Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 392, NWS Norman, OK

May 24, 20206 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 24, 2020, 10:34 PM CDT for 6 counties in Oklahoma. It was in force for 41 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 24, 2020, 10:34 PM CDT (03:34 UTC)
Expired: May 24, 2020, 11:15 PM CDT
In force: 41 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Alfalfa County, OK, Blaine County, OK, Dewey County, OK, Major County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 70 km from the middle of the area, began a volume at 03:36 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

Dodge City, (KDDC), launched 00:00Z, 3.6 hours before the alert went out and 189 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: 1828 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1590 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 97 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 7.4

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 24, 2:52 PM CDT, 7 hours 42 minutes earlier.

Area forecast discussion, May 24, 2:52 PM CDT, 7 hours 42 minutes before

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Hazardous weather outlook, May 24, 11:17 AM CDT, 11 hours 17 minutes before

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In the hours before

Special weather statement, May 24, 5:03 PM CDT, 5 hours 31 minutes before

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Special weather statement, May 24, 5:09 PM CDT, 5 hours 25 minutes before

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Special weather statement, May 24, 6:37 PM CDT, 3 hours 57 minutes before

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Local storm report, May 24, 6:43 PM CDT, 3 hours 51 minutes before

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Special weather statement, May 24, 6:51 PM CDT, 3 hours 43 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, 7:16 PM CDT	Special Weather Statement	OUN	Hughes	29 min
May 24, 7:48 PM CDT	Special Weather Statement	OUN	Ellis	27 min
May 24, 7:58 PM CDT	Special Weather Statement	OUN	Ellis, Roger Mills	32 min
May 24, 8:15 PM CDT	Special Weather Statement	OUN	Ellis	30 min
May 24, 8:27 PM CDT	Special Weather Statement	OUN	Roger Mills	33 min
May 24, 8:33 PM CDT	Special Weather Statement	OUN	Ellis	27 min
May 24, 9:00 PM CDT	Special Weather Statement	OUN	Harper, Woodward	30 min
May 24, 9:01 PM CDT	Special Weather Statement	OUN	Beckham	29 min
May 24, 9:18 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Ellis, Greer, Harmon and 3 more	42 min
May 24, 9:26 PM CDT	Special Weather Statement	OUN	Dewey	34 min
May 24, 9:27 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Harper, Major, Woods, Woodward	33 min
May 24, 9:28 PM CDT	Special Weather Statement	OUN	Harmon	32 min
May 24, 9:59 PM CDT	Special Weather Statement	OUN	Woods	31 min
May 24, 9:59 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Major, Woods, Woodward	46 min
May 24, 10:00 PM CDT	Special Weather Statement	OUN	Custer, Washita	30 min
May 24, 10:10 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Blaine, Caddo, Custer, Dewey, Greer and 3 more	34 min
May 24, 10:16 PM CDT	Special Weather Statement	OUN	Harmon, Jackson	29 min
May 24, 10:46 PM CDT	Special Weather Statement	OUN	Caddo, Kiowa, Tillman, Washita	29 min
May 24, 11:04 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman	26 min
May 24, 11:27 PM CDT	Special Weather Statement	OUN	Kiowa, Tillman	48 min
May 24, 7:09 PM CDT	Special Weather Statement	OUN	Baylor	36 min
May 24, 8:58 PM CDT	Special Weather Statement	OUN	Foard, Hardeman, Knox	32 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020 Every severe thunderstorm warning in 2020

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.