Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 376, NWS Norman, OK

May 23, 2020Comanche County, Jackson County, Kiowa County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 23, 2020, 5:25 AM CDT for Comanche County, Jackson County, Kiowa County, Oklahoma. It was in force for 50 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 23, 2020, 5:25 AM CDT (10:25 UTC)
Expired: May 23, 2020, 6:15 AM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Comanche County, OK, Jackson County, OK, Kiowa County, OK

The radar

The Altus AFB radar (KFDR), 40 km from the middle of the area, began a volume at 10:28 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

Norman, OK (KOUN), launched 00:00Z, 10.4 hours before the alert went out and 152 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: 3106 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 970 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 7.5

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 23, 2:21 AM CDT, 3 hours 4 minutes earlier.

Area forecast discussion, May 23, 2:21 AM CDT, 3 hours 4 minutes before

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Hazardous weather outlook, May 23, 3:45 AM CDT, 1 hour 40 minutes before

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In the hours before

Special weather statement, May 23, 1:28 AM CDT, 3 hours 57 minutes before

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Local storm report, May 23, 1:33 AM CDT, 3 hours 52 minutes before

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Special weather statement, May 23, 3:43 AM CDT, 1 hour 42 minutes before

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Special weather statement, May 23, 4:13 AM CDT, 1 hour 12 minutes before

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Special weather statement, May 23, 4:46 AM CDT, 39 minutes before

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Special weather statement, May 23, 5:21 AM 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
May 22, 7:14 PM CDT	Areal Flood Advisory	OUN	Cotton, Tillman	3 hr
May 22, 7:33 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	27 min
May 22, 7:43 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	32 min
May 22, 7:51 PM CDT	Flash Flood Warning	OUN	Tillman	3 hr
May 22, 7:55 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	50 min
May 22, 8:13 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	32 min
May 22, 8:19 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	26 min
May 22, 8:40 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	50 min
May 22, 8:45 PM CDT	Severe Thunderstorm Warning	OUN	Caddo	45 min
May 22, 8:46 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	44 min
May 22, 9:25 PM CDT	Special Weather Statement	OUN	Caddo	35 min
May 22, 9:29 PM CDT	Flash Flood Warning	OUN	Cotton, Jefferson, Tillman	7 hr
May 22, 9:30 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	45 min
May 22, 9:35 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	40 min
May 22, 9:52 PM CDT	Special Weather Statement	OUN	Bryan	23 min
May 22, 10:13 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	47 min
May 22, 10:54 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	51 min
May 22, 11:12 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Love, Marshall	48 min
May 22, 11:28 PM CDT	High Wind Warning	OUN	Carter, Coal, Hughes, Johnston, Murray, Pontotoc	3 hr
May 22, 11:45 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	30 min
May 23, 12:01 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston, Marshall	59 min
May 23, 12:54 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan	51 min
May 23, 12:57 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	33 min
May 23, 1:31 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	44 min
May 23, 2:13 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	47 min
May 23, 3:03 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	42 min
May 23, 3:43 AM CDT	Special Weather Statement	OUN	Tillman	32 min
May 23, 4:13 AM CDT	Special Weather Statement	OUN	Cotton	32 min
May 23, 4:46 AM CDT	Special Weather Statement	OUN	Cotton	29 min
May 23, 5:21 AM CDT	Special Weather Statement	OUN	Comanche	24 min
May 23, 6:17 AM CDT	Special Weather Statement	OUN	Comanche, Kiowa	28 min
May 23, 6:46 AM CDT	Special Weather Statement	OUN	Comanche	29 min
May 22, 7:13 PM CDT	Severe Thunderstorm Warning	OUN	Wichita	32 min
May 22, 7:23 PM CDT	Tornado Warning	OUN	Clay	52 min
May 22, 7:24 PM CDT	Tornado Warning	OUN	Clay	36 min
May 22, 7:41 PM CDT	Severe Thunderstorm Warning	OUN	Clay	34 min
May 22, 7:42 PM CDT	Severe Thunderstorm Warning	OUN	Knox	33 min
May 22, 7:54 PM CDT	Severe Thunderstorm Warning	OUN	Clay, Wichita	51 min
May 22, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Clay	24 min
May 22, 8:12 PM CDT	Severe Thunderstorm Warning	OUN	Clay	33 min
May 22, 8:32 PM CDT	Severe Thunderstorm Warning	OUN	Clay	43 min
May 22, 8:43 PM CDT	Tornado Warning	OUN	Clay	32 min
May 22, 8:44 PM CDT	Flash Flood Warning	OUN	Clay	2 hr
May 22, 8:48 PM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	42 min
May 22, 9:15 PM CDT	Severe Thunderstorm Warning	OUN	Clay	45 min
May 22, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Clay, Wichita	43 min
May 22, 9:22 PM CDT	Severe Thunderstorm Warning	OUN	Archer	23 min
May 22, 9:40 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	35 min
May 22, 9:44 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	61 min
May 22, 10:38 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	52 min
May 22, 10:45 PM CDT	Flash Flood Warning	OUN	Clay	6 hr
May 22, 10:45 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	45 min
May 22, 10:46 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay, Wichita	18 min
May 22, 11:07 PM CDT	Flash Flood Warning	OUN	Wichita	3 hr
May 22, 11:31 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Clay, Wichita, Wilbarger	59 min
May 23, 12:24 AM CDT	Flash Flood Warning	OUN	Archer, Clay	3 hr
May 23, 12:31 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	59 min
May 23, 12:56 AM CDT	Areal Flood Advisory	OUN	Baylor, Wilbarger	3 hr
May 23, 1:28 AM CDT	Special Weather Statement	OUN	Archer	32 min
May 23, 1:41 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	49 min
May 23, 2:09 AM CDT	Areal Flood Advisory	OUN	Wilbarger	3 hr
May 23, 3:04 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay	16 min
May 23, 8:01 AM CDT	River Flood Warning	OUN	Wichita, Wilbarger	72 hr

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.