Alert archive / Oklahoma / Special Weather Statements in 2020

Special Weather Statement, NWS Norman, OK

April 22, 2020Kingfisher County, Oklahoma

NWS Norman, OK issued this special weather statement at Apr 22, 2020, 5:21 AM CDT for Kingfisher County, Oklahoma. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 22, 2020, 5:21 AM CDT (10:21 UTC)
Expired: Apr 22, 2020, 5:45 AM CDT
In force: 24 min
Issued by: NWS Norman, OK

County Kingfisher County, OK

The radar

The Vance AFB radar (KVNX), 85 km from the middle of the area, began a volume at 10:25 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 98 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: 46 J/kg
Mixed-layer CIN: -146 J/kg
Mixed-layer LCL: 2104 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 279 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 22, 2:57 AM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Apr 22, 2:57 AM CDT, 2 hours 24 minutes before

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Hazardous weather outlook, Apr 22, 4:59 AM CDT, 22 minutes before

Hazardous Weather Outlook
National Weather Service Norman OK
459 AM CDT Wed Apr 22 2020

OKZ004>048-050>052-TXZ083>090-231000-
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-
459 AM CDT Wed Apr 22 2020

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

.DAY ONE...Today and Tonight...

.Thunderstorms...
Early this morning, strong to severe thunderstorms with a threat
of large hail up to golf ball size will occur in northwest
Oklahoma. Additional storm development along with a greater threat
for storms to be severe is expected by late morning or midday
further south into portions of central and southern Oklahoma and
western north Texas.

The most intense storms of the day are expected from midday
through the afternoon across south-central and southeast Oklahoma,
including Ardmore, Ada, Durant, Shawnee and surrounding areas.
Across this area, large hail up to baseball size and damaging
winds could accompany the storms and a few tornadoes are
possible. Severe storms will move out of the area by early
evening.

Storm movement today is expected to be northeastward at 30 to 40
mph.

.Heavy Rainfall and Flooding...
Localized flooding is possible in areas where multiple storms
occur. This is most likely across northern Oklahoma through the
afternoon.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday...

.Thunderstorms...
Thunderstorms will be possible Thursday night into Friday. The
chance of severe storms is low.

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, Apr 22, 3:58 AM CDT, 1 hour 23 minutes before

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Special weather statement, Apr 22, 4:28 AM CDT, 53 minutes before

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Local storm report, Apr 22, 4:42 AM CDT, 39 minutes before

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Special weather statement, Apr 22, 4:48 AM CDT, 33 minutes before

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Special weather statement, Apr 22, 4:49 AM CDT, 32 minutes before

