Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 115, NWS Austin/San Antonio, TX

May 10, 20216 counties in Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 10, 2021, 8:06 PM CDT for 6 counties in Texas. It was in force for 54 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
May 10, 2021, 8:06 PM CDT (01:06 UTC)
Expired
May 10, 2021, 9:00 PM CDT
In force
54 min
Issued by
NWS Austin/San Antonio, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Edwards County, TX, Kinney County, TX, Maverick County, TX, Real County, TX, Uvalde County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 43 km from the middle of the area, began a volume at 01:05 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

TimeReportWhereRemark
May 10, 8:53 PM CDTHAIL 0.2518 W Uvalde, TXPEA SIZE HAIL IN CLINE.

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.

IssuedProductOfficeLasted
May 10, 1:48 PM CDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 1.1 hours before the alert went out and 95 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 2021-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3006 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 2021-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.19395878Sfc1 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
3006 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1131 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.1

Open this sounding in Storm Lab

The text

As transmitted.

195 
WUUS54 KEWX 110106
SVREWX
TXC137-271-323-385-463-507-110200-
/O.NEW.KEWX.SV.W.0115.210511T0106Z-210511T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
806 PM CDT Mon May 10 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Eastern Kinney County in south central Texas...
  Northeastern Maverick County in south central Texas...
  Uvalde County in south central Texas...
  Northwestern Zavala County in south central Texas...
  South central Edwards County in south central Texas...
  Southern Real County in south central Texas...

* Until 900 PM CDT.

* At 806 PM CDT, severe thunderstorms were located along a line
  extending from near Darling to 14 miles northwest of Cometa, moving
  northeast at 50 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...
  Uvalde, Leakey, Spofford, Camp Wood, Laguna, Knippa, Blewett,
  Barksdale, Rio Frio, Concan, Darling, Washer, Uvalde Estates,
  Montell, Dabney, Cline, Garner State Park, Anacacho, Reagan Wells
  and Utopia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 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 2903 10048 2986 10018 2966 9960 2963 9960
      2963 9951 2959 9941 2949 9941 2873 10007
TIME...MOT...LOC 0106Z 203DEG 43KT 2903 10040 2885 10015 

HAIL...1.00IN
WIND...60MPH
 
$$

BRADY
1 follow-up statement
152 
WWUS54 KEWX 110143
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
843 PM CDT Mon May 10 2021

TXC323-110152-
/O.CAN.KEWX.SV.W.0115.000000T0000Z-210511T0200Z/
Maverick TX-
843 PM CDT Mon May 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MAVERICK 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 1000 PM CDT for
south central Texas.

LAT...LON 2905 10011 2909 10012 2908 10019 2918 10043
      2986 10018 2966 9960 2963 9960 2963 9950
      2959 9941 2949 9941 2896 9988
TIME...MOT...LOC 0142Z 230DEG 41KT 2941 10021 2921 9978 

$$

TXC137-271-385-463-507-110200-
/O.CON.KEWX.SV.W.0115.000000T0000Z-210511T0200Z/
Kinney TX-Uvalde TX-Zavala TX-Edwards TX-Real TX-
843 PM CDT Mon May 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR EASTERN KINNEY...UVALDE...NORTHWESTERN ZAVALA...SOUTH CENTRAL
EDWARDS AND SOUTHERN REAL COUNTIES...

At 842 PM CDT, severe thunderstorms were located along a line
extending from 11 miles northwest of Cline to Uvalde, moving
northeast at 45 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Uvalde, Leakey, Spofford, Camp Wood, Laguna, Knippa, Blewett,
Barksdale, Rio Frio, Concan, Washer, Uvalde Estates, Montell, Dabney,
Cline, Garner State Park, Anacacho, Reagan Wells, Utopia and Turkey
Mountain.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is 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 2905 10011 2909 10012 2908 10019 2918 10043
      2986 10018 2966 9960 2963 9960 2963 9950
      2959 9941 2949 9941 2896 9988
TIME...MOT...LOC 0142Z 230DEG 41KT 2941 10021 2921 9978 

TORNADO...POSSIBLE
HAIL...0.88IN
WIND...60MPH
 
$$

BRADY

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 7:14 PM CDTSevere Thunderstorm WarningEWXEdwards16 min
May 10, 7:49 PM CDTAreal Flood AdvisoryEWXDimmit, Maverick3 hr
May 10, 7:55 PM CDTSpecial Weather StatementEWXKinney50 min
May 10, 8:00 PM CDTSpecial Weather StatementEWXDimmit, Maverick, Zavala45 min
May 10, 8:31 PM CDTTornado WarningEWXKinney, Uvalde16 min
May 10, 8:52 PM CDTSpecial Weather StatementEWXFrio, Zavala38 min
May 10, 8:58 PM CDTSevere Thunderstorm WarningEWXBandera, Edwards, Kerr, Kinney, Medina, Real and 1 more62 min
May 10, 9:09 PM CDTAreal Flood AdvisoryEWXDimmit, Zavala3 hr
May 10, 9:20 PM CDTAreal Flood AdvisoryEWXKinney, Maverick, Uvalde, Zavala3 hr
May 10, 9:30 PM CDTSpecial Weather StatementEWXFrio, Medina60 min
May 10, 9:52 PM CDTSevere Thunderstorm WarningEWXBandera, Medina, Uvalde53 min
May 10, 10:42 PM CDTAreal Flood AdvisoryEWXMedina, Uvalde3 hr
May 10, 10:45 PM CDTSpecial Weather StatementEWXBexar45 min
May 10, 11:17 PM CDTSpecial Weather StatementEWXBexar43 min
May 11, 3:51 PM CDTAreal Flood AdvisoryEWXKendall2 hr
May 11, 4:03 PM CDTSpecial Weather StatementEWXAtascosa42 min
May 11, 4:23 PM CDTSpecial Weather StatementEWXCaldwell52 min
May 11, 4:24 PM CDTSpecial Weather StatementEWXGuadalupe51 min
May 11, 4:45 PM CDTSpecial Weather StatementEWXAtascosa45 min
May 11, 4:59 PM CDTSevere Thunderstorm WarningEWXAtascosa, Bexar, Wilson61 min
May 11, 5:20 PM CDTSevere Thunderstorm WarningEWXAtascosa, Bexar25 min
May 11, 5:30 PM CDTAreal Flood AdvisoryEWXAtascosa, Bexar, Frio, Medina3 hr
May 11, 5:46 PM CDTSevere Thunderstorm WarningEWXBexar, Medina44 min
May 11, 5:47 PM CDTSpecial Weather StatementEWXGuadalupe43 min
May 11, 6:13 PM CDTSpecial Weather StatementEWXWilson47 min
May 11, 6:31 PM CDTSpecial Weather StatementEWXDimmit44 min
May 11, 6:36 PM CDTSpecial Weather StatementEWXFrio, Medina39 min
May 11, 6:46 PM CDTSevere Thunderstorm WarningEWXDeWitt, Gonzales, Karnes, Wilson38 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.