Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 197, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Dec 18, 2021, 10:49 AM CST for Bandera County, Medina County, Texas. It was in force for 41 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
- Dec 18, 2021, 10:49 AM CST (16:49 UTC)
- Expired
- Dec 18, 2021, 11:30 AM CST
- In force
- 41 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
Counties Bandera County, TX, Medina County, TX
The radar
The Laughlin AFB radar (KDFX), 109 km from the middle of the area, began a volume at 16:50 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, 11:12 AM CST | HAIL 1 | 2 Sse Tarpley, TX | PUBLIC REPORT OF 1 INCH HAIL NEAR TARPLEY. VIA SOCIAL MEDIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 4.8 hours before the alert went out and 159 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
- 1595 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 799 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 7 m²/s²
- Significant tornado parameter
- -0.3
- Supercell composite
- -2.0
The text
As transmitted.
605
WUUS54 KEWX 181649
SVREWX
TXC019-325-181730-
/O.NEW.KEWX.SV.W.0197.211218T1649Z-211218T1730Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1049 AM CST Sat Dec 18 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Northern Medina County in south central Texas...
Southern Bandera County in south central Texas...
* Until 1130 AM CST.
* At 1049 AM CST, a severe thunderstorm was located near Tarpley,
moving east at 20 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...
Bandera, Tarpley, Lakehills, Bandera Falls, Hill Country State
Natural Area, Mico and Lake Medina Shores.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 2948 9939 2968 9942 2978 9898 2952 9891
TIME...MOT...LOC 1649Z 256DEG 19KT 2958 9932
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH
$$
KCW3 follow-up statements
945 WWUS54 KEWX 181704 SVSEWX Severe Weather Statement National Weather Service Austin/San Antonio TX 1104 AM CST Sat Dec 18 2021 TXC019-325-181730- /O.CON.KEWX.SV.W.0197.000000T0000Z-211218T1730Z/ Medina TX-Bandera TX- 1104 AM CST Sat Dec 18 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 AM CST FOR NORTHEASTERN MEDINA AND SOUTHEASTERN BANDERA COUNTIES... At 1104 AM CST, a severe thunderstorm was located over Hill Country State Natural Area, or near Tarpley, moving east at 20 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Bandera, Lakehills, Hill Country State Natural Area, Mico, Bandera Falls and Lake Medina Shores. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2949 9923 2971 9928 2978 9898 2952 9891 TIME...MOT...LOC 1704Z 256DEG 19KT 2960 9923 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ KCW
467 WWUS54 KEWX 181715 SVSEWX Severe Weather Statement National Weather Service Austin/San Antonio TX 1115 AM CST Sat Dec 18 2021 TXC019-325-181730- /O.CON.KEWX.SV.W.0197.000000T0000Z-211218T1730Z/ Medina TX-Bandera TX- 1115 AM CST Sat Dec 18 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 AM CST FOR NORTHEASTERN MEDINA AND SOUTHEASTERN BANDERA COUNTIES... At 1114 AM CST, a severe thunderstorm was located near Hill Country State Natural Area, or 7 miles southwest of Bandera, moving east at 25 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. Locations impacted include... Bandera, Lakehills, Mico, Bandera Falls, Hill Country State Natural Area and Lake Medina Shores. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 2950 9914 2973 9921 2978 9898 2952 9891 TIME...MOT...LOC 1714Z 255DEG 24KT 2963 9912 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ KCW
283
WWUS54 KEWX 181721
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
1121 AM CST Sat Dec 18 2021
TXC019-325-181731-
/O.EXP.KEWX.SV.W.0197.000000T0000Z-211218T1730Z/
Medina TX-Bandera TX-
1121 AM CST Sat Dec 18 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MEDINA AND
SOUTHEASTERN BANDERA COUNTIES WILL EXPIRE AT 1130 AM CST...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
is still possible with this thunderstorm.
LAT...LON 2950 9914 2973 9921 2978 9898 2952 9891
TIME...MOT...LOC 1721Z 256DEG 19KT 2964 9910
$$
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, 10:09 AM CST | Severe Thunderstorm Warning | EWX | Wilson | 36 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, 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.