Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 348, NWS Norman, OK

June 25, 20216 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 25, 2021, 8:28 PM CDT for 6 counties in Oklahoma. It was in force for 47 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: Jun 25, 2021, 8:28 PM CDT (01:28 UTC)
Expired: Jun 25, 2021, 9:15 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Roger Mills County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 155 km from the middle of the area, began a volume at 01:30 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
Jun 25, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	10 hr
Jun 25, 5:24 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 1.5 hours before the alert went out and 207 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: 957 J/kg
Mixed-layer CIN: -173 J/kg
Mixed-layer LCL: 1729 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 295 m²/s²
0-3 km storm-relative helicity: 439 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

The text

As transmitted.

067 
WUUS54 KOUN 260128
SVROUN
OKC009-039-043-045-129-149-260215-
/O.NEW.KOUN.SV.W.0348.210626T0128Z-210626T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
828 PM CDT Fri Jun 25 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Northwestern Washita County in western Oklahoma...
  Southeastern Ellis County in northwestern Oklahoma...
  Roger Mills County in western Oklahoma...
  Western Custer County in western Oklahoma...
  Southwestern Dewey County in northwestern Oklahoma...
  Northern Beckham County in western Oklahoma...

* Until 915 PM CDT.

* At 828 PM CDT, severe thunderstorms were located along a line
  extending from 5 miles south of Roll to 4 miles south of Cheyenne
  to 6 miles northwest of Sayre, moving east at 40 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Elk City, Cheyenne, Hammon, Canute, Leedey, Butler, Camargo, Strong
  City, Foss Reservoir, Angora, Moorewood, Roll and Berlin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3610 9924 3570 9910 3539 9922 3527 9988
      3551 9980 3577 9989
TIME...MOT...LOC 0128Z 249DEG 36KT 3571 9970 3555 9966 3535 9973 

HAIL...1.00IN
WIND...70MPH
 
$$

Mahale

2 follow-up statements

907 
WWUS54 KOUN 260145
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
845 PM CDT Fri Jun 25 2021

OKC009-039-043-045-129-149-260215-
/O.CON.KOUN.SV.W.0348.000000T0000Z-210626T0215Z/
Washita OK-Ellis OK-Roger Mills OK-Custer OK-Dewey OK-Beckham OK-
845 PM CDT Fri Jun 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR NORTHWESTERN WASHITA...SOUTHEASTERN ELLIS...EASTERN ROGER
MILLS...WESTERN CUSTER...SOUTHWESTERN DEWEY AND NORTHEASTERN BECKHAM
COUNTIES...

At 845 PM CDT, severe thunderstorms were located along a line
extending from 7 miles northeast of Roll to 4 miles west of Moorewood
to near Hammon to 6 miles west of Elk City, moving east at 45 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

Locations impacted include...
Elk City, Cheyenne, Hammon, Canute, Leedey, Butler, Camargo, Strong
City, Foss Reservoir, Angora, Moorewood, Roll and Berlin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3610 9924 3570 9910 3539 9922 3531 9966
      3539 9965 3582 9979
TIME...MOT...LOC 0145Z 263DEG 40KT 3583 9959 3573 9943 3561 9939 3538
9953

HAIL...1.00IN
WIND...70MPH
 
$$

Mahale

949 
WWUS54 KOUN 260200
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
900 PM CDT Fri Jun 25 2021

OKC009-039-043-045-129-149-260215-
/O.CON.KOUN.SV.W.0348.000000T0000Z-210626T0215Z/
Washita OK-Ellis OK-Roger Mills OK-Custer OK-Dewey OK-Beckham OK-
900 PM CDT Fri Jun 25 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR NORTHWESTERN WASHITA...SOUTHEASTERN ELLIS...EASTERN ROGER
MILLS...WESTERN CUSTER...SOUTHWESTERN DEWEY AND NORTHEASTERN BECKHAM
COUNTIES...

At 859 PM CDT, severe thunderstorms were located along a line
extending from near Angora to 4 miles northeast of Moorewood to near
Butler to near Elk City, moving east at 40 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations impacted include...
Elk City, Hammon, Canute, Leedey, Butler, Camargo, Moorewood, Foss
Reservoir and Angora.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3610 9924 3570 9910 3539 9922 3534 9950
      3564 9949 3570 9962 3589 9965
TIME...MOT...LOC 0159Z 269DEG 37KT 3588 9945 3578 9929 3566 9922 3543
9939

