Alert archive / Texas / Severe Thunderstorm Watches in 2021

Severe Thunderstorm Watch 315

June 25, 20214 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2021, 1:30 PM MDT for 4 states. It was in force for 10 hr.

The area

The outline as issued.

The facts

Issued
Jun 25, 2021, 1:30 PM MDT (19:30 UTC)
Expired
Jun 25, 2021, 11:00 PM MDT
In force
10 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
65 kt
All 74 counties

Baca County, CO, Bent County, CO, Kiowa County, CO, Prowers County, CO, Barber County, KS, Barton County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Meade County, KS, Morton County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Rush County, KS, Scott County, KS, Seward County, KS, Stafford County, KS, Stanton County, KS, Stevens County, KS, Beaver County, OK, Cimarron County, OK, Ellis County, OK, Harper County, OK, Roger Mills County, OK, Texas County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Lamb County, TX, Lipscomb County, TX, Lubbock County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Wheeler County, TX

The radar

The Dodge City radar (KDDC), 155 km from the middle of the area, began a volume at 19:31 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
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 25, 1:50 PM MDTSevere Thunderstorm WarningAMAHemphill, Lipscomb, Roberts55 min
Jun 25, 2:01 PM MDTSevere Thunderstorm WarningPUBBaca74 min
Jun 25, 2:01 PM MDTSevere Thunderstorm WarningAMAHartley, Oldham, Potter59 min
Jun 25, 2:24 PM MDTSevere Thunderstorm WarningAMACimarron66 min
Jun 25, 2:24 PM MDTSevere Thunderstorm WarningAMAHemphill, Lipscomb51 min
Jun 25, 2:27 PM MDTSevere Thunderstorm WarningAMAHartley, Moore, Oldham, Potter63 min
Jun 25, 2:51 PM MDTSevere Thunderstorm WarningAMAArmstrong, Donley, Gray54 min
Jun 25, 2:52 PM MDTSevere Thunderstorm WarningOUNEllis53 min
Jun 25, 2:56 PM MDTSevere Thunderstorm WarningAMAHartley, Moore, Oldham, Potter79 min
Jun 25, 2:59 PM MDTSevere Thunderstorm WarningPUBBaca61 min
Jun 25, 3:02 PM MDTSevere Thunderstorm WarningAMADallam, Hartley, Hutchinson, Moore, Sherman41 min
Jun 25, 3:13 PM MDTSevere Thunderstorm WarningDDCMorton47 min
Jun 25, 3:26 PM MDTSevere Thunderstorm WarningOUNEllis, Harper, Woodward49 min
Jun 25, 3:26 PM MDTSevere Thunderstorm WarningAMAGray, Hemphill, Lipscomb, Roberts, Wheeler64 min
Jun 25, 3:39 PM MDTSevere Thunderstorm WarningAMAArmstrong, Carson, Hutchinson, Moore, Potter66 min
Jun 25, 3:44 PM MDTSevere Thunderstorm WarningAMACollingsworth, Donley, Gray, Wheeler47 min
Jun 25, 3:47 PM MDTSevere Thunderstorm WarningAMACimarron, Texas58 min
Jun 25, 3:57 PM MDTSevere Thunderstorm WarningDDCMorton, Stevens48 min
Jun 25, 4:02 PM MDTSevere Thunderstorm WarningDDCMorton43 min
Jun 25, 4:03 PM MDTSevere Thunderstorm WarningOUNEllis, Roger Mills42 min
Jun 25, 4:06 PM MDTSevere Thunderstorm WarningOUNHarper, Woods, Woodward36 min
Jun 25, 4:20 PM MDTSevere Thunderstorm WarningDDCBarber, Comanche55 min
Jun 25, 4:32 PM MDTSevere Thunderstorm WarningLUBCastro, Swisher28 min
Jun 25, 4:33 PM MDTSevere Thunderstorm WarningAMACarson, Gray, Hutchinson, Roberts57 min
Jun 25, 4:36 PM MDTSevere Thunderstorm WarningAMACimarron, Texas69 min
Jun 25, 4:40 PM MDTSevere Thunderstorm WarningDDCStevens65 min
Jun 25, 4:43 PM MDTSevere Thunderstorm WarningDDCMorton62 min
Jun 25, 4:44 PM MDTSevere Thunderstorm WarningOUNEllis, Roger Mills27 min
Jun 25, 4:48 PM MDTSevere Thunderstorm WarningDDCBarber, Comanche, Ford, Kiowa, Pratt42 min
Jun 25, 5:11 PM MDTSevere Thunderstorm WarningDDCSeward, Stevens64 min
Jun 25, 5:14 PM MDTSevere Thunderstorm WarningLUBCrosby, Lubbock, Lynn22 min
Jun 25, 5:16 PM MDTSevere Thunderstorm WarningAMABeaver89 min
Jun 25, 5:17 PM MDTSevere Thunderstorm WarningDDCBarber, Pratt58 min
Jun 25, 5:21 PM MDTSevere Thunderstorm WarningAMABeaver, Texas69 min
Jun 25, 5:23 PM MDTSevere Thunderstorm WarningLUBSwisher39 min
Jun 25, 5:27 PM MDTSevere Thunderstorm WarningDDCEdwards, Kiowa, Pratt, Stafford63 min
Jun 25, 5:40 PM MDTSevere Thunderstorm WarningDDCMeade, Seward65 min
Jun 25, 5:41 PM MDTSevere Thunderstorm WarningLUBCrosby, Garza49 min
Jun 25, 5:52 PM MDTSevere Thunderstorm WarningAMACollingsworth, Donley, Gray, Wheeler53 min
Jun 25, 6:11 PM MDTSevere Thunderstorm WarningDDCStafford49 min
Jun 25, 6:22 PM MDTSevere Thunderstorm WarningDDCClark, Ford38 min
Jun 25, 6:39 PM MDTSevere Thunderstorm WarningAMACollingsworth, Wheeler45 min
Jun 25, 6:45 PM MDTSevere Thunderstorm WarningDDCFord, Gray33 min
Jun 25, 6:59 PM MDTSevere Thunderstorm WarningDDCEdwards, Gray, Hodgeman, Pawnee34 min
Jun 25, 6:59 PM MDTSevere Thunderstorm WarningOUNBeckham, Roger Mills46 min
Jun 25, 7:26 PM MDTSevere Thunderstorm WarningLUBBriscoe, Swisher34 min
Jun 25, 7:28 PM MDTSevere Thunderstorm WarningOUNBeckham, Custer, Dewey, Ellis, Roger Mills, Washita47 min
Jun 25, 7:40 PM MDTSevere Thunderstorm WarningAMACollingsworth, Donley95 min
Jun 25, 8:00 PM MDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Swisher19 min
Jun 25, 8:07 PM MDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey, Major, Woodward38 min
Jun 25, 8:16 PM MDTSevere Thunderstorm WarningAMAArmstrong, Donley59 min
Jun 25, 8:16 PM MDTSevere Thunderstorm WarningLUBBriscoe18 min
Jun 25, 10:37 PM MDTSevere Thunderstorm WarningAMAGray, Hemphill, Wheeler53 min
Jun 25, 10:45 PM MDTSevere Thunderstorm WarningAMAArmstrong, Carson, Collingsworth, Donley, Gray, Wheeler60 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

