Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 59, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 28, 2021, 3:42 PM CDT for Val Verde County, Texas. It was in force for 34 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 28, 2021, 3:42 PM CDT (20:42 UTC)
- Expired
- Apr 28, 2021, 4:16 PM CDT
- In force
- 34 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 107 km from the middle of the area, began a volume at 20:46 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 28, 3:10 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 8.7 hours before the alert went out and 57 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
- 2118 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 609 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 4.0
The text
As transmitted.
066
WUUS54 KEWX 282042
SVREWX
TXC465-282130-
/O.NEW.KEWX.SV.W.0059.210428T2042Z-210428T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
342 PM CDT Wed Apr 28 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Central Val Verde County in south central Texas...
* Until 430 PM CDT.
* At 342 PM CDT, a severe thunderstorm was located near Seminole
Canyon State Park, or 11 miles west of Comstock, moving northeast
at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Comstock, Seminole Canyon State Park, Bakers Crossing, Devils River
State Nat Area Del Norte and Pecos River Boat Ramp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.
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.
&&
A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.
LAT...LON 3011 10111 2992 10081 2959 10125 2962 10125
2963 10127 2957 10129 2959 10131 2965 10130
2966 10135 2965 10136 2970 10137 2971 10140
2974 10140
TIME...MOT...LOC 2042Z 215DEG 39KT 2964 10136
HAIL...1.00IN
WIND...60MPH
$$
BRADY3 follow-up statements
959
WWUS54 KEWX 282058
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
358 PM CDT Wed Apr 28 2021
TXC465-282130-
/O.CON.KEWX.SV.W.0059.000000T0000Z-210428T2130Z/
Val Verde TX-
358 PM CDT Wed Apr 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR CENTRAL VAL VERDE COUNTY...
At 358 PM CDT, a severe thunderstorm was located near Shumla, or 11
miles northwest of Comstock, moving north at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Seminole Canyon State Park, Bakers Crossing, Devils River State Nat
Area Del Norte and Pecos River Boat Ramp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2967 10135 2967 10136 2970 10137 2971 10140
2974 10140 3011 10111 2992 10081 2983 10093
2966 10133 2966 10135
TIME...MOT...LOC 2058Z 197DEG 36KT 2980 10132
HAIL...1.00IN
WIND...60MPH
$$
BRADY510
WWUS54 KEWX 282111
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
411 PM CDT Wed Apr 28 2021
TXC465-282130-
/O.CON.KEWX.SV.W.0059.000000T0000Z-210428T2130Z/
Val Verde TX-
411 PM CDT Wed Apr 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM CDT
FOR NORTHEASTERN VAL VERDE COUNTY...
At 410 PM CDT, a severe thunderstorm was located 13 miles northeast
of Shumla, or 16 miles north of Comstock, moving northeast at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Bakers Crossing and Devils River State Nat Area Del Norte.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2979 10124 2984 10132 3011 10111 2998 10090
TIME...MOT...LOC 2110Z 215DEG 39KT 2992 10123
HAIL...1.00IN
WIND...60MPH
$$
BRADY903
WWUS54 KEWX 282116
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
416 PM CDT Wed Apr 28 2021
TXC465-282126-
/O.CAN.KEWX.SV.W.0059.000000T0000Z-210428T2130Z/
Val Verde TX-
416 PM CDT Wed Apr 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN VAL VERDE COUNTY
IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail and
heavy rain are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1100 PM CDT for south central
Texas.
LAT...LON 2979 10124 2984 10132 3011 10111 2998 10090
TIME...MOT...LOC 2116Z 215DEG 39KT 2998 10118
$$
BRADYThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 3:34 PM CDT | Special Weather Statement | EWX | Val Verde | 41 min |
| Apr 28, 4:29 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Val Verde | 61 min |
| Apr 28, 5:25 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Uvalde | 65 min |
| Apr 28, 5:27 PM CDT | Special Weather Statement | EWX | Kinney | 48 min |
| Apr 28, 5:38 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Val Verde | 37 min |
| Apr 28, 6:09 PM CDT | Severe Thunderstorm Warning | EWX | Bandera, Kinney, Medina, Real, Uvalde | 66 min |
| Apr 28, 6:18 PM CDT | Special Weather Statement | EWX | Val Verde | 42 min |
| Apr 28, 6:47 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Val Verde | 58 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.