON COUNTIES... At 702 PM CDT, a severe thunderstorm was located over Gillett, or 11 miles east of Kosciusko, moving east at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Nixon, Runge, Nordheim, Gillett, Westhoff, Cotton Patch, Gruenau, New Davy, Ecleto and Sample. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2909 9791 2926 9782 2927 9741 2879 9762 TIME...MOT...LOC 0002Z 289DEG 32KT 2914 9774 HAIL...1.00IN WIND...<50MPH $$ PLATT
445
WWUS54 KEWX 120012
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
712 PM CDT Tue May 11 2021
TXC493-120022-
/O.CAN.KEWX.SV.W.0121.000000T0000Z-210512T0045Z/
Wilson TX-
712 PM CDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WILSON 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 1000 PM CDT for
south central Texas.
LAT...LON 2910 9789 2922 9772 2915 9746 2879 9762
2886 9769
TIME...MOT...LOC 0012Z 281DEG 20KT 2912 9776
$$
TXC123-177-255-120045-
/O.CON.KEWX.SV.W.0121.000000T0000Z-210512T0045Z/
DeWitt TX-Karnes TX-Gonzales TX-
712 PM CDT Tue May 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR SOUTHWESTERN DEWITT...NORTHEASTERN KARNES AND SOUTH CENTRAL
GONZALES COUNTIES...
At 712 PM CDT, a severe thunderstorm was located over Gillett, or 10
miles east of Kosciusko, moving east at 25 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Runge, Nordheim, Gillett, Cotton Patch, Gruenau, New Davy and Ecleto.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2910 9789 2922 9772 2915 9746 2879 9762
2886 9769
TIME...MOT...LOC 0012Z 281DEG 20KT 2912 9776
HAIL...1.00IN
WIND...<50MPH
$$
PLATT409
WWUS54 KEWX 120024
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
724 PM CDT Tue May 11 2021
TXC123-177-255-120034-
/O.CAN.KEWX.SV.W.0121.000000T0000Z-210512T0045Z/
DeWitt TX-Karnes TX-Gonzales TX-
724 PM CDT Tue May 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN DEWITT...
NORTHEASTERN KARNES AND SOUTH CENTRAL GONZALES COUNTIES IS
CANCELLED...
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 has been cancelled. However small hail and
heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
south central Texas.
LAT...LON 2910 9789 2922 9772 2915 9746 2879 9762
2886 9769
TIME...MOT...LOC 0023Z 273DEG 42KT 2911 9760
$$
PLATTThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:14 PM CDT | Severe Thunderstorm Warning | EWX | Edwards | 16 min |
| May 10, 7:49 PM CDT | Areal Flood Advisory | EWX | Dimmit, Maverick | 3 hr |
| May 10, 7:55 PM CDT | Special Weather Statement | EWX | Kinney | 50 min |
| May 10, 8:00 PM CDT | Special Weather Statement | EWX | Dimmit, Maverick, Zavala | 45 min |
| May 10, 8:06 PM CDT | Severe Thunderstorm Warning | EWX | Edwards, Kinney, Maverick, Real, Uvalde, Zavala | 54 min |
| May 10, 8:31 PM CDT | Tornado Warning | EWX | Kinney, Uvalde | 16 min |
| May 10, 8:52 PM CDT | Special Weather Statement | EWX | Frio, Zavala | 38 min |
| May 10, 8:58 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Edwards, Kerr, Kinney, Medina, Real and 1 more | 62 min |
| May 10, 9:09 PM CDT | Areal Flood Advisory | EWX | Dimmit, Zavala | 3 hr |
| May 10, 9:20 PM CDT | Areal Flood Advisory | EWX | Kinney, Maverick, Uvalde, Zavala | 3 hr |
| May 10, 9:30 PM CDT | Special Weather Statement | EWX | Frio, Medina | 60 min |
| May 10, 9:52 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Medina, Uvalde | 53 min |
| May 10, 10:42 PM CDT | Areal Flood Advisory | EWX | Medina, Uvalde | 3 hr |
| May 10, 10:45 PM CDT | Special Weather Statement | EWX | Bexar | 45 min |
| May 10, 11:17 PM CDT | Special Weather Statement | EWX | Bexar | 43 min |
| May 11, 3:51 PM CDT | Areal Flood Advisory | EWX | Kendall | 2 hr |
| May 11, 4:03 PM CDT | Special Weather Statement | EWX | Atascosa | 42 min |
| May 11, 4:23 PM CDT | Special Weather Statement | EWX | Caldwell | 52 min |
| May 11, 4:24 PM CDT | Special Weather Statement | EWX | Guadalupe | 51 min |
| May 11, 4:45 PM CDT | Special Weather Statement | EWX | Atascosa | 45 min |
| May 11, 4:59 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Bexar, Wilson | 61 min |
| May 11, 5:20 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Bexar | 25 min |
| May 11, 5:30 PM CDT | Areal Flood Advisory | EWX | Atascosa, Bexar, Frio, Medina | 3 hr |
| May 11, 5:46 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Medina | 44 min |
| May 11, 5:47 PM CDT | Special Weather Statement | EWX | Guadalupe | 43 min |
| May 11, 6:13 PM CDT | Special Weather Statement | EWX | Wilson | 47 min |
| May 11, 6:31 PM CDT | Special Weather Statement | EWX | Dimmit | 44 min |
| May 11, 6:36 PM CDT | Special Weather Statement | EWX | Frio, Medina | 39 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.