HAIL...0.75IN
WIND...70MPH
 
$$

Mahale

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 25, 7:18 PM CDT	Special Weather Statement	OUN	Ellis, Woodward	42 min
Jun 25, 7:59 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	46 min
Jun 25, 8:08 PM CDT	Special Weather Statement	OUN	Dewey, Woodward	52 min
Jun 25, 8:52 PM CDT	Special Weather Statement	OUN	Alfalfa, Blaine, Dewey, Major, Woodward	38 min
Jun 25, 9:07 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Major, Woodward	38 min
Jun 25, 9:43 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer, Dewey, Kingfisher, Major	33 min
Jun 25, 10:06 PM CDT	Special Weather Statement	OUN	Grant	39 min
Jun 25, 10:41 PM CDT	Special Weather Statement	OUN	Blaine, Garfield, Kingfisher, Logan, Noble	49 min
Jun 25, 10:42 PM CDT	Special Weather Statement	OUN	Woodward	48 min
Jun 25, 11:21 PM CDT	Special Weather Statement	OUN	Woodward	24 min
Jun 25, 11:25 PM CDT	Special Weather Statement	OUN	Ellis, Harper, Woodward	50 min
Jun 25, 11:44 PM CDT	Areal Flood Advisory	OUN	Dewey, Ellis, Woodward	6 hr
Jun 25, 11:46 PM CDT	Special Weather Statement	OUN	Roger Mills	44 min
Jun 26, 12:13 AM CDT	Flash Flood Warning	OUN	Dewey, Ellis, Woodward	4 hr
Jun 26, 12:26 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Dewey	49 min
Jun 26, 12:47 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon, Roger Mills	43 min
Jun 26, 1:06 AM CDT	Areal Flood Advisory	OUN	Blaine, Dewey, Major, Woodward	4 hr
Jun 26, 1:12 AM CDT	Special Weather Statement	OUN	Blaine, Custer, Dewey, Washita	48 min
Jun 26, 1:19 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Kiowa, Washita	41 min
Jun 26, 1:49 AM CDT	Areal Flood Advisory	OUN	Dewey, Ellis	3 hr
Jun 26, 1:55 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Custer, Kiowa, Washita	50 min
Jun 26, 2:40 AM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Grady, Kingfisher	50 min
Jun 26, 3:14 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	46 min
Jun 26, 3:39 AM CDT	Areal Flood Advisory	OUN	Blaine, Garfield, Kingfisher, Logan, Major, Noble and 1 more	3 hr
Jun 26, 3:52 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Logan, Oklahoma, Pottawatomie	38 min
Jun 26, 4:29 AM CDT	Special Weather Statement	OUN	Cleveland, Lincoln, Pottawatomie	46 min
Jun 26, 4:44 AM CDT	Areal Flood Advisory	OUN	Canadian, Cleveland, McClain, Oklahoma	6 hr
Jun 26, 7:32 AM CDT	Flash Flood Warning	OUN	Caddo, Comanche, Grady	4 hr
Jun 26, 2:04 PM CDT	River Flood Warning	OUN	Cleveland, McClain	46 hr
Jun 26, 2:05 PM CDT	River Flood Warning	OUN	Lincoln, Oklahoma, Pottawatomie	39 hr
Jun 26, 2:05 PM CDT	River Flood Advisory	OUN	Cleveland, McClain, Pottawatomie	31 hr
Jun 26, 2:06 PM CDT	River Flood Warning	OUN	Pottawatomie, Seminole	19 hr
Jun 26, 2:13 PM CDT	River Flood Watch	OUN	Garvin	13 hr
Jun 26, 3:36 PM CDT	Special Weather Statement	OUN	Comanche	24 min
Jun 26, 3:53 PM CDT	Special Weather Statement	OUN	Jackson	37 min
Jun 26, 4:00 PM CDT	Special Weather Statement	OUN	Comanche	30 min
Jun 26, 4:17 PM CDT	Special Weather Statement	OUN	Jackson	28 min
Jun 26, 4:27 PM CDT	Special Weather Statement	OUN	Comanche	48 min
Jun 26, 4:32 PM CDT	Areal Flood Advisory	OUN	Comanche	3 hr
Jun 26, 4:48 PM CDT	Special Weather Statement	OUN	Tillman	42 min
Jun 26, 4:48 PM CDT	Special Weather Statement	OUN	Jackson	42 min
Jun 26, 4:55 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	50 min
Jun 26, 4:55 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Grady	39 min
Jun 26, 5:13 PM CDT	Special Weather Statement	OUN	Kiowa	32 min
Jun 26, 5:20 PM CDT	Special Weather Statement	OUN	Ellis	25 min
Jun 26, 5:37 PM CDT	Special Weather Statement	OUN	Tillman	38 min
Jun 26, 5:48 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Tillman	42 min
Jun 26, 5:55 PM CDT	Special Weather Statement	OUN	Custer	35 min
Jun 26, 6:13 PM CDT	Areal Flood Advisory	OUN	Caddo	3 hr
Jun 26, 6:19 PM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Custer	3 hr
Jun 26, 6:20 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	40 min
Jun 26, 6:31 PM CDT	Special Weather Statement	OUN	Tillman	29 min
Jun 26, 6:43 PM CDT	Areal Flood Advisory	OUN	Comanche, Cotton, Tillman	3 hr
Jun 26, 6:45 PM CDT	Severe Thunderstorm Warning	OUN	Blaine	45 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.