Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 489, NWS Norman, OK

July 8, 2022Ellis County, Roger Mills County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 8, 2022, 6:17 PM CDT for Ellis County, Roger Mills County, Oklahoma. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 8, 2022, 6:17 PM CDT (23:17 UTC)
Expired: Jul 8, 2022, 7:00 PM CDT
In force: 43 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Ellis County, OK, Roger Mills County, OK

The radar

The Vance AFB radar (KVNX), 168 km from the middle of the area, began a volume at 23:17 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.3 hours before the alert went out and 196 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: 166 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 1770 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 8, 6:09 PM CDT, 8 minutes earlier.

Area forecast discussion, Jul 8, 6:09 PM CDT, 8 minutes before

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Hazardous weather outlook, Jul 8, 12:19 PM CDT, 5 hours 58 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
1219 PM CDT Fri Jul 8 2022

OKZ004>048-050>052-TXZ083>090-091730-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1219 PM CDT Fri Jul 8 2022

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...This Afternoon and Tonight...

.Thunderstorms...
Widely scattered thunderstorms will be possible across much of
central and southern Oklahoma this afternoon through late this
evening. A few strong to severe thunderstorms are expected. The
strongest storms could produce wind gusts up to 60 mph and hail up
to the size of nickels.

.Heat...
Triple digit temperatures and heat index values are expected this
afternoon.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday...

.Thunderstorms...
Thunderstorms are possible across far southwestern Oklahoma and
north Texas Saturday afternoon. Low thunderstorm chances return
to northern Oklahoma Monday night, and will continue to spread
southward Tuesday through early Wednesday.

.Heat...
Triple digit temperatures and heat index values will continue
Saturday afternoon across portions of southern Oklahoma and north
Texas.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Local storm report, Jul 8, 5:57 PM CDT, 20 minutes before

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Special weather statement, Jul 8, 6:00 PM CDT, 17 minutes before

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Special weather statement, Jul 8, 6:02 PM CDT, 15 minutes before

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Local storm report, Jul 8, 6:03 PM CDT, 14 minutes before

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Local storm report, Jul 8, 6:04 PM CDT, 13 minutes before

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Special weather statement, Jul 8, 6:11 PM CDT, 6 minutes before

Special Weather Statement
National Weather Service Norman OK
611 PM CDT Fri Jul 8 2022

OKZ023-035-037-038-082345-
Kiowa OK-Tillman OK-Caddo OK-Comanche OK-
611 PM CDT Fri Jul 8 2022

...Strong thunderstorms will impact portions of Comanche,
southwestern Caddo, northeastern Kiowa and east central Tillman
Counties through 645 PM CDT...

At 611 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 4 miles south of Mountain View to near Fort
Sill to near Chattanooga. Movement was east northeast at 10 mph.

HAZARD...Wind gusts of 50 to 55 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Lawton, Cache, Carnegie, Geronimo, Mountain View, Chattanooga,
Medicine Park, Indiahoma, Gotebo, Faxon, Meers, Lake Lawtonka, Boone,
Fort Sill, southwestern Lake Ellsworth, Wichita Mountains Wildlife
Refuge, Mount Scott, Doris Campground and The Visitor Center.

This includes Interstate 44 between mile markers 28 and 52.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 3510 9895 3511 9862 3510 9862 3511 9855
      3454 9817 3438 9876 3469 9875
TIME...MOT...LOC 2311Z 246DEG 8KT 3504 9877 3464 9854 3445 9865

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...55 MPH

11

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 7:07 PM CDT	Severe Thunderstorm Warning	OUN	Major	53 min
Jul 7, 7:08 PM CDT	Special Weather Statement	OUN	Beckham	37 min
Jul 7, 7:49 PM CDT	Special Weather Statement	OUN	Greer	26 min
Jul 8, 3:10 PM CDT	Special Weather Statement	OUN	Canadian	35 min
Jul 8, 3:19 PM CDT	Special Weather Statement	OUN	Washita	26 min
Jul 8, 3:34 PM CDT	Special Weather Statement	OUN	Greer	26 min
Jul 8, 3:37 PM CDT	Special Weather Statement	OUN	Washita	23 min
Jul 8, 3:38 PM CDT	Special Weather Statement	OUN	Canadian	37 min
Jul 8, 3:46 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer	44 min
Jul 8, 3:48 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Kingfisher	42 min
Jul 8, 3:50 PM CDT	Special Weather Statement	OUN	Harmon	25 min
Jul 8, 4:02 PM CDT	Special Weather Statement	OUN	Washita	28 min
Jul 8, 4:09 PM CDT	Special Weather Statement	OUN	Canadian	36 min
Jul 8, 4:15 PM CDT	Special Weather Statement	OUN	Harmon	30 min
Jul 8, 4:22 PM CDT	Special Weather Statement	OUN	Greer	23 min
Jul 8, 4:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Caddo, Canadian, Grady	50 min
Jul 8, 4:29 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Washita	46 min
Jul 8, 4:31 PM CDT	Special Weather Statement	OUN	Canadian	29 min
Jul 8, 4:37 PM CDT	Special Weather Statement	OUN	Greer, Harmon, Kiowa, Washita	23 min
Jul 8, 4:45 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Kiowa, Washita	45 min
Jul 8, 4:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Canadian, Cleveland, Grady, Oklahoma	39 min
Jul 8, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	50 min
Jul 8, 5:28 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, Oklahoma	47 min
Jul 8, 5:30 PM CDT	Special Weather Statement	OUN	Kiowa	30 min
Jul 8, 5:43 PM CDT	Areal Flood Advisory	OUN	Oklahoma	2 hr
Jul 8, 5:49 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	41 min
Jul 8, 5:50 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	40 min
Jul 8, 5:52 PM CDT	Special Weather Statement	OUN	Dewey	23 min
Jul 8, 6:00 PM CDT	Special Weather Statement	OUN	Pontotoc	30 min
Jul 8, 6:02 PM CDT	Special Weather Statement	OUN	Roger Mills	28 min
Jul 8, 6:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Dewey	53 min
Jul 8, 6:11 PM CDT	Special Weather Statement	OUN	Comanche	34 min
Jul 8, 6:27 PM CDT	Special Weather Statement	OUN	Pontotoc	33 min
Jul 8, 6:40 PM CDT	Special Weather Statement	OUN	Cotton	20 min
Jul 8, 6:42 PM CDT	Special Weather Statement	OUN	Comanche	33 min
Jul 8, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills	48 min
Jul 8, 6:29 PM CDT	Special Weather Statement	OUN	Foard, Hardeman	31 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2022 Every severe thunderstorm warning in 2022

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.