Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 308, NWS Norman, OK

May 30, 2022Grant County, Kay County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 30, 2022, 7:44 PM CDT for Grant County, Kay 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 30, 2022, 7:44 PM CDT (00:44 UTC)
Expired: May 30, 2022, 8:30 PM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Grant County, OK, Kay County, OK

The radar

The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 00:44 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

Topeka, KS (KTOP), launched 00:00Z, 0.7 hours before the alert went out and 292 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: 1601 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1401 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.9

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 30, 7:14 PM CDT, 30 minutes earlier.

Area forecast discussion, May 30, 7:14 PM CDT, 30 minutes before

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Hazardous weather outlook, May 30, 12:39 PM CDT, 7 hours 5 minutes before

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In the hours before

Special weather statement, May 30, 7:07 PM CDT, 37 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 30, 7:07 PM CDT	Special Weather Statement	OUN	Grant	23 min
May 30, 7:14 PM CDT	Severe Thunderstorm Warning	OUN	Grant	46 min
May 30, 8:28 PM CDT	Special Weather Statement	OUN	Kay	32 min
May 31, 3:35 AM CDT	Flood Watch	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 27 more	51 hr
May 31, 2:49 PM CDT	Special Weather Statement	OUN	Dewey	26 min
May 31, 3:15 PM CDT	Special Weather Statement	OUN	Dewey	45 min
May 31, 3:48 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Dewey, Roger Mills, Washita	42 min
May 31, 4:14 PM CDT	Special Weather Statement	OUN	Grant	46 min
May 31, 4:18 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Greer, Harmon	42 min
May 31, 4:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Custer, Dewey, Roger Mills, Washita	46 min
May 31, 4:38 PM CDT	Severe Thunderstorm Warning	OUN	Grant	52 min
May 31, 4:47 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Dewey, Major, Woodward	12 min
May 31, 4:53 PM CDT	Areal Flood Advisory	OUN	Custer, Roger Mills	3 hr
May 31, 4:58 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon	15 min
May 31, 5:08 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Custer, Dewey	52 min
May 31, 5:09 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	51 min
May 31, 5:11 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Custer, Roger Mills, Washita	49 min
May 31, 5:11 PM CDT	Severe Thunderstorm Warning	OUN	Grant	49 min
May 31, 5:22 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Roger Mills	38 min
May 31, 5:30 PM CDT	Special Weather Statement	OUN	Alfalfa	30 min
May 31, 5:37 PM CDT	Flash Flood Warning	OUN	Custer, Roger Mills	3 hr
May 31, 5:37 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Greer, Harmon	53 min
May 31, 5:40 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	35 min
May 31, 5:55 PM CDT	Tornado Warning Tornado observed	OUN	Greer, Harmon	24 min
May 31, 6:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Beckham, Blaine, Custer, Dewey, Roger Mills	44 min
May 31, 6:14 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	46 min
May 31, 6:25 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Harmon	50 min
May 31, 6:40 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Dewey, Ellis, Roger Mills, Woodward	50 min
May 31, 6:44 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Blaine, Caddo, Custer, Dewey, Washita	46 min
May 31, 6:49 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Greer, Harmon, Jackson, Kiowa, Tillman	41 min
May 31, 6:53 PM CDT	Tornado Warning	OUN	Harmon	15 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2022 Every severe thunderstorm warning in 2022

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.