Dodge City, (KDDC), launched 12:00Z, 7.5 hours before the alert went out and 159 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, Dodge City, at 12:00Z on 2021-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 170 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, Dodge City, at 12:00Z on 2021-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 165 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
170 J/kg
Mixed-layer CIN
-177 J/kg
Mixed-layer LCL
1644 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
165 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted.

586 
WWUS20 KWNS 251929
SEL5  
SPC WW 251929
COZ000-KSZ000-OKZ000-TXZ000-260300-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 315
NWS Storm Prediction Center Norman OK
230 PM CDT Fri Jun 25 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southeast Colorado
  Southwest Kansas
  Northwest Oklahoma
  Northwest Texas

* Effective this Friday afternoon and evening from 230 PM until
  1000 PM CDT.

* Primary threats include...
  Scattered large hail likely with isolated very large hail events
    to 2.5 inches in diameter possible
  Scattered damaging winds and isolated significant gusts to 75
    mph possible
  A tornado or two possible

SUMMARY...Multiple corridors of severe thunderstorm development are
expected through late afternoon/early evening. Moderate to strong
instability and strengthening deep-layer winds will support some
supercells and sustained multicells, with storms eventually merging
into clusters by early evening. Damaging winds and large hail are
the primary risks.

The severe thunderstorm watch area is approximately along and 105
statute miles east and west of a line from 40 miles north of Garden
City KS to 15 miles southeast of Lubbock TX. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU5).

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 314...

AVIATION...A few severe thunderstorms with hail surface and aloft to
2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
25020.

...Guyer

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 25, 12:21 PM MDTMesoscale DiscussionSPCPhillips, Yuma114 min
Jun 25, 1:11 PM MDTMesoscale DiscussionSPCBaca, Bent, Cheyenne, Kiowa, Kit Carson, Otero and 1 more2 hr
Jun 25, 2:07 PM MDTSevere Thunderstorm WatchSPCCheyenne, Kit Carson, Lincoln, Washington, Yuma6 hr
Jun 25, 4:54 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Lincoln, Washington, Yuma66 min
Jun 24, 6:29 PM MDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Marshall, Nemaha and 2 more61 min
Jun 24, 7:13 PM MDTMesoscale DiscussionSPCBarton, Edwards, Ellis, Ellsworth, Finney, Ford and 29 more2 hr
Jun 24, 7:33 PM MDTMesoscale DiscussionSPCAtchison, Doniphan, Douglas, Franklin, Jefferson, Johnson and 3 more87 min
Jun 24, 7:57 PM MDTSevere Thunderstorm WatchSPCAtchison, Douglas, Franklin, Geary, Jackson, Jefferson and 9 more6 hr
Jun 24, 9:30 PM MDTMesoscale DiscussionSPCClark, Edwards, Ellis, Finney, Ford, Gove and 14 more60 min
Jun 25, 12:40 AM MDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Coffey, Dickinson and 16 more3 hr
Jun 25, 10:56 AM MDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 17 more3 hr
Jun 25, 12:43 PM MDTSevere Thunderstorm WatchSPCAllen, Anderson, Bourbon, Butler, Chase, Coffey and 32 more9 hr
Jun 25, 2:13 PM MDTMesoscale DiscussionSPCAnderson, Chase, Coffey, Douglas, Franklin, Johnson and 6 more2 hr
Jun 25, 5:21 PM MDTMesoscale DiscussionSPCAllen, Bourbon, Butler, Greenwood, Harvey, Linn and 4 more84 min
Jun 25, 4:09 PM MDTMesoscale DiscussionSPCAlfalfa, Beckham, Dewey, Ellis, Major, Roger Mills and 2 more96 min
Jun 25, 4:24 PM MDTSevere Thunderstorm WatchSPCAlfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 18 more7 hr

Nearby

Severe Thunderstorm Watches in Texas, 2021Severe Thunderstorm Watches in Kansas, 2021Severe Thunderstorm Watches in Oklahoma, 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.