Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 375, NWS Norman, OK

May 23, 2020Archer County, Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 23, 2020, 3:04 AM CDT for Archer County, Clay County, Texas. It was in force for 16 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, 3:04 AM CDT (08:04 UTC)
Expired: May 23, 2020, 3:20 AM CDT
In force: 16 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Archer County, TX, Clay County, TX

The radar

The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 08:04 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

Fort Worth, TX (KFWD), launched 00:00Z, 8.1 hours before the alert went out and 145 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: 2660 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 1650 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 10.6

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, 43 minutes earlier.

Area forecast discussion, May 23, 2:21 AM CDT, 43 minutes before

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Hazardous weather outlook, May 22, 11:57 AM CDT, 15 hours 7 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1157 AM CDT Fri May 22 2020

OKZ004>048-050>052-TXZ083>090-231700-
Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield-
Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne-
Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain-
Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson-
Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton-
Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman-
Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay-
1157 AM CDT Fri May 22 2020

This hazardous weather outlook is for portions of northern...
western...central...and southern Oklahoma...and western north
Texas.

.DAY ONE...This Afternoon through Tonight...

.Thunderstorms...
Thunderstorms are likely to develop near a remnant outflow
boundary across western-north Texas later this afternoon, most
likely not until around 3pm. Hail up to two inches in diameter
and wind gusts up to 70 mph will be possible with these storms.
The most likely locations to be impacted are south of a line from
Altus to Waurika.

A cluster of storms may evolve this evening and move eastward
across southern Oklahoma with a continued threat of severe
weather. This evening, the primary threat will transition to
damaging winds, although large hail may still be possible with the
strongest storms. A tornado or two is possible, especially near
and south of the Red River during the early to mid evening.
Individual storm motion will be east-northeasterly at 15 to 25
mph. The severe weather threat should diminish early tonight as
storms weaken and move southeast of the area.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across
the risk areas should prepare for severe weather operations late
this afternoon and tonight.

.Heavy Rainfall...
Heavy rainfall will be possible this morning across parts of
southeastern Oklahoma. Additional heavy rainfall will be possible
late this afternoon and tonight across southern Oklahoma and
western north Texas.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday...

.Thunderstorms...
Thunderstorms are expected to continue off and on through next
Thursday. A Marginal Risk covers the area west of Alva to Hobart
to Archer City Texas on Saturday, mainly during the evening.
Severe thunderstorms will also be possible on Sunday, but details
are still uncertain regarding timing and location.

.Heavy rain...
Heavy rainfall is possible, particularly on Friday, and again
Sunday night into Monday. Heavy rainfall may lead to flooding.

Get graphics and more details at weather.gov/norman...and follow
our weather forecast office on Twitter and Facebook.

In the hours before

Local storm report, May 23, 12:43 AM CDT, 2 hours 21 minutes before

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Local storm report, May 23, 12:49 AM CDT, 2 hours 15 minutes before

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Local storm report, May 23, 12:52 AM CDT, 2 hours 12 minutes before

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Local storm report, May 23, 12:53 AM CDT, 2 hours 11 minutes before

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Special weather statement, May 23, 1:28 AM CDT, 1 hour 36 minutes before

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Local storm report, May 23, 1:33 AM CDT, 1 hour 31 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, 5:25 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa	50 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, 8:01 AM CDT	River Flood Warning	OUN	Wichita, Wilbarger	72 hr

Nearby

Severe Thunderstorm Warnings in Texas, 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.