Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 65, NWS Norman, OK

March 23, 2023Hughes County, Seminole County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Mar 23, 2023, 3:21 PM CDT for Hughes County, Seminole County, Oklahoma. It was in force for 20 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: Mar 23, 2023, 3:21 PM CDT (20:21 UTC)
Expired: Mar 23, 2023, 3:41 PM CDT
In force: 20 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 50.0 mph

Counties Hughes County, OK, Seminole County, OK

The radar

The Norman radar (KTLX), 81 km from the middle of the area, began a volume at 20:21 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
Mar 23, 3:10 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 8.4 hours before the alert went out and 89 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: 550 J/kg
Mixed-layer CIN: -266 J/kg
Mixed-layer LCL: 743 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 277 m²/s²
0-3 km storm-relative helicity: 351 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Mar 23, 1:04 PM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Mar 23, 1:04 PM CDT, 2 hours 17 minutes before

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Hazardous weather outlook, Mar 23, 3:07 PM CDT, 14 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
307 PM CDT Thu Mar 23 2023

OKZ004>048-050>052-TXZ083>090-242015-
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-
307 PM CDT Thu Mar 23 2023

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...
Scattered thunderstorms are expected through early Friday morning
from western-north Texas through south-central and southeast
Oklahoma. Large hail, up to golf ball size, will be the primary
hazard. However, a tornado and/or damaging winds are also possible
with storms this evening across western-north Texas.

.Heavy Rainfall...
Areas of heavy rainfall and isolated flash flooding are expected
across east-central into southeastern Oklahoma through early
Friday morning.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across
central and southern Oklahoma, as well as western-north Texas,
should prepare for severe weather operations this afternoon
through Friday morning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday...

.Fire Weather...
Areas of near-critical fire weather conditions are expected across
far western Oklahoma and western-north Texas on Friday and
Saturday afternoon.

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

In the hours before

Special weather statement, Mar 23, 2:02 PM CDT, 1 hour 19 minutes before

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Special weather statement, Mar 23, 2:21 PM CDT, 1 hour before

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Special weather statement, Mar 23, 2:29 PM CDT, 52 minutes before

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Special weather statement, Mar 23, 2:37 PM CDT, 44 minutes before

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Special weather statement, Mar 23, 2:43 PM CDT, 38 minutes before

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Special weather statement, Mar 23, 3:13 PM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 23, 1:57 PM CDT	River Flood Advisory	OUN	Pottawatomie, Seminole	12 hr
Mar 23, 2:02 PM CDT	Special Weather Statement	OUN	Tillman	28 min
Mar 23, 2:21 PM CDT	Special Weather Statement	OUN	Garvin	24 min
Mar 23, 2:29 PM CDT	Special Weather Statement	OUN	Tillman	31 min
Mar 23, 2:37 PM CDT	Special Weather Statement	OUN	Cleveland	38 min
Mar 23, 2:43 PM CDT	Special Weather Statement	OUN	Pottawatomie	32 min
Mar 23, 3:13 PM CDT	Special Weather Statement	OUN	Seminole	32 min
Mar 23, 3:23 PM CDT	Special Weather Statement	OUN	Logan	37 min
Mar 23, 3:34 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	41 min
Mar 23, 3:45 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Noble, Payne	45 min
Mar 23, 3:56 PM CDT	Special Weather Statement	OUN	Cleveland	34 min
Mar 23, 4:00 PM CDT	Areal Flood Advisory	OUN	Cleveland	3 hr
Mar 23, 4:15 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	45 min
Mar 23, 4:30 PM CDT	Special Weather Statement	OUN	Cleveland, Pottawatomie	30 min
Mar 23, 4:31 PM CDT	Special Weather Statement	OUN	Lincoln	29 min
Mar 23, 4:48 PM CDT	Areal Flood Advisory	OUN	Cleveland, Pottawatomie	3 hr
Mar 23, 5:00 PM CDT	Special Weather Statement	OUN	Grady, Oklahoma	30 min
Mar 23, 5:06 PM CDT	Special Weather Statement	OUN	Lincoln	24 min
Mar 23, 5:25 PM CDT	Special Weather Statement	OUN	Cleveland, McClain	35 min
Mar 23, 5:32 PM CDT	Areal Flood Advisory	OUN	Comanche	3 hr
Mar 23, 5:36 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, Grady, McClain, Pottawatomie	39 min
Mar 23, 5:41 PM CDT	Special Weather Statement	OUN	Grady	34 min
Mar 23, 6:08 PM CDT	Special Weather Statement	OUN	Grady, McClain	37 min
Mar 23, 6:10 PM CDT	Areal Flood Advisory	OUN	Lincoln, Pottawatomie	3 hr
Mar 23, 6:10 PM CDT	Special Weather Statement	OUN	Pottawatomie	35 min
Mar 23, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	28 min
Mar 23, 3:24 PM CDT	Special Weather Statement	OUN	Wilbarger	36 min
Mar 23, 4:54 PM CDT	Special Weather Statement	OUN	Wilbarger	36 min
Mar 23, 5:27 PM CDT	Special Weather Statement	OUN	Knox	33 min
Mar 23, 5:37 PM CDT	Severe Thunderstorm Warning	OUN	Knox	38 min
Mar 23, 6:11 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Knox, Wilbarger	49 min
Mar 23, 6:17 PM CDT	Areal Flood Advisory	OUN	Baylor, Foard, Knox, Wilbarger	3 hr
Mar 23, 6:33 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Baylor, Wilbarger	27 min
Mar 23, 6:58 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023 Every severe thunderstorm warning in 2023

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.