Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 57, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 23, 2021, 7:42 PM CDT for Bexar County, Wilson County, Texas. It was in force for 48 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
- Apr 23, 2021, 7:42 PM CDT (00:42 UTC)
- Expired
- Apr 23, 2021, 8:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Bexar County, TX, Wilson County, TX
The radar
The Austin/San Antonio radar (KEWX), 53 km from the middle of the area, began a volume at 00:47 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 |
|---|---|---|---|
| Apr 23, 7:42 PM CDT | HAIL 0.5 | 3 Ene Calaveras Lake, 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 |
|---|---|---|---|
| Apr 23, 7:05 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 00:00Z, 0.7 hours before the alert went out and 181 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
- 1602 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 883 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted.
426
WUUS54 KEWX 240042
SVREWX
TXC029-493-240130-
/O.NEW.KEWX.SV.W.0057.210424T0042Z-210424T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
742 PM CDT Fri Apr 23 2021
The National Weather Service in Austin San Antonio has issued a
* Severe Thunderstorm Warning for...
Central Wilson County in south central Texas...
Southeastern Bexar County in south central Texas...
* Until 830 PM CDT.
* At 742 PM CDT, severe thunderstorms were located along a line
extending from near La Vernia to near Elmendorf, moving southeast
at 30 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...
Floresville, Poth, Stockdale, St. Hedwig, Elmendorf, La Vernia,
Pandora, Calaveras Lake, Sutherland Springs, Parita and Canada
Verde.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.
Large hail, damaging winds, and continuous cloud to ground lightning
are occurring with these storms. 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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2927 9779 2900 9808 2922 9835 2939 9825
TIME...MOT...LOC 0042Z 298DEG 26KT 2930 9817 2918 9835
HAIL...1.00IN
WIND...60MPH
$$
BRADY1 follow-up statement
172
WWUS54 KEWX 240104
SVSEWX
Severe Weather Statement
National Weather Service Austin/San Antonio TX
804 PM CDT Fri Apr 23 2021
TXC029-240114-
/O.CAN.KEWX.SV.W.0057.000000T0000Z-210424T0130Z/
Bexar TX-
804 PM CDT Fri Apr 23 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BEXAR COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
south central Texas.
LAT...LON 2912 9823 2934 9804 2927 9779 2900 9808
TIME...MOT...LOC 0104Z 298DEG 26KT 2923 9801 2911 9819
$$
TXC493-240130-
/O.CON.KEWX.SV.W.0057.000000T0000Z-210424T0130Z/
Wilson TX-
804 PM CDT Fri Apr 23 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR CENTRAL WILSON COUNTY...
At 804 PM CDT, severe thunderstorms were located along a line
extending from near Stockdale to near Floresville, moving southeast
at 30 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...
Floresville, Poth, Stockdale, Pandora and Sutherland Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 2912 9823 2934 9804 2927 9779 2900 9808
TIME...MOT...LOC 0104Z 298DEG 26KT 2923 9801 2911 9819
HAIL...1.00IN
WIND...60MPH
$$
BRADYThe office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 7:16 PM CDT | Severe Thunderstorm Warning | EWX | Bexar, Wilson | 29 min |
| Apr 23, 7:32 PM CDT | Special Weather Statement | EWX | Guadalupe | 43 min |
| Apr 23, 7:39 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa, Karnes | 51 min |
| Apr 23, 8:14 PM CDT | Severe Thunderstorm Warning | EWX | DeWitt, Gonzales, Karnes, Wilson | 46 min |
| Apr 23, 8:31 PM CDT | Special Weather Statement | EWX | Karnes | 44 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.