Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 211, NWS Norman, OK

May 12, 2023Grady County, McClain County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 12, 2023, 3:41 PM CDT for Grady County, McClain County, Oklahoma. It was in force for 49 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: May 12, 2023, 3:41 PM CDT (20:41 UTC)
Expired: May 12, 2023, 4:30 PM CDT
In force: 49 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Grady County, OK, McClain County, OK

The radar

The Norman radar (KTLX), 50 km from the middle of the area, began a volume at 20:40 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
May 12, 3:39 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

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 May 12, 12:56 PM CDT, 2 hours 45 minutes earlier.

Area forecast discussion, May 12, 12:56 PM CDT, 2 hours 45 minutes before

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Hazardous weather outlook, May 12, 1:09 PM CDT, 2 hours 32 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
109 PM CDT Fri May 12 2023

OKZ004>048-050>052-TXZ083>090-131815-
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-
109 PM CDT Fri May 12 2023

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

.DAY ONE...Today and Tonight...

.Thunderstorms...
Thunderstorms are expected this afternoon and evening. Initial
development will likely be in central and southwest Oklahoma, with
a risk of large hail and damaging winds. Storms will grow into a
line as they move southeastward into southeast Oklahoma, with
damaging winds becoming the primary risk.

.Heavy Rain...
Slow moving thunderstorms this afternoon into the early evening
may lead to areas of flash flooding. A flood watch is in effect
for western north Texas and the southern half of Oklahoma.

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

.Thunderstorms...
Thunderstorms will be possible every day from Saturday through
Thursday. On Saturday, a few strong to severe storms will be
possible with damaging winds and large hail the hazards. Flooding
will be a concern as well Saturday and Sunday, especially across
western north Texas and the southern half of Oklahoma.

.Heavy Rain...
A flood watch is in effect across western north Texas and the
southern half of Oklahoma for Saturday and Sunday.

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, May 12, 3:01 PM CDT, 40 minutes before

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Special weather statement, May 12, 3:28 PM CDT, 13 minutes before

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Special weather statement, May 12, 3:29 PM CDT, 12 minutes before

