Alert archive / Texas / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 474, NWS Norman, OK

June 23, 2023Tillman County, Oklahoma; 5 counties in Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 23, 2023, 9:38 PM CDT for Tillman County, Oklahoma; 5 counties in Texas. It was in force for 37 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 23, 2023, 9:38 PM CDT (02:38 UTC)
Expired: Jun 23, 2023, 10:15 PM CDT
In force: 37 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.75 in
Wind: 70.0 mph

Counties Tillman County, OK, Baylor County, TX, Foard County, TX, Hardeman County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 43 km from the middle of the area, began a volume at 02:39 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 00:00Z, 2.6 hours before the alert went out and 258 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: 1447 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1267 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 235 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 8.7

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 23, 6:31 PM CDT, 3 hours 7 minutes earlier.

Area forecast discussion, Jun 23, 6:31 PM CDT, 3 hours 7 minutes before

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Hazardous weather outlook, Jun 23, 4:30 PM CDT, 5 hours 8 minutes before

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In the hours before

Local storm report, Jun 23, 4:44 PM CDT, 4 hours 54 minutes before

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Local storm report, Jun 23, 5:06 PM CDT, 4 hours 32 minutes before

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Special weather statement, Jun 23, 8:28 PM CDT, 1 hour 10 minutes before

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Local storm report, Jun 23, 8:49 PM CDT, 49 minutes before

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Local storm report, Jun 23, 8:54 PM CDT, 44 minutes before

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Local storm report, Jun 23, 9:34 PM CDT, 4 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 23, 8:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Jackson	35 min
Jun 23, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	36 min
Jun 23, 11:38 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Tillman	37 min
Jun 23, 11:42 PM CDT	Special Weather Statement	OUN	Jackson	33 min
Jun 24, 3:23 AM CDT	Heat Advisory	OUN	Atoka, Bryan, Carter, Coal, Cotton, Garvin and 9 more	41 hr
Jun 24, 5:08 AM CDT	Special Weather Statement	OUN	Major	37 min
Jun 24, 6:12 AM CDT	Special Weather Statement	OUN	Alfalfa	33 min
Jun 23, 8:28 PM CDT	Special Weather Statement	OUN	Hardeman	17 min
Jun 23, 10:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Baylor, Foard, Wichita, Wilbarger	32 min
Jun 23, 10:18 PM CDT	Special Weather Statement	OUN	Knox	27 min
Jun 23, 10:24 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	51 min
Jun 23, 10:42 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	33 min
Jun 23, 10:48 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman	27 min
Jun 23, 11:04 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Baylor, Foard, Hardeman, Knox, Wilbarger	41 min
Jun 23, 11:15 PM CDT	Special Weather Statement	OUN	Archer	30 min
Jun 23, 11:19 PM CDT	Special Weather Statement	OUN	Hardeman	26 min
Jun 24, 12:10 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	26 min
Jun 24, 12:13 AM CDT	Special Weather Statement	OUN	Archer, Wichita	32 min
Jun 24, 12:44 AM CDT	Special Weather Statement	OUN	Archer, Baylor	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2023 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.