Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 184, NWS Austin/San Antonio, TX

September 30, 2021Val Verde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Sep 30, 2021, 7:49 PM CDT for Val Verde County, Texas. It was in force for 56 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
Sep 30, 2021, 7:49 PM CDT (00:49 UTC)
Expired
Sep 30, 2021, 8:45 PM CDT
In force
56 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 142 km from the middle of the area, began a volume at 00:49 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 nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.8 hours before the alert went out and 90 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 2021-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2844 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 2021-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.193958Sfc1 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
2844 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1576 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
135 m²/s²
Significant tornado parameter
0.6
Supercell composite
7.3

Open this sounding in Storm Lab

The text

As transmitted.

661 
WUUS54 KEWX 010049
SVREWX
TXC465-010145-
/O.NEW.KEWX.SV.W.0184.211001T0049Z-211001T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
749 PM CDT Thu Sep 30 2021

The National Weather Service in Austin San Antonio has issued a

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

* Until 845 PM CDT.

* At 748 PM CDT, a severe thunderstorm was located near Pumpville, or
  15 miles west of Langtry, moving northeast at 25 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...
  Langtry, Pumpville, Shumla and Pandale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.

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.

&&

LAT...LON 3008 10176 3025 10153 2980 10126 2977 10146
      2978 10145 2979 10147 2976 10154 2981 10155
      2980 10157 2977 10158 2977 10163 2976 10164
      2977 10166 2976 10168 2977 10169 2976 10171
      2978 10172 2978 10176
TIME...MOT...LOC 0048Z 239DEG 23KT 2987 10180 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MORRIS
2 follow-up statements
285 
WWUS54 KEWX 010111
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
811 PM CDT Thu Sep 30 2021

TXC465-010145-
/O.CON.KEWX.SV.W.0184.000000T0000Z-211001T0145Z/
Val Verde TX-
811 PM CDT Thu Sep 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHWESTERN VAL VERDE COUNTY...

At 811 PM CDT, a severe thunderstorm was located near Pumpville, or
11 miles northwest of Langtry, moving northeast 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...
Langtry, Pumpville, Shumla and Pandale. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3008 10176 3025 10153 2980 10126 2977 10146
      2978 10145 2979 10147 2976 10154 2981 10155
      2980 10157 2977 10158 2977 10163 2976 10164
      2977 10166 2976 10168 2977 10169 2976 10171
      2978 10172 2978 10176
TIME...MOT...LOC 0111Z 233DEG 25KT 2995 10165 

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MORRIS
116 
WWUS54 KEWX 010127
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
827 PM CDT Thu Sep 30 2021

TXC465-010145-
/O.CON.KEWX.SV.W.0184.000000T0000Z-211001T0145Z/
Val Verde TX-
827 PM CDT Thu Sep 30 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT
FOR NORTHWESTERN VAL VERDE COUNTY...

At 827 PM CDT, a severe thunderstorm was located 12 miles east of
Pumpville, or 13 miles north of Langtry, moving northeast at 25 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...
Langtry, Pumpville and Shumla. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3000 10175 3018 10149 2980 10126 2977 10146
      2978 10145 2979 10147 2976 10154 2981 10155
      2980 10157 2977 10158 2977 10163 2976 10164
      2977 10166 2976 10168 2977 10169 2976 10171
      2978 10172
TIME...MOT...LOC 0127Z 239DEG 23KT 3000 10155 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

MORRIS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 30, 7:15 PM CDTSpecial Weather StatementEWXTerrell45 min
Sep 30, 8:40 PM CDTSpecial Weather StatementEWXVal Verde50 min
Sep 30, 8:44 PM CDTSpecial Weather StatementEWXBurnet16 min
Sep 30, 9:26 PM CDTSpecial Weather StatementEWXVal Verde49 min
Sep 30, 9:55 PM CDTSevere Thunderstorm WarningEWXEdwards, Val Verde50 min
Sep 30, 10:22 PM CDTSpecial Weather StatementEWXVal Verde53 min
Sep 30, 10:41 PM CDTSpecial Weather StatementEWXEdwards, Real49 min
Sep 30, 11:12 PM CDTAreal Flood AdvisoryEWXEdwards, Val Verde3 hr
Sep 30, 11:19 PM CDTSpecial Weather StatementEWXKerr, Kinney, Real, Uvalde56 min
Sep 30, 11:33 PM CDTAreal Flood AdvisoryEWXVal Verde3 hr
Oct 1, 12:13 AM CDTAreal Flood AdvisoryEWXEdwards, Kerr, Real3 hr
Oct 1, 12:16 AM CDTSpecial Weather StatementEWXBandera, Kerr, Kinney, Uvalde44 min
Oct 1, 12:37 AM CDTAreal Flood AdvisoryEWXGillespie, Kerr3 hr
Oct 1, 12:48 AM CDTAreal Flood AdvisoryEWXKinney, Maverick, Uvalde, Val Verde3 hr
Oct 1, 12:58 AM CDTSpecial Weather StatementEWXUvalde62 min
Oct 1, 12:59 AM CDTSpecial Weather StatementEWXBandera, Gillespie, Kendall, Kerr, Llano46 min
Oct 1, 1:25 AM CDTAreal Flood AdvisoryEWXKinney, Uvalde, Zavala3 hr
Oct 1, 1:49 AM CDTFlash Flood Warning Considerable damage threatEWXKinney, Maverick, Uvalde, Zavala4 hr
Oct 1, 1:57 AM CDTSpecial Weather StatementEWXZavala63 min
Oct 1, 2:16 AM CDTAreal Flood AdvisoryEWXGillespie, Llano3 hr
Oct 1, 2:57 AM CDTAreal Flood AdvisoryEWXBurnet, Llano3 hr
Oct 1, 4:11 AM CDTAreal Flood AdvisoryEWXKinney, Maverick4 hr
Oct 1, 4:16 AM CDTAreal Flood AdvisoryEWXBexar3 hr
Oct 1, 4:26 AM CDTAreal Flood AdvisoryEWXHays, Travis, Williamson4 hr
Oct 1, 4:44 AM CDTFlash Flood Warning Considerable damage threatEWXTravis3 hr
Oct 1, 5:07 AM CDTAreal Flood AdvisoryEWXWilson3 hr
Oct 1, 6:37 AM CDTAreal Flood AdvisoryEWXBastrop3 hr
Oct 1, 6:46 AM CDTAreal Flood AdvisoryEWXBexar, Guadalupe3 hr
Oct 1, 6:37 PM CDTSpecial Weather StatementEWXTerrell38 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.