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Special weather statement, Apr 22, 5:21 AM CDT, 0 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
Apr 21, 7:09 PM CDT	Special Weather Statement	OUN	Washita	36 min
Apr 21, 7:15 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	60 min
Apr 21, 7:24 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	66 min
Apr 21, 7:32 PM CDT	Special Weather Statement	OUN	Beckham	28 min
Apr 21, 7:33 PM CDT	Special Weather Statement	OUN	Caddo	27 min
Apr 21, 7:40 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	50 min
Apr 21, 7:56 PM CDT	Special Weather Statement	OUN	Beckham	34 min
Apr 21, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills, Washita	39 min
Apr 21, 8:13 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills	62 min
Apr 21, 8:17 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Custer, Washita	58 min
Apr 21, 8:18 PM CDT	Tornado Warning	OUN	Beckham, Custer, Washita	19 min
Apr 21, 8:24 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	51 min
Apr 21, 8:28 PM CDT	Special Weather Statement	OUN	Greer	32 min
Apr 21, 8:34 PM CDT	Areal Flood Advisory	OUN	Caddo, Washita	3 hr
Apr 21, 8:40 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills, Washita	50 min
Apr 21, 8:45 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	45 min
Apr 21, 8:50 PM CDT	Areal Flood Advisory	OUN	Beckham, Custer, Roger Mills, Washita	3 hr
Apr 21, 9:04 PM CDT	Special Weather Statement	OUN	Greer	26 min
Apr 21, 9:08 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	67 min
Apr 21, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	43 min
Apr 21, 9:20 PM CDT	Severe Thunderstorm Warning	OUN	Washita	40 min
Apr 21, 9:33 PM CDT	Special Weather Statement	OUN	Kiowa	27 min
Apr 21, 9:46 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	44 min
Apr 21, 9:54 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Kiowa, Washita	66 min
Apr 21, 9:56 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	64 min
Apr 21, 10:01 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	44 min
Apr 21, 10:06 PM CDT	Areal Flood Advisory	OUN	Washita	3 hr
Apr 21, 10:18 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	42 min
Apr 21, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	45 min
Apr 21, 10:39 PM CDT	Special Weather Statement	OUN	Roger Mills	36 min
Apr 21, 10:49 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	56 min
Apr 21, 10:54 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady, Stephens	66 min
Apr 21, 11:00 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	45 min
Apr 21, 11:09 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	51 min
Apr 21, 11:28 PM CDT	Tornado Warning	OUN	Comanche, Grady, Stephens	32 min
Apr 21, 11:39 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	26 min
Apr 21, 11:43 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Kiowa	62 min
Apr 21, 11:47 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Jefferson, Stephens	43 min
Apr 21, 11:48 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Grady, Stephens	57 min
Apr 21, 11:53 PM CDT	Tornado Warning	OUN	Stephens	52 min
Apr 22, 12:04 AM CDT	Severe Thunderstorm Warning	OUN	Dewey	41 min
Apr 22, 12:14 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Grady, Stephens	31 min
Apr 22, 12:16 AM CDT	Tornado Warning	OUN	Carter, Garvin, Murray, Stephens	27 min
Apr 22, 12:26 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray, Stephens	64 min
Apr 22, 12:33 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Stephens	57 min
Apr 22, 12:44 AM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, Stephens	46 min
Apr 22, 1:10 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Murray	50 min
Apr 22, 1:24 AM CDT	Areal Flood Advisory	OUN	Carter, Garvin, Murray	3 hr
Apr 22, 1:26 AM CDT	Special Weather Statement	OUN	Garvin	34 min
Apr 22, 1:26 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Stephens	49 min
Apr 22, 1:49 AM CDT	Flash Flood Warning	OUN	Carter, Murray	3 hr
Apr 22, 1:50 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston	70 min
Apr 22, 2:00 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	45 min
Apr 22, 2:06 AM CDT	River Flood Warning	OUN	Pottawatomie, Seminole	25 hr
Apr 22, 2:14 AM CDT	Special Weather Statement	OUN	Johnston	31 min
Apr 22, 2:24 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston	51 min
Apr 22, 2:34 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Marshall	41 min
Apr 22, 2:57 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	18 min
Apr 22, 3:12 AM CDT	Severe Thunderstorm Warning	OUN	Bryan, Johnston, Marshall	29 min
Apr 22, 3:58 AM CDT	Special Weather Statement	OUN	Woods	32 min
Apr 22, 4:28 AM CDT	Special Weather Statement	OUN	Ellis	32 min
Apr 22, 4:34 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills, Woodward	41 min
Apr 22, 4:48 AM CDT	Special Weather Statement	OUN	Alfalfa	27 min
Apr 22, 4:49 AM CDT	Special Weather Statement	OUN	Garfield	26 min
Apr 22, 4:53 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Grant, Woods	52 min
Apr 22, 5:03 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	42 min
Apr 22, 5:09 AM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Woodward	51 min
Apr 22, 5:22 AM CDT	Special Weather Statement	OUN	Atoka, Coal	38 min
Apr 22, 5:32 AM CDT	Flood Watch	OUN	Alfalfa, Garfield, Grant, Kay, Major, Noble and 1 more	13 hr
Apr 22, 5:41 AM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Kay, Logan, Noble and 1 more	49 min
Apr 22, 5:52 AM CDT	Severe Thunderstorm Warning	OUN	Harper, Major, Woods, Woodward	53 min
Apr 22, 6:23 AM CDT	Severe Thunderstorm Warning	OUN	Kay, Noble, Payne	52 min
Apr 22, 6:46 AM CDT	Special Weather Statement	OUN	Woods	29 min
Apr 22, 7:15 AM CDT	Special Weather Statement	OUN	Kay	30 min
Apr 22, 7:33 AM CDT	Special Weather Statement	OUN	Kay	27 min
Apr 22, 7:58 AM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	47 min
Apr 22, 8:00 AM CDT	Special Weather Statement	OUN	Kay	30 min
Apr 22, 8:19 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa, Tillman	41 min
Apr 22, 8:22 AM CDT	Special Weather Statement	OUN	Atoka	38 min
Apr 22, 8:33 AM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	42 min

Nearby

Special Weather Statements in Oklahoma, 2020 Every special weather statement 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.