Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 520, NWS Norman, OK

June 1, 2019Cotton County, Tillman County, Oklahoma; Wichita County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Jun 1, 2019, 3:18 PM CDT for Cotton County, Tillman County, Oklahoma; Wichita County, Texas. It was in force for 42 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: Jun 1, 2019, 3:18 PM CDT (20:18 UTC)
Expired: Jun 1, 2019, 4:00 PM CDT
In force: 42 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cotton County, OK, Tillman County, OK, Wichita County, TX

The radar

The Altus AFB radar (KFDR), 33 km from the middle of the area, began a volume at 20:19 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, 8.3 hours before the alert went out and 299 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: 1470 J/kg
Mixed-layer CIN: -116 J/kg
Mixed-layer LCL: 1268 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Jun 1, 1:12 PM CDT, 2 hours 6 minutes earlier.

Area forecast discussion, Jun 1, 1:12 PM CDT, 2 hours 6 minutes before

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Hazardous weather outlook, Jun 1, 12:05 PM CDT, 3 hours 13 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
1205 PM CDT Sat Jun 1 2019

OKZ004>048-050>052-TXZ083>090-021130-
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-
1205 PM CDT Sat Jun 1 2019

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

.DAY ONE...This afternoon and tonight...

.Thunderstorms...
There is a slight risk of severe thunderstorms this afternoon and
tonight across northern and western Oklahoma and western north
Texas.

Location...
The slight risk area is northwest of a line from Stillwater to
Okarche to Fort Cobb to Frederick Oklahoma to Seymour Texas.

Timing...
through 3 AM.

Impacts...
Winds up to 60 to 70 mph.
Hail quarter to golf ball size.
Heavy rainfall.

Discussion...
A cluster of thunderstorms across northwest Oklahoma will continue
to move southeast through the afternoon. Gusty winds and heavy
rainfall will occur with the stronger storms. Some intensification
may occur during the afternoon, especially across west central
and southwest Oklahoma.

Thunderstorms are expected to develop over the High Plains of
eastern Colorado, western Kansas and the western panhandles this
afternoon and move east and southeast potentially reaching
portions of western Oklahoma and western north Texas early this
evening. Storms will become more widespread overnight. The
primary threat will be strong and potentially damaging winds with
these storms, although some large hail may also occur. Locally
heavy rainfall will also be possible.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
Storm spotter groups and emergency management personnel across
the slight risk area should prepare for potential severe weather
operations this afternoon through early Sunday morning.

.DAYS TWO THROUGH SEVEN...Sunday through Friday...

.Thunderstorms...
An active weather pattern will persist over the next seven days
with at least a chance of thunderstorms each day somewhere over
Oklahoma and north Texas. There is a marginal risk of severe
weather across much of the area on Sunday and Sunday night, and
again over northwest Oklahoma on Monday and Monday night. Locally
heavy rainfall and flooding will also be possible, especially on
Sunday night.

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

In the hours before

Special weather statement, Jun 1, 2:14 PM CDT, 1 hour 4 minutes before

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Local storm report, Jun 1, 2:21 PM CDT, 57 minutes before

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Special weather statement, Jun 1, 2:21 PM CDT, 57 minutes before

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Special weather statement, Jun 1, 2:38 PM CDT, 40 minutes before

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Special weather statement, Jun 1, 2:51 PM CDT, 27 minutes before

