Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 23, NWS Austin/San Antonio, TX

March 24, 2021Edwards County, Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Mar 24, 2021, 10:29 PM CDT for Edwards County, Val Verde County, Texas. It was in force for 61 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
Mar 24, 2021, 10:29 PM CDT (03:29 UTC)
Expired
Mar 24, 2021, 11:30 PM CDT
In force
61 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

Counties Edwards County, TX, Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 107 km from the middle of the area, began a volume at 03:33 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.

IssuedProductOfficeLasted
Mar 24, 9:52 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 3.5 hours before the alert went out and 93 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.

Skew-T log-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2021-03-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 479 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2021-03-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
479 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
2767 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
317 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

The text

As transmitted.

589 
WUUS54 KEWX 250329
SVREWX
TXC137-465-250430-
/O.NEW.KEWX.SV.W.0023.210325T0329Z-210325T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
1029 PM CDT Wed Mar 24 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Northwestern Edwards County in south central Texas...
  Northeastern Val Verde County in south central Texas...

* Until 1130 PM CDT.

* At 1028 PM CDT, a severe thunderstorm was located 20 miles north of
  Loma Alta, moving northeast at 40 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Juno, Vinegarone, Devils River State Nat Area Del Norte and Us-
  277 Near The Sutton-Edwards County Line.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 AM 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.

&&

A Tornado Watch remains in effect until 400 AM CDT for south central
Texas.

LAT...LON 3029 10076 3029 10012 3026 9997 2985 10100
      3014 10117
TIME...MOT...LOC 0328Z 228DEG 33KT 3020 10067 

HAIL...1.50IN
WIND...60MPH
 
$$

PLATT
1 follow-up statement
841 
WWUS54 KEWX 250345
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1045 PM CDT Wed Mar 24 2021

TXC137-465-250430-
/O.CON.KEWX.SV.W.0023.000000T0000Z-210325T0430Z/
Edwards TX-Val Verde TX-
1045 PM CDT Wed Mar 24 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHWESTERN EDWARDS AND NORTHEASTERN VAL VERDE COUNTIES...

At 1045 PM CDT, a severe thunderstorm was located 11 miles north of
Loma Alta, moving northeast at 40 mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees.

Locations impacted include...
Devils River State Nat Area Del Norte, Us-277 Near The Sutton-
Edwards County Line and Vinegarone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 400 AM CDT for south central
Texas.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3029 10076 3029 10012 3026 9997 2985 10100
      3011 10115
TIME...MOT...LOC 0345Z 229DEG 40KT 3007 10081 

HAIL...1.50IN
WIND...60MPH
 
$$

PLATT

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 24, 8:24 PM CDTSevere Thunderstorm WarningEWXEdwards47 min
Mar 24, 10:19 PM CDTSpecial Weather StatementEWXEdwards41 min
Mar 24, 11:06 PM CDTSevere Thunderstorm WarningEWXEdwards, Real, Val Verde54 min
Mar 24, 11:27 PM CDTSevere Thunderstorm WarningEWXGillespie, Llano63 min
Mar 24, 11:51 PM CDTSevere Thunderstorm WarningEWXEdwards, Kinney, Val Verde54 min
Mar 24, 11:59 PM CDTSevere Thunderstorm WarningEWXEdwards, Kerr, Real46 min
Mar 25, 12:44 AM CDTSevere Thunderstorm WarningEWXBandera, Edwards, Kinney, Real, Uvalde61 min
Mar 25, 1:44 AM CDTSevere Thunderstorm WarningEWXBandera, Kendall, Kerr, Medina, Real, Uvalde61 min
Mar 25, 2:44 AM CDTSpecial Weather StatementEWXKendall46 min
Mar 25, 3:24 AM CDTSpecial Weather StatementEWXBlanco36 min
Mar 25, 3:49 AM CDTSpecial Weather StatementEWXTravis41 min
Mar 25, 4:17 AM CDTSevere Thunderstorm WarningEWXTravis, Williamson32 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.