Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 270, NWS Norman, OK

May 25, 2023Harmon County, Jackson County, Oklahoma; Hardeman County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 25, 2023, 5:07 PM CDT for Harmon County, Jackson County, Oklahoma; Hardeman County, Texas. It was in force for 53 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 25, 2023, 5:07 PM CDT (22:07 UTC)
Expired: May 25, 2023, 6:00 PM CDT
In force: 53 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Harmon County, OK, Jackson County, OK, Hardeman County, TX

The radar

The Altus AFB radar (KFDR), 67 km from the middle of the area, began a volume at 22:07 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 12:00Z, 10.1 hours before the alert went out and 200 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1434 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 49 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 May 24, 6:19 PM CDT, 22 hours 48 minutes earlier.

Area forecast discussion, May 24, 6:19 PM CDT, 22 hours 48 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 24, 11:31 PM CDT	Special Weather Statement	OUN	Beckham	29 min
May 24, 11:32 PM CDT	Special Weather Statement	OUN	Greer	28 min
May 24, 11:59 PM CDT	Special Weather Statement	OUN	Greer	31 min
May 25, 12:02 AM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer	43 min
May 25, 12:11 AM CDT	Areal Flood Advisory	OUN	Greer	3 hr
May 25, 12:17 AM CDT	Special Weather Statement	OUN	Ellis	43 min
May 25, 12:36 AM CDT	Flash Flood Warning	OUN	Greer	3 hr
May 25, 12:48 AM CDT	Special Weather Statement	OUN	Ellis, Roger Mills	57 min
May 25, 1:08 AM CDT	Special Weather Statement	OUN	Roger Mills	52 min
May 25, 1:09 AM CDT	Special Weather Statement	OUN	Custer	51 min
May 25, 1:20 AM CDT	Special Weather Statement	OUN	Beckham	55 min
May 25, 1:40 AM CDT	Areal Flood Advisory	OUN	Custer, Dewey, Roger Mills	3 hr
May 25, 2:05 AM CDT	Special Weather Statement	OUN	Roger Mills	40 min
May 25, 2:25 AM CDT	Areal Flood Advisory	OUN	Beckham, Roger Mills	3 hr
May 25, 2:29 AM CDT	Special Weather Statement	OUN	Beckham	46 min
May 25, 2:44 AM CDT	Flash Flood Warning	OUN	Beckham, Roger Mills	3 hr
May 25, 2:45 AM CDT	Special Weather Statement	OUN	Custer	45 min
May 25, 3:09 AM CDT	Areal Flood Advisory	OUN	Custer	3 hr
May 25, 2:48 PM CDT	Special Weather Statement	OUN	Jackson	27 min
May 25, 3:31 PM CDT	Special Weather Statement	OUN	Jackson	29 min
May 25, 4:00 PM CDT	Special Weather Statement	OUN	Jackson	30 min
May 25, 4:27 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	48 min
May 25, 3:01 PM CDT	Special Weather Statement	OUN	Wichita	29 min
May 25, 3:29 PM CDT	Special Weather Statement	OUN	Archer	31 min
May 25, 3:44 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	46 min
May 25, 4:29 PM CDT	Special Weather Statement	OUN	Baylor	31 min
May 25, 6:03 PM CDT	Special Weather Statement	OUN	Hardeman	27 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023 Severe Thunderstorm Warnings in Texas, 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.