Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 488, NWS Norman, OK

May 23, 2024Harmon County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 23, 2024, 4:44 PM CDT for Harmon County, Oklahoma. It was in force for 46 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 23, 2024, 4:44 PM CDT (21:44 UTC)
Expired: May 23, 2024, 5:30 PM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Harmon County, OK

The radar

The Altus AFB radar (KFDR), 90 km from the middle of the area, began a volume at 21:46 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 23, 4:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.7 hours before the alert went out and 177 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: 1080 J/kg
Mixed-layer CIN: -295 J/kg
Mixed-layer LCL: 1051 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 255 m²/s²
0-3 km storm-relative helicity: 294 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 May 23, 1:47 PM CDT, 2 hours 57 minutes earlier.

Area forecast discussion, May 23, 1:47 PM CDT, 2 hours 57 minutes before

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Hazardous weather outlook, May 23, 2:29 PM CDT, 2 hours 15 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
229 PM CDT Thu May 23 2024

OKZ004>048-050>052-TXZ083>090-241930-
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-
229 PM CDT Thu May 23 2024

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...
Thunderstorms will be possible this afternoon through this
evening. Some of these storms could become severe with up to
baseball size hail and 60-80 mph wind gusts as the two main severe
hazards, with a low potential of a tornado.

.Heavy Rain...
There is up to a slight risk for localized flooding through
tonight across southcentral into southeast Oklahoma and a portion
of western north Texas. Should any thunderstorms set up in this
area, heavy rainfall onto already saturated ground could result in
flash flooding especially in low-lying and flood prone areas.

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

.Thunderstorms...
Thunderstorms will be possible on Friday afternoon across
southeast Oklahoma with a low-end risk for severe thunderstorms
with large hail and damaging wind gusts as the severe hazards.
Thunderstorms will be possible again on Saturday afternoon through
the evening with an increased risk for severe weather. Severe
hazards on Saturday will be large hail, damaging wind gusts, and
a few tornados possible. Thunderstorms chances will be returning
again next week on Wednesday.

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 23, 3:59 PM CDT, 45 minutes before

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Special weather statement, May 23, 4:21 PM CDT, 23 minutes before

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Local storm report, May 23, 4:30 PM CDT, 14 minutes before

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Special weather statement, May 23, 4:34 PM CDT, 10 minutes before

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Local storm report, May 23, 4:39 PM CDT, 5 minutes before

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Local storm report, May 23, 4:43 PM CDT, 1 minute 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 22, 10:34 PM CDT	Special Weather Statement	OUN	Bryan	26 min
May 22, 10:58 PM CDT	Special Weather Statement	OUN	Atoka	32 min
May 23, 12:13 AM CDT	Special Weather Statement	OUN	Comanche	32 min
May 23, 12:36 AM CDT	Special Weather Statement	OUN	Cotton	24 min
May 23, 12:38 AM CDT	Special Weather Statement	OUN	Comanche	37 min
May 23, 12:39 AM CDT	Special Weather Statement	OUN	Jefferson	36 min
May 23, 1:00 AM CDT	Special Weather Statement	OUN	Stephens	30 min
May 23, 1:16 AM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	29 min
May 23, 1:18 AM CDT	Special Weather Statement	OUN	Carter	27 min
May 23, 1:39 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Murray	51 min
May 23, 1:44 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Grady, Stephens	46 min
May 23, 2:13 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Pontotoc	47 min
May 23, 2:28 AM CDT	Special Weather Statement	OUN	Murray	32 min
May 23, 2:30 AM CDT	Special Weather Statement	OUN	Pontotoc	30 min
May 23, 2:45 AM CDT	Severe Thunderstorm Warning	OUN	Coal, Johnston, Pontotoc	45 min
May 23, 3:01 AM CDT	Special Weather Statement	OUN	Coal, Hughes, Seminole	29 min
May 23, 3:05 AM CDT	Areal Flood Advisory	OUN	Coal, Pontotoc	3 hr
May 23, 3:11 AM CDT	Special Weather Statement	OUN	Johnston	34 min
May 23, 3:27 AM CDT	Special Weather Statement	OUN	Atoka	33 min
May 23, 3:51 AM CDT	Special Weather Statement	OUN	Atoka, Bryan	24 min
May 23, 4:14 AM CDT	Areal Flood Advisory	OUN	Bryan	3 hr
May 23, 4:15 AM CDT	Special Weather Statement	OUN	Bryan	30 min
May 23, 3:59 PM CDT	Special Weather Statement	OUN	Oklahoma	31 min
May 23, 4:21 PM CDT	Special Weather Statement	OUN	Oklahoma	24 min
May 23, 4:23 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	52 min
May 23, 4:34 PM CDT	Special Weather Statement	OUN	Beckham	26 min
May 23, 4:40 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Roger Mills	50 min
May 23, 4:59 PM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	17 min
May 23, 5:19 PM CDT	Tornado Warning	OUN	Greer, Harmon	41 min
May 23, 5:29 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	46 min
May 23, 5:36 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	24 min
May 23, 5:41 PM CDT	Special Weather Statement	OUN	Roger Mills	34 min
May 23, 5:45 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills	45 min
May 23, 5:58 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Harmon, Jackson	47 min
May 23, 6:03 PM CDT	Tornado Warning	OUN	Beckham	27 min
May 23, 6:05 PM CDT	Tornado Warning	OUN	Harmon	25 min
May 23, 6:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Greer, Harmon	52 min
May 23, 6:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Washita	46 min
May 23, 6:23 PM CDT	Special Weather Statement	OUN	Dewey	37 min
May 23, 6:27 PM CDT	Tornado Warning	OUN	Harmon, Jackson	48 min
May 23, 6:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Greer, Harmon, Jackson	46 min
May 23, 6:48 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Greer, Kiowa, Washita	20 min
May 23, 6:56 PM CDT	Areal Flood Advisory	OUN	Greer, Harmon, Jackson	3 hr
May 22, 7:16 PM CDT	Special Weather Statement	OUN	Knox	29 min
May 22, 7:21 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Foard, Knox	28 min
May 22, 7:46 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Knox	9 min
May 22, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	24 min
May 22, 8:25 PM CDT	Special Weather Statement	OUN	Wichita	20 min
May 23, 5:21 PM CDT	Severe Thunderstorm Warning	OUN	Knox	39 min
May 23, 5:54 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	23 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2024 Every severe thunderstorm warning in 2024

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.