Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 113, NWS Austin/San Antonio, TX

May 10, 2021Dimmit County, Maverick County, Zavala County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 10, 2021, 6:59 PM CDT for Dimmit County, Maverick County, Zavala County, Texas. It was in force for 61 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, 6:59 PM CDT (23:59 UTC)
Expired: May 10, 2021, 8:00 PM CDT
In force: 61 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dimmit County, TX, Maverick County, TX, Zavala County, TX

The radar

The Laughlin AFB radar (KDFX), 90 km from the middle of the area, began a volume at 00:05 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

Time	Report	Where	Remark
May 10, 7:15 PM CDT	TSTM WND DMG	El Indio, TX	REPORT RELAYED FROM BROADCAST MEDIA TWITTER OF WIND DAMAGE TO AT LEAST TWO ROOFS AND DOWN POWERLINES IN EL INDIO. TIME ESTIMATED VIA RADAR.

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
May 10, 1:48 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 12.0 hours before the alert went out and 116 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2989 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 205 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

169 
WUUS54 KEWX 102359
SVREWX
TXC127-323-507-110100-
/O.NEW.KEWX.SV.W.0113.210510T2359Z-210511T0100Z/

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

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  Maverick County in south central Texas...
  Dimmit County in south central Texas...
  Southwestern Zavala County in south central Texas...

* Until 800 PM CDT.

* At 659 PM CDT, severe thunderstorms were located along a line
  extending from 10 miles southwest of El Indio to 8 miles east of
  Chupadera Ranch Airport, moving northeast at 35 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...
  Eagle Pass, Crystal City, Carrizo Springs, Big Wells, El Indio,
  Asherton, Chula Vista, Chula Vista-River Spur, Darling, Las
  Colonias, Brundage, Chaparral Wildlife Management Area, Light,
  Carrizo Hill, Gilson Groves, Las Vegas, Rosita, Paloma, Winter
  Haven and Cometa.

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 2823 10022 2828 10029 2831 10028 2840 10035
      2845 10034 2848 10037 2850 10033 2852 10039
      2855 10041 2858 10040 2868 10051 2874 10051
      2907 10040 2851 9940 2821 9940 2820 10021
TIME...MOT...LOC 2359Z 215DEG 31KT 2841 10044 2816 9994 

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

BRADY

2 follow-up statements

197 
WWUS54 KEWX 110016
SVSEWX

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

TXC127-323-507-110100-
/O.CON.KEWX.SV.W.0113.000000T0000Z-210511T0100Z/
Maverick TX-Dimmit TX-Zavala TX-
716 PM CDT Mon May 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR MAVERICK...DIMMIT AND SOUTHWESTERN ZAVALA COUNTIES...

At 716 PM CDT, severe thunderstorms were located along a line
extending from near El Indio to 7 miles west of Gilson Groves, moving
northeast at 35 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...
Eagle Pass, Crystal City, Carrizo Springs, Big Wells, El Indio,
Asherton, Chula Vista, Chula Vista-River Spur, Darling, Las Colonias,
Brundage, Carrizo Hill, Gilson Groves, Las Vegas, Rosita, Paloma,
Winter Haven, Cometa, Catarina and Farias Lake.

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 2843 9940 2821 9962 2820 10021 2823 10022
      2828 10029 2831 10028 2840 10035 2845 10034
      2848 10037 2850 10033 2852 10039 2855 10041
      2858 10040 2868 10051 2874 10051 2907 10040
      2851 9940
TIME...MOT...LOC 0016Z 215DEG 30KT 2855 10032 2825 9987 

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

BRADY

064 
WWUS54 KEWX 110038
SVSEWX

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

TXC127-323-507-110100-
/O.CON.KEWX.SV.W.0113.000000T0000Z-210511T0100Z/
Maverick TX-Dimmit TX-Zavala TX-
738 PM CDT Mon May 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT
FOR MAVERICK...DIMMIT AND SOUTHWESTERN ZAVALA COUNTIES...

At 737 PM CDT, severe thunderstorms were located along a line
extending from 11 miles west of Cometa to near Asherton, moving
northeast at 35 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...
Eagle Pass, Crystal City, Carrizo Springs, Big Wells, El Indio,
Asherton, Chula Vista, Chula Vista-River Spur, Darling, Las Colonias,
Brundage, Carrizo Hill, Gilson Groves, Las Vegas, Rosita, Paloma,
Winter Haven, Cometa, Catarina and Farias Lake.

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 2843 9940 2821 9962 2820 10021 2823 10022
      2828 10029 2831 10028 2840 10035 2845 10034
      2848 10037 2850 10033 2852 10039 2855 10041
      2858 10040 2868 10051 2874 10051 2907 10040
      2851 9940
TIME...MOT...LOC 0037Z 215DEG 31KT 2870 10020 2840 9975 

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

BRADY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:08 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Llano	67 min
May 9, 7:47 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Gillespie, Kendall	58 min
May 9, 9:53 PM CDT	Special Weather Statement	EWX	Gillespie	52 min
May 10, 3:19 PM CDT	Special Weather Statement	EWX	Real	41 min
May 10, 3:44 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Real	46 min
May 10, 4:21 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Kerr, Real	37 min
May 10, 5:56 PM CDT	Special Weather Statement	EWX	Edwards	49 min
May 10, 6:00 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	60 min
May 10, 6:17 PM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	58 min
May 10, 6:49 PM CDT	Special Weather Statement	EWX	Dimmit, Maverick	41 min

Nearby

Severe Thunderstorm Warnings in Texas, 2021 Every 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.