Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 194, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Dec 18, 2021, 10:09 AM CST for Wilson County, Texas. It was in force for 36 min. 3 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
- Dec 18, 2021, 10:09 AM CST (16:09 UTC)
- Expired
- Dec 18, 2021, 10:45 AM CST
- In force
- 36 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 52 km from the middle of the area, began a volume at 16:12 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 |
|---|---|---|---|
| Dec 18, 10:15 AM CST | HAIL 1 | 7 Nnw Floresville, TX | REPORT FROM MPING: QUARTER (1.00 IN.). |
| Dec 18, 10:16 AM CST | HAIL 1.25 | 1 N Sutherland Springs, TX | TRAINED SPOTTER REPORTED HAIL SLIGHTLY BIGGER THAN QUARTERS 3 MILES SE OF LA VERNIA. |
| Dec 18, 10:30 AM CST | HAIL 2 | 3 N Sutherland Springs, TX | PUBLIC REPORTS VIA SOCIAL MEDIA HAIL UP TO 2 INCHES IN DIAMETER. |
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, 4.2 hours before the alert went out and 185 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
- 2358 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 531 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 5.5
The text
As transmitted.
824
WUUS54 KEWX 181609
SVREWX
TXC493-181645-
/O.NEW.KEWX.SV.W.0194.211218T1609Z-211218T1645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1009 AM CST Sat Dec 18 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Central Wilson County in south central Texas...
* Until 1045 AM CST.
* At 1008 AM CST, a severe thunderstorm was located near Elmendorf,
or near Floresville, moving east at 30 mph.
HAZARD...Quarter size hail.
SOURCE...Public.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Floresville, Stockdale, Elmendorf, Sutherland Springs and Canada
Verde.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2920 9834 2929 9826 2938 9795 2938 9791
2918 9781 2909 9831
TIME...MOT...LOC 1608Z 256DEG 27KT 2920 9825
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
KCW1 follow-up statement
059
WWUS54 KEWX 181633
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
1033 AM CST Sat Dec 18 2021
TXC493-181645-
/O.CON.KEWX.SV.W.0194.000000T0000Z-211218T1645Z/
Wilson TX-
1033 AM CST Sat Dec 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM CST
FOR NORTHEASTERN WILSON COUNTY...
At 1032 AM CST, a severe thunderstorm was located over Sutherland
Springs, or near Stockdale, moving east at 30 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Stockdale and Sutherland Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2922 9812 2933 9814 2938 9795 2938 9791
2918 9781 2917 9806
TIME...MOT...LOC 1632Z 256DEG 27KT 2925 9804
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
KCWThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 2:04 AM CST | Special Weather Statement | EWX | Williamson | 41 min |
| Dec 18, 2:48 AM CST | Special Weather Statement | EWX | Williamson | 42 min |
| Dec 18, 4:59 AM CST | Special Weather Statement | EWX | Williamson | 16 min |
| Dec 18, 5:28 AM CST | Special Weather Statement | EWX | Burnet | 47 min |
| Dec 18, 6:07 AM CST | Special Weather Statement | EWX | Burnet | 53 min |
| Dec 18, 7:34 AM CST | Areal Flood Advisory | EWX | Travis, Williamson | 3 hr |
| Dec 18, 8:14 AM CST | Special Weather Statement | EWX | Caldwell | 46 min |
| Dec 18, 8:27 AM CST | Severe Thunderstorm Warning | EWX | Bastrop, Caldwell, Hays, Travis | 13 min |
| Dec 18, 9:11 AM CST | Special Weather Statement | EWX | Bexar | 49 min |
| Dec 18, 9:30 AM CST | Special Weather Statement | EWX | Real | 45 min |
| Dec 18, 9:55 AM CST | Special Weather Statement | EWX | Wilson | 50 min |
| Dec 18, 10:03 AM CST | Special Weather Statement | EWX | Uvalde | 42 min |
| Dec 18, 10:05 AM CST | Special Weather Statement | EWX | Kinney | 40 min |
| Dec 18, 10:21 AM CST | Severe Thunderstorm Warning | EWX | Bandera, Medina, Uvalde | 39 min |
| Dec 18, 10:25 AM CST | Severe Thunderstorm Warning | EWX | Gonzales, Guadalupe, Wilson | 35 min |
| Dec 18, 10:49 AM CST | Severe Thunderstorm Warning | EWX | Bandera, Medina | 41 min |
| Dec 18, 12:20 PM CST | Special Weather Statement | EWX | Goliad | 40 min |
| Dec 18, 12:38 PM CST | Special Weather Statement | EWX | DeWitt | 52 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.