Alert archive / Texas / Severe Thunderstorm Watches in 2021

Severe Thunderstorm Watch 323

June 26, 2021Lea County, New Mexico; 16 counties in Oklahoma; 38 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2021, 2:48 PM MDT for Lea County, New Mexico; 16 counties in Oklahoma; 38 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Jun 26, 2021, 2:48 PM MDT (20:48 UTC)
Expired
Jun 27, 2021, 12:00 AM MDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 55 counties

Lea County, NM, Caddo County, OK, Carter County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Love County, OK, McClain County, OK, Murray County, OK, Stephens County, OK, Tillman County, OK, Andrews County, TX, Archer County, TX, Baylor County, TX, Borden County, TX, Childress County, TX, Clay County, TX, Cochran County, TX, Cottle County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Ector County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Gaines County, TX, Garza County, TX, Glasscock County, TX, Hardeman County, TX, Haskell County, TX, Hockley County, TX, Howard County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Motley County, TX, Scurry County, TX, Stonewall County, TX, Terry County, TX, Wichita County, TX, Wilbarger County, TX, Winkler County, TX, Yoakum County, TX

The radar

The Lubbock radar (KLBB), 61 km from the middle of the area, began a volume at 20:49 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
10%
One or more EF2 to EF5 tornadoes
2%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 26, 3:35 PM MDTSevere Thunderstorm WarningLUBYoakum55 min
Jun 26, 3:55 PM MDTSevere Thunderstorm WarningOUNJackson, Kiowa, Tillman50 min
Jun 26, 3:55 PM MDTSevere Thunderstorm WarningOUNComanche, Grady39 min
Jun 26, 4:24 PM MDTSevere Thunderstorm WarningLUBTerry, Yoakum66 min
Jun 26, 4:37 PM MDTSevere Thunderstorm WarningMAFCrane, Ector, Midland, Upton53 min
Jun 26, 4:39 PM MDTSevere Thunderstorm WarningLUBCochran, Yoakum66 min
Jun 26, 4:48 PM MDTSevere Thunderstorm WarningOUNComanche, Kiowa, Tillman42 min
Jun 26, 4:57 PM MDTSevere Thunderstorm WarningMAFAndrews, Ector, Martin, Midland63 min
Jun 26, 5:16 PM MDTSevere Thunderstorm WarningMAFDawson, Gaines59 min
Jun 26, 5:17 PM MDTSevere Thunderstorm WarningLUBTerry43 min
Jun 26, 5:25 PM MDTSevere Thunderstorm WarningLUBCochran, Hockley65 min
Jun 26, 6:15 PM MDTSevere Thunderstorm WarningMAFDawson, Gaines60 min
Jun 26, 6:24 PM MDTSevere Thunderstorm WarningLUBBailey, Cochran, Hockley, Lamb66 min
Jun 26, 6:27 PM MDTSevere Thunderstorm WarningLUBGarza, Kent63 min
Jun 26, 6:35 PM MDTSevere Thunderstorm WarningLUBBailey, Cochran55 min
Jun 26, 6:36 PM MDTTornado Warning Tornado observedMAFDawson24 min
Jun 26, 6:41 PM MDTSevere Thunderstorm WarningMAFGlasscock, Howard, Martin, Midland29 min
Jun 26, 7:02 PM MDTFlash Flood WarningMAFDawson3 hr
Jun 26, 7:19 PM MDTSevere Thunderstorm WarningLUBBailey, Cochran, Hockley, Lamb56 min
Jun 26, 7:23 PM MDTSevere Thunderstorm WarningLUBCrosby, Garza67 min
Jun 26, 7:36 PM MDTSevere Thunderstorm WarningMAFCrane, Ector, Ward, Winkler54 min
Jun 26, 7:40 PM MDTFlash Flood WarningOUNBeckham, Greer, Kiowa, Washita3 hr
Jun 26, 7:47 PM MDTSevere Thunderstorm WarningMAFCrane, Ector, Ward, Winkler3 min
Jun 26, 7:49 PM MDTSevere Thunderstorm WarningLUBCrosby, Floyd56 min
Jun 26, 7:59 PM MDTSevere Thunderstorm WarningLUBHockley, Lubbock, Lynn, Terry, Yoakum61 min
Jun 26, 8:03 PM MDTSevere Thunderstorm WarningLUBCastro, Hale, Hockley, Lamb, Lubbock, Swisher57 min
Jun 26, 8:06 PM MDTSevere Thunderstorm WarningLUBCottle, Motley54 min
Jun 26, 8:16 PM MDTSevere Thunderstorm WarningMAFScurry44 min
Jun 26, 8:26 PM MDTSevere Thunderstorm WarningLUBCottle64 min
Jun 26, 8:57 PM MDTSevere Thunderstorm WarningLUBBriscoe, Crosby, Floyd, Garza, Hale, Lubbock and 2 more63 min
Jun 26, 8:59 PM MDTFlash Flood WarningLUBCrosby, Floyd2 hr
Jun 26, 9:51 PM MDTFlash Flood WarningLUBChildress, Cottle2 hr
Jun 26, 9:57 PM MDTSevere Thunderstorm WarningLUBBriscoe, Crosby, Dickens, Floyd, Garza, Hall and 2 more48 min
Jun 26, 11:08 PM MDTSevere Thunderstorm WarningOUNFoard, Hardeman, Knox52 min
Jun 26, 11:18 PM MDTSevere Thunderstorm WarningOUNTillman42 min
Jun 26, 11:49 PM MDTSevere Thunderstorm WarningOUNJackson, Tillman41 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.8 hours before the alert went out and 197 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, Amarillo Airport, TX at 12:00Z on 2021-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 377 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2021-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 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
377 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
524 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.2

