Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 192, NWS Norman, OK

May 5, 2019Alfalfa County, Garfield County, Grant County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 5, 2019, 9:15 PM CDT for Alfalfa County, Garfield County, Grant County, Oklahoma. It was in force for 30 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 5, 2019, 9:15 PM CDT (02:15 UTC)
Expired: May 5, 2019, 9:45 PM CDT
In force: 30 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Alfalfa County, OK, Garfield County, OK, Grant County, OK

The radar

The Vance AFB radar (KVNX), 19 km from the middle of the area, began a volume at 02:15 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 5, 5:51 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.3 hours before the alert went out and 165 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: 1390 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 1111 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 178 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 8.0

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 5, 4:00 PM CDT, 5 hours 15 minutes earlier.

Area forecast discussion, May 5, 4:00 PM CDT, 5 hours 15 minutes before

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Hazardous weather outlook, May 5, 7:58 PM CDT, 1 hour 17 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
758 PM CDT Sun May 5 2019

OKZ004>048-050>052-TXZ083>090-061100-
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-
758 PM CDT Sun May 5 2019

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

.DAY ONE...Through Tonight...

.Thunderstorms...
Scattered strong to severe storms formed late Sunday afternoon
across southwest Kansas and the Texas and Oklahoma Panhandles.
These storms will move east during the evening hours into western
Oklahoma and western north Texas. There is a marginal risk of
severe weather across nearly all of the area late this afternoon
and tonight, and a slight risk of severe weather west of a line
from Ponca City to Oklahoma City to Lawton to Seymour in Texas.
The strongest storms will be capable of producing quarter to golf
ball size hail and 60 to 70 mph wind gusts. Locally heavy rainfall
will also be possible.

.DAYS TWO THROUGH SEVEN...Monday through Saturday...

.Thunderstorms...
Monday, there is a slight risk of severe thunderstorms across
northern and northwestern Oklahoma. Thunderstorms are expected to
develop along a cold front Monday afternoon across southern
Kansas into northwest Oklahoma. These storms will then move south
and southeast across the northern half of Oklahoma. Large hail and
damaging wind gusts will be possible with these storms.

An approaching storm system will bring more widespread severe
weather chances to Oklahoma and north Texas Tuesday and
Wednesday. All severe weather hazards will be possible.

There is also a chance of thunderstorms late Friday into
Saturday.

.Heavy Rainfall...
Heavy rainfall will be possible Tuesday and Wednesday, which could
lead to localized flash flooding.

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, May 5, 8:11 PM CDT, 1 hour 4 minutes before

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Special weather statement, May 5, 8:27 PM CDT, 48 minutes before

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Special weather statement, May 5, 8:46 PM CDT, 29 minutes before

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Special weather statement, May 5, 8:48 PM CDT, 27 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 5, 8:11 PM CDT	Special Weather Statement	OUN	Alfalfa, Woods	34 min
May 5, 8:27 PM CDT	Special Weather Statement	OUN	Major	33 min
May 5, 8:30 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	30 min
May 5, 8:37 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	23 min
May 5, 8:48 PM CDT	Special Weather Statement	OUN	Harmon	27 min
May 5, 8:53 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	52 min
May 5, 8:56 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	49 min
May 5, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	28 min
May 5, 9:21 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	39 min
May 5, 9:32 PM CDT	Flash Flood Warning	OUN	Alfalfa	3 hr
May 5, 9:34 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Woods	41 min
May 5, 9:39 PM CDT	Areal Flood Advisory	OUN	Woods	3 hr
May 5, 9:52 PM CDT	Special Weather Statement	OUN	Washita	38 min
May 5, 9:54 PM CDT	Special Weather Statement	OUN	Kingfisher	36 min
May 5, 10:02 PM CDT	Severe Thunderstorm Warning	OUN	Kay	43 min
May 5, 10:10 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Kay, Noble, Woods	50 min
May 5, 10:15 PM CDT	Special Weather Statement	OUN	Canadian	30 min
May 5, 10:16 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant, Kay, Noble	3 hr
May 5, 10:21 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	39 min
May 5, 10:27 PM CDT	Special Weather Statement	OUN	Kingfisher	33 min
May 5, 10:37 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	38 min
May 5, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Kay	51 min
May 5, 10:44 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	46 min
May 5, 10:55 PM CDT	Special Weather Statement	OUN	Washita	35 min
May 5, 11:05 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Kingfisher, Logan, Noble	40 min
May 5, 11:08 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	52 min
May 5, 11:08 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Custer, Washita	52 min
May 5, 11:14 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	24 min
May 5, 11:17 PM CDT	Special Weather Statement	OUN	Logan	28 min
May 5, 11:35 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Logan, Noble, Payne	40 min
May 5, 11:48 PM CDT	Tornado Warning	OUN	Noble	42 min
May 5, 11:56 PM CDT	Special Weather Statement	OUN	Caddo	34 min
May 5, 11:59 PM CDT	Special Weather Statement	OUN	Kingfisher	31 min
May 6, 12:04 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Noble, Oklahoma, Payne	41 min
May 6, 12:14 AM CDT	Areal Flood Advisory	OUN	Garfield, Noble, Payne	3 hr
May 6, 12:19 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	41 min
May 6, 12:41 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	35 min
May 6, 12:47 AM CDT	Special Weather Statement	OUN	Oklahoma	28 min
May 6, 12:50 AM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	40 min
May 6, 12:53 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	52 min
May 6, 1:23 AM CDT	Areal Flood Advisory	OUN	Garfield, Grant, Kay, Noble	112 min
May 6, 1:26 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Pottawatomie	49 min
May 6, 1:43 AM CDT	Special Weather Statement	OUN	Okfuskee	32 min
May 6, 1:59 AM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	23 min
May 6, 2:03 AM CDT	Special Weather Statement	OUN	Seminole	27 min
May 6, 2:26 AM CDT	Special Weather Statement	OUN	Seminole	34 min
May 6, 2:50 AM CDT	Special Weather Statement	OUN	Hughes	25 min
May 5, 9:18 PM CDT	Special Weather Statement	OUN	Knox	42 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.