Alert archive / Texas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 39, NWS Austin/San Antonio, TX

April 15, 2021Kinney County, Uvalde County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Apr 15, 2021, 9:42 AM CDT for Kinney County, Uvalde County, Texas. It was in force for 63 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: Apr 15, 2021, 9:42 AM CDT (14:42 UTC)
Expired: Apr 15, 2021, 10:45 AM CDT
In force: 63 min
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Kinney County, TX, Uvalde County, TX

The radar

The Laughlin AFB radar (KDFX), 12 km from the middle of the area, began a volume at 14:41 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.

Issued	Product	Office	Lasted
Apr 15, 8:36 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 2.7 hours before the alert went out and 62 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: 2593 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 338 m²/s²
Significant tornado parameter: 4.6
Supercell composite: 21.4

Open this sounding in Storm Lab

The text

As transmitted.

989 
WUUS54 KEWX 151442
SVREWX
TXC271-463-151545-
/O.NEW.KEWX.SV.W.0039.210415T1442Z-210415T1545Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Austin/San Antonio TX
942 AM CDT Thu Apr 15 2021

The National Weather Service in Austin San Antonio has issued a

* Severe Thunderstorm Warning for...
  East central Kinney County in south central Texas...
  West central Uvalde County in south central Texas...

* Until 1045 AM CDT.

* At 941 AM CDT, a severe thunderstorm was located 8 miles southeast
  of Alamo Village, or 9 miles east of Brackettville, moving east at
  15 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...
  Cline, Laguna and Turkey Mountain. 

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 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 2928 10035 2946 10034 2949 9997 2923 9997
TIME...MOT...LOC 1441Z 273DEG 15KT 2937 10026 

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

BF

2 follow-up statements

667 
WWUS54 KEWX 151503
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1003 AM CDT Thu Apr 15 2021

TXC271-463-151545-
/O.CON.KEWX.SV.W.0039.000000T0000Z-210415T1545Z/
Kinney TX-Uvalde TX-
1003 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT
FOR EAST CENTRAL KINNEY AND WEST CENTRAL UVALDE COUNTIES...

At 1002 AM CDT, a severe thunderstorm was located near Cline, or 15
miles east of Brackettville, moving east at 15 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...
Cline, Laguna, 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 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 2927 10027 2946 10027 2949 9997 2923 9997
TIME...MOT...LOC 1502Z 273DEG 15KT 2937 10016 

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

BF

869 
WWUS54 KEWX 151522
SVSEWX

Severe Weather Statement
National Weather Service Austin/San Antonio TX
1022 AM CDT Thu Apr 15 2021

TXC271-463-151545-
/O.CON.KEWX.SV.W.0039.000000T0000Z-210415T1545Z/
Kinney TX-Uvalde TX-
1022 AM CDT Thu Apr 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM CDT
FOR EAST CENTRAL KINNEY AND WEST CENTRAL UVALDE COUNTIES...

At 1022 AM CDT, a severe thunderstorm was located near Laguna, or 19
miles northwest of Uvalde, moving east at 15 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...
Cline, Laguna, 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 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 2926 10020 2946 10020 2949 9997 2923 9997
TIME...MOT...LOC 1522Z 273DEG 15KT 2937 10006 

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

BF

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 7:34 AM CDT	Special Weather Statement	EWX	Kinney	41 min
Apr 15, 8:12 AM CDT	Special Weather Statement	EWX	Edwards	48 min
Apr 15, 8:14 AM CDT	Special Weather Statement	EWX	Kinney	46 min
Apr 15, 8:31 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Val Verde	59 min
Apr 15, 8:40 AM CDT	Severe Thunderstorm Warning	EWX	Kinney	65 min
Apr 15, 8:55 AM CDT	Special Weather Statement	EWX	Edwards	50 min
Apr 15, 9:04 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	24 min
Apr 15, 9:32 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	17 min
Apr 15, 10:42 AM CDT	Severe Thunderstorm Warning	EWX	Uvalde	45 min
Apr 15, 12:15 PM CDT	Severe Thunderstorm Warning	EWX	Gillespie, Llano	60 min
Apr 15, 1:07 PM CDT	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Llano, Travis	53 min
Apr 15, 1:52 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Williamson	36 min
Apr 15, 2:07 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Williamson	40 min
Apr 15, 2:57 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Llano	63 min
Apr 15, 3:21 PM CDT	Severe Thunderstorm Warning	EWX	Burnet, Williamson	54 min
Apr 15, 3:56 PM CDT	Severe Thunderstorm Warning	EWX	Travis, Williamson	49 min
Apr 15, 4:11 PM CDT	Special Weather Statement	EWX	Williamson	49 min
Apr 15, 4:36 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Lee, Travis, Williamson	54 min
Apr 15, 5:22 PM CDT	Severe Thunderstorm Warning	EWX	Bastrop, Fayette, Lee	29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.