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Special weather statement, May 12, 3:39 PM CDT, 2 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
May 11, 7:00 PM CDT	Tornado Warning	OUN	Canadian, Grady	30 min
May 11, 7:13 PM CDT	Tornado Warning	OUN	Cleveland, Grady, McClain	32 min
May 11, 7:16 PM CDT	Tornado Warning	OUN	Grady	29 min
May 11, 7:30 PM CDT	Areal Flood Advisory	OUN	Grady	3 hr
May 11, 7:37 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan, Noble, Payne	14 min
May 11, 7:37 PM CDT	Tornado Warning	OUN	Cleveland, Grady, McClain	38 min
May 11, 7:45 PM CDT	Tornado Warning Tornado observed	OUN	Grady	45 min
May 11, 7:50 PM CDT	Severe Thunderstorm Warning	OUN	Grady, McClain	40 min
May 11, 8:03 PM CDT	Tornado Warning	OUN	Cleveland, Grady, McClain	42 min
May 11, 8:14 PM CDT	Tornado Warning	OUN	Grady, McClain	31 min
May 11, 8:17 PM CDT	Tornado Warning	OUN	Cleveland, McClain	43 min
May 11, 8:26 PM CDT	Areal Flood Advisory	OUN	Cleveland, Oklahoma	3 hr
May 11, 8:34 PM CDT	Special Weather Statement	OUN	Payne	26 min
May 11, 8:34 PM CDT	Tornado Warning	OUN	Grady	26 min
May 11, 8:43 PM CDT	Tornado Warning Tornado observed	OUN	Cleveland, McClain, Pottawatomie	47 min
May 11, 8:48 PM CDT	Tornado Warning	OUN	Cleveland, Oklahoma	27 min
May 11, 8:57 PM CDT	Tornado Warning	OUN	Garvin, McClain, Pontotoc, Pottawatomie	33 min
May 11, 8:58 PM CDT	Areal Flood Advisory	OUN	Grady, McClain	3 hr
May 11, 9:25 PM CDT	Tornado Warning	OUN	Cleveland, McClain	50 min
May 11, 9:26 PM CDT	Tornado Warning	OUN	Pottawatomie, Seminole	49 min
May 11, 9:27 PM CDT	Tornado Warning	OUN	Cleveland, Oklahoma, Pottawatomie	30 min
May 11, 9:35 PM CDT	Areal Flood Advisory	OUN	Cleveland, McClain	3 hr
May 11, 10:08 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Pottawatomie	52 min
May 11, 10:12 PM CDT	Tornado Warning	OUN	Pottawatomie, Seminole	33 min
May 11, 10:14 PM CDT	Special Weather Statement	OUN	Coal, Hughes	31 min
May 11, 10:16 PM CDT	Tornado Warning	OUN	Cleveland, Pottawatomie	44 min
May 11, 10:19 PM CDT	Special Weather Statement	OUN	Payne	26 min
May 11, 10:28 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc	47 min
May 11, 10:57 PM CDT	Tornado Warning	OUN	Coal, Pontotoc	48 min
May 11, 11:05 PM CDT	Special Weather Statement	OUN	Pottawatomie	25 min
May 11, 11:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Coal, Hughes, Pontotoc	45 min
May 11, 11:21 PM CDT	Tornado Warning	OUN	Coal, Hughes	24 min
May 11, 11:32 PM CDT	Tornado Warning	OUN	Coal, Hughes, Pontotoc	43 min
May 11, 11:52 PM CDT	Areal Flood Advisory	OUN	Atoka, Coal, Hughes, Pontotoc	3 hr
May 11, 11:58 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Pontotoc	32 min
May 12, 12:26 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes	49 min
May 12, 1:05 AM CDT	Flash Flood Warning	OUN	Coal, Hughes	5 hr
May 12, 1:14 AM CDT	Special Weather Statement	OUN	Atoka, Coal	31 min
May 12, 1:26 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	34 min
May 12, 1:56 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc	49 min
May 12, 2:46 AM CDT	Special Weather Statement	OUN	Atoka	29 min
May 12, 3:27 AM CDT	Special Weather Statement	OUN	Atoka	33 min
May 12, 9:59 AM CDT	Flood Watch	OUN	Atoka, Beckham, Blaine, Bryan, Caddo, Canadian and 31 more	3 days
May 12, 1:46 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady	23 min
May 12, 3:01 PM CDT	Special Weather Statement	OUN	Grady	29 min
May 12, 3:29 PM CDT	Special Weather Statement	OUN	McClain	31 min
May 12, 3:54 PM CDT	Special Weather Statement	OUN	Cotton	36 min
May 12, 3:55 PM CDT	Special Weather Statement	OUN	Grady	20 min
May 12, 4:18 PM CDT	Severe Thunderstorm Warning	OUN	Grady, McClain	42 min
May 12, 4:51 PM CDT	Special Weather Statement	OUN	Grady	24 min
May 12, 4:57 PM CDT	Severe Thunderstorm Warning	OUN	Grady, McClain	48 min
May 12, 4:59 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	46 min
May 12, 5:38 PM CDT	Special Weather Statement	OUN	Noble	37 min
May 12, 5:42 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain	23 min
May 12, 5:43 PM CDT	Special Weather Statement	OUN	Kingfisher	32 min
May 12, 5:43 PM CDT	Severe Thunderstorm Warning	OUN	Grady	47 min
May 12, 5:52 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	53 min
May 12, 5:58 PM CDT	Severe Thunderstorm Warning	OUN	Kay	47 min
May 12, 6:29 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	46 min
May 12, 6:36 PM CDT	Severe Thunderstorm Warning	OUN	Kay	39 min
May 12, 6:43 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	15 min
May 12, 6:59 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	46 min
May 12, 3:28 PM CDT	Special Weather Statement	OUN	Baylor, Wichita	32 min
May 12, 3:39 PM CDT	Special Weather Statement	OUN	Knox	36 min
May 12, 3:43 PM CDT	Severe Thunderstorm Warning	OUN	Knox	47 min
May 12, 3:56 PM CDT	Areal Flood Advisory	OUN	Knox	3 hr
May 12, 4:18 PM CDT	Special Weather Statement	OUN	Baylor	27 min
May 12, 4:30 PM CDT	Special Weather Statement	OUN	Knox	30 min
May 12, 4:43 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	47 min
May 12, 5:01 PM CDT	Areal Flood Advisory	OUN	Knox	3 hr
May 12, 5:28 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	47 min
May 12, 5:47 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Knox, Wilbarger	43 min
May 12, 5:53 PM CDT	Severe Thunderstorm Warning	OUN	Knox	37 min
May 12, 6:12 PM CDT	Special Weather Statement	OUN	Wichita	33 min
May 12, 6:15 PM CDT	Special Weather Statement	OUN	Knox	30 min
May 12, 6:27 PM CDT	Areal Flood Advisory	OUN	Baylor	3 hr
May 12, 6:29 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	46 min
May 12, 6:31 PM CDT	Special Weather Statement	OUN	Knox	29 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; radar from the NEXRAD Level II archive.