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Special weather statement, Jun 1, 3:09 PM CDT, 9 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
Jun 1, 7:54 AM CDT	Special Weather Statement	OUN	Harper	36 min
Jun 1, 8:23 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper	52 min
Jun 1, 9:05 AM CDT	Special Weather Statement	OUN	Harper	25 min
Jun 1, 9:13 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woods, Woodward	47 min
Jun 1, 10:04 AM CDT	Special Weather Statement	OUN	Ellis, Woods, Woodward	56 min
Jun 1, 10:47 AM CDT	Special Weather Statement	OUN	Dewey	28 min
Jun 1, 11:48 AM CDT	Special Weather Statement	OUN	Blaine, Custer, Washita	57 min
Jun 1, 12:37 PM CDT	Special Weather Statement	OUN	Canadian	38 min
Jun 1, 12:49 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady, Kingfisher	41 min
Jun 1, 1:19 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Cleveland, Grady, Kingfisher, Logan and 2 more	41 min
Jun 1, 1:45 PM CDT	Special Weather Statement	OUN	Grady, McClain	30 min
Jun 1, 1:56 PM CDT	Areal Flood Advisory	OUN	Logan, Oklahoma	2 hr
Jun 1, 1:57 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Logan, Oklahoma, Pottawatomie	38 min
Jun 1, 2:21 PM CDT	Special Weather Statement	OUN	Garvin, McClain	39 min
Jun 1, 2:51 PM CDT	Special Weather Statement	OUN	Garvin	24 min
Jun 1, 3:20 PM CDT	Special Weather Statement	OUN	Tillman	25 min
Jun 1, 3:22 PM CDT	Special Weather Statement	OUN	Murray, Pontotoc	53 min
Jun 1, 3:25 PM CDT	Special Weather Statement	OUN	Jackson	50 min
Jun 1, 3:38 PM CDT	Special Weather Statement	OUN	Cotton	37 min
Jun 1, 3:46 PM CDT	Special Weather Statement	OUN	Cotton	29 min
Jun 1, 4:11 PM CDT	Special Weather Statement	OUN	Johnston	49 min
Jun 1, 4:16 PM CDT	Areal Flood Advisory	OUN	Cotton, Jefferson, Tillman	3 hr
Jun 1, 4:24 PM CDT	Special Weather Statement	OUN	Tillman	51 min
Jun 1, 4:30 PM CDT	Special Weather Statement	OUN	Harmon	45 min
Jun 1, 4:36 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	39 min
Jun 1, 4:38 PM CDT	Special Weather Statement	OUN	Cotton	52 min
Jun 1, 4:59 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	46 min
Jun 1, 5:42 PM CDT	Special Weather Statement	OUN	Jackson	48 min
Jun 1, 2:12 PM CDT	Special Weather Statement	OUN	Wilbarger	33 min
Jun 1, 2:14 PM CDT	Special Weather Statement	OUN	Baylor	31 min
Jun 1, 2:38 PM CDT	Special Weather Statement	OUN	Wilbarger	37 min
Jun 1, 3:09 PM CDT	Special Weather Statement	OUN	Wichita	36 min
Jun 1, 3:36 PM CDT	Special Weather Statement	OUN	Wichita	24 min
Jun 1, 4:23 PM CDT	Special Weather Statement	OUN	Clay	22 min
Jun 1, 4:27 PM CDT	Special Weather Statement	OUN	Hardeman	33 min
Jun 1, 4:47 PM CDT	Special Weather Statement	OUN	Clay	28 min
Jun 1, 5:01 PM CDT	Special Weather Statement	OUN	Wilbarger	29 min
Jun 1, 5:04 PM CDT	Areal Flood Advisory	OUN	Hardeman, Wilbarger	3 hr
Jun 1, 5:07 PM CDT	Areal Flood Advisory	OUN	Archer, Clay	3 hr
Jun 1, 5:16 PM CDT	Special Weather Statement	OUN	Clay	29 min
Jun 1, 5:24 PM CDT	Special Weather Statement	OUN	Hardeman	51 min
Jun 1, 5:32 PM CDT	Flash Flood Warning	OUN	Archer, Clay	6 hr
Jun 1, 5:35 PM CDT	Special Weather Statement	OUN	Wilbarger	25 min
Jun 1, 5:40 PM CDT	Special Weather Statement	OUN	Clay	35 min
Jun 1, 5:54 PM CDT	Special Weather Statement	OUN	Wilbarger	36 min
Jun 1, 5:56 PM CDT	Special Weather Statement	OUN	Hardeman	49 min
Jun 1, 6:02 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	43 min
Jun 1, 6:25 PM CDT	Special Weather Statement	OUN	Archer	50 min
Jun 1, 6:32 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor, Wichita, Wilbarger	43 min
Jun 1, 6:37 PM CDT	Special Weather Statement	OUN	Wilbarger	38 min
Jun 1, 6:59 PM CDT	Special Weather Statement	OUN	Foard, Hardeman	31 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019 Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.