Open this sounding in Storm Lab

The text

As transmitted.

038 
WWUS20 KWNS 262046
SEL3  
SPC WW 262046
NMZ000-OKZ000-TXZ000-270400-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 323
NWS Storm Prediction Center Norman OK
350 PM CDT Sat Jun 26 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southeast New Mexico
  Southwest Oklahoma
  West and Western-North Texas

* Effective this Saturday afternoon and evening from 350 PM until
  1100 PM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph likely
  Scattered large hail and isolated very large hail events to 2
    inches in diameter possible

SUMMARY...Thunderstorms will continue to develop across the watch
area through the afternoon and early evening, with the strongest
cells posing a risk of locally damaging winds and large hail.

The severe thunderstorm watch area is approximately along and 50
statute miles north and south of a line from 30 miles west southwest
of Hobbs NM to 45 miles southeast of Chickasha OK. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU3).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 321...WW 322...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 550. Mean storm motion vector
25025.

...Hart

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 2:27 PM MDTMesoscale DiscussionSPCCurry, Lea, Quay, Roosevelt2 hr
Jun 26, 3:58 PM MDTSevere Thunderstorm WatchSPCChaves, Curry, De Baca, Quay, Roosevelt8 hr
Jun 26, 5:27 PM MDTMesoscale DiscussionSPCLea93 min
Jun 25, 7:49 PM MDTMesoscale DiscussionSPCBeckham, Blaine, Custer, Dewey, Greer, Harmon and 3 more86 min
Jun 25, 10:36 PM MDTMesoscale DiscussionSPCEllis, Roger Mills84 min
Jun 25, 10:42 PM MDTMesoscale DiscussionSPCCraig, Nowata, Osage, Ottawa, Washington63 min
Jun 25, 10:59 PM MDTSevere Thunderstorm WatchSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Custer and 11 more5 hr
Jun 26, 12:53 AM MDTMesoscale DiscussionSPCBlaine, Caddo, Canadian, Comanche, Custer, Grady and 7 more67 min
Jun 26, 11:59 AM MDTMesoscale DiscussionSPCCaddo, Canadian, Cleveland, Comanche, Cotton, Garvin and 12 more2 hr

Nearby

Severe Thunderstorm Watches in Texas, 2021Severe Thunderstorm Watches in Oklahoma, 2021Severe Thunderstorm Watches in New Mexico, 2021Every severe thunderstorm watch 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.