Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 321, NWS Norman, OK

June 12, 20234 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 12, 2023, 6:24 AM CDT for 4 counties in Oklahoma. It was in force for 51 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: Jun 12, 2023, 6:24 AM CDT (11:24 UTC)
Expired: Jun 12, 2023, 7:15 AM CDT
In force: 51 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Caddo County, OK, Comanche County, OK, Grady County, OK, Stephens County, OK

The radar

The Altus AFB radar (KFDR), 92 km from the middle of the area, began a volume at 11:25 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 12, 4:39 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 11.4 hours before the alert went out and 236 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: 2459 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1981 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 78 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.7

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 Jun 12, 6:09 AM CDT, 15 minutes earlier.

Area forecast discussion, Jun 12, 6:09 AM CDT, 15 minutes before

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Hazardous weather outlook, Jun 12, 2:17 AM CDT, 4 hours 7 minutes before

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In the hours before

Special weather statement, Jun 12, 5:30 AM CDT, 54 minutes before

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Special weather statement, Jun 12, 5:35 AM CDT, 49 minutes before

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Special weather statement, Jun 12, 5:37 AM CDT, 47 minutes before

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Special weather statement, Jun 12, 5:49 AM CDT, 35 minutes before

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Special weather statement, Jun 12, 6:07 AM CDT, 17 minutes before

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Special weather statement, Jun 12, 6:15 AM CDT, 9 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
Jun 12, 4:05 AM CDT	Special Weather Statement	OUN	Beckham	25 min
Jun 12, 4:20 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	40 min
Jun 12, 4:23 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	52 min
Jun 12, 4:32 AM CDT	Special Weather Statement	OUN	Cleveland	28 min
Jun 12, 4:47 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	32 min
Jun 12, 4:53 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Kiowa, Roger Mills, Washita	52 min
Jun 12, 4:54 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Jefferson	51 min
Jun 12, 5:11 AM CDT	Special Weather Statement	OUN	Comanche	34 min
Jun 12, 5:14 AM CDT	Special Weather Statement	OUN	Pottawatomie	31 min
Jun 12, 5:30 AM CDT	Special Weather Statement	OUN	Roger Mills	30 min
Jun 12, 5:35 AM CDT	Special Weather Statement	OUN	Pontotoc	25 min
Jun 12, 5:37 AM CDT	Special Weather Statement	OUN	Carter	23 min
Jun 12, 5:44 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	46 min
Jun 12, 5:49 AM CDT	Special Weather Statement	OUN	Beckham	26 min
Jun 12, 6:04 AM CDT	Severe Thunderstorm Warning	OUN	Washita	41 min
Jun 12, 6:07 AM CDT	Special Weather Statement	OUN	Custer	23 min
Jun 12, 6:15 AM CDT	Special Weather Statement	OUN	Pontotoc	30 min
Jun 12, 6:37 AM CDT	Areal Flood Advisory	OUN	Blaine, Caddo, Custer	3 hr
Jun 12, 6:47 AM CDT	Special Weather Statement	OUN	Caddo	28 min
Jun 12, 7:02 AM CDT	Areal Flood Advisory	OUN	Pontotoc	3 hr
Jun 12, 7:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Garvin, Grady, Stephens	50 min
Jun 12, 7:12 AM CDT	Special Weather Statement	OUN	Grady	33 min
Jun 12, 7:29 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain, Pottawatomie	35 min
Jun 12, 7:39 AM CDT	Special Weather Statement	OUN	Garvin	36 min
Jun 12, 7:50 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Garvin, Johnston, Murray, Pontotoc	40 min
Jun 12, 7:56 AM CDT	Special Weather Statement	OUN	Grady	34 min
Jun 12, 8:26 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Atoka, Bryan, Carter, Coal, Johnston, Marshall and 2 more	49 min
Jun 12, 8:48 AM CDT	Special Weather Statement	OUN	Atoka	27 min
Jun 12, 9:05 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Coal, Marshall	40 min
Jun 12, 9:20 AM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Johnston, Murray	3 hr
Jun 12, 9:44 AM CDT	Special Weather Statement	OUN	Choctaw	16 min
Jun 12, 9:53 AM CDT	Special Weather Statement	OUN	Carter, Johnston, Murray	37 min
Jun 12, 10:25 AM CDT	Special Weather Statement	OUN	Johnston, Marshall	35 min
Jun 12, 10:52 AM CDT	Special Weather Statement	OUN	Bryan	23 min
Jun 12, 11:19 AM CDT	Areal Flood Advisory	OUN	Beckham, Custer, Roger Mills, Washita	3 hr
Jun 12, 11:31 AM CDT	Special Weather Statement	OUN	Roger Mills	29 min
Jun 12, 11:58 AM CDT	Special Weather Statement	OUN	Roger Mills	32 min
Jun 12, 1:07 PM CDT	Special Weather Statement	OUN	Custer	23 min
Jun 12, 1:14 PM CDT	Special Weather Statement	OUN	Roger Mills	31 min
Jun 12, 1:42 PM CDT	Special Weather Statement	OUN	Beckham	33 min
Jun 12, 1:50 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills, Washita	25 min
Jun 12, 2:12 PM CDT	Special Weather Statement	OUN	Jackson	33 min
Jun 12, 2:14 PM CDT	Special Weather Statement	OUN	Custer	31 min
Jun 12, 2:19 PM CDT	Special Weather Statement	OUN	Caddo	26 min
Jun 12, 2:37 PM CDT	Special Weather Statement	OUN	Jackson	23 min
Jun 12, 2:38 PM CDT	Special Weather Statement	OUN	Comanche	37 min
Jun 12, 2:58 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Tillman	32 min
Jun 12, 3:27 PM CDT	Special Weather Statement	OUN	Comanche, Cotton	33 min
Jun 12, 3:34 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	41 min
Jun 12, 4:06 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Carter, Jefferson, Love, Stephens	39 min
Jun 12, 4:42 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Johnston, Love, Marshall	48 min
Jun 12, 5:28 PM CDT	Special Weather Statement	OUN	Bryan	47 min
Jun 12, 2:15 AM CDT	Special Weather Statement	OUN	Archer	30 min
Jun 12, 2:28 AM CDT	Severe Thunderstorm Warning	OUN	Archer	47 min
Jun 12, 2:59 AM CDT	Special Weather Statement	OUN	Clay	31 min
Jun 12, 3:32 AM CDT	Special Weather Statement	OUN	Clay	28 min
Jun 12, 2:17 PM CDT	Special Weather Statement	OUN	Archer	28 min
Jun 12, 2:28 PM CDT	Special Weather Statement	OUN	Clay	32 min
Jun 12, 2:35 PM CDT	Severe Thunderstorm Warning	OUN	Archer	25 min
Jun 12, 2:55 PM CDT	Special Weather Statement	OUN	Clay	35 min
Jun 12, 2:59 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	31 min
Jun 12, 3:36 PM CDT	Special Weather Statement	OUN	Clay	24 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.