Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 693, NWS Norman, OK

June 23, 2019Alfalfa County, Woods County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 23, 2019, 10:42 PM CDT for Alfalfa County, Woods County, Oklahoma. It was in force for 36 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 23, 2019, 10:42 PM CDT (03:42 UTC)
Expired
Jun 23, 2019, 11:18 PM CDT
In force
36 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Alfalfa County, OK, Woods County, OK

The radar

The Vance AFB radar (KVNX), 42 km from the middle of the area, began a volume at 03:43 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 00:00Z, 3.7 hours before the alert went out and 326 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2019-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 204 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2019-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
204 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
2624 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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 23, 6:19 PM CDT, 4 hours 23 minutes earlier.

Area forecast discussion, Jun 23, 6:19 PM CDT, 4 hours 23 minutes before
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Hazardous weather outlook, Jun 23, 12:00 PM CDT, 10 hours 42 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1200 PM CDT Sun Jun 23 2019

OKZ004>048-050>052-TXZ083>090-241130-
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-
1200 PM CDT Sun Jun 23 2019

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

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

.Thunderstorms...
Thunderstorms will continue to progress slowly south and east
across southern Oklahoma and western north Texas this afternoon
and this evening. Intensification is expected this afternoon.
There is an Enhanced Risk for severe storms across locations
south of Seymour and Wichita Falls in Texas, and south of Waurika,
Davis, and Coalgate in Oklahoma. A Slight Risk extends farther
north to include Wichita Falls, Duncan, Pauls Valley, and Ada.

Damaging wind gusts of 70 mph and hail slightly larger than
golfballs will be possible, primarily in the Enhanced Risk area.
There is also a low risk for tornadoes in the Enhanced Risk area
late this afternoon and early evening.

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

.Heavy Rain and Flooding...
Heavy rain will be possible mainly across southeast Oklahoma
through this evening. Avoid areas that normally flood.

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

.Thunderstorms...
There are low chances for storms across portions of southern
Oklahoma and north Texas Monday, with severe weather unlikely.

Thunderstorms will also be possible Tuesday. There is a Marginal
Risk for severe storms across northern and western Oklahoma for
large hail and strong winds.

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, Jun 23, 5:31 PM CDT, 5 hours 11 minutes before
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Special weather statement, Jun 23, 5:35 PM CDT, 5 hours 7 minutes before
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Special weather statement, Jun 23, 5:47 PM CDT, 4 hours 55 minutes before
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Special weather statement, Jun 23, 5:58 PM CDT, 4 hours 44 minutes before
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Special weather statement, Jun 23, 6:24 PM CDT, 4 hours 18 minutes before
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Local storm report, Jun 23, 6:50 PM CDT, 3 hours 52 minutes before
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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 7:02 PM CDTAreal Flood AdvisoryOUNBryan, Marshall3 hr
Jun 23, 7:06 PM CDTAreal Flood WarningOUNCoal, Hughes, Pontotoc5 hr
Jun 23, 8:56 PM CDTSpecial Weather StatementOUNEllis34 min
Jun 23, 9:08 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills52 min
Jun 23, 9:22 PM CDTSpecial Weather StatementOUNEllis23 min
Jun 23, 9:30 PM CDTSpecial Weather StatementOUNWoodward30 min
Jun 23, 9:38 PM CDTSevere Thunderstorm WarningOUNBeckham, Ellis, Roger Mills52 min
Jun 23, 9:45 PM CDTSevere Thunderstorm WarningOUNHarper, Major, Woods, Woodward45 min
Jun 23, 9:53 PM CDTSpecial Weather StatementOUNDewey37 min
Jun 23, 10:23 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Roger Mills, Washita41 min
Jun 23, 10:27 PM CDTSpecial Weather StatementOUNAlfalfa, Dewey, Major33 min
Jun 23, 10:47 PM CDTSpecial Weather StatementOUNWashita28 min
Jun 23, 11:08 PM CDTSpecial Weather StatementOUNAlfalfa, Grant37 min
Jun 23, 11:34 PM CDTSpecial Weather StatementOUNGarfield26 min
Jun 23, 11:37 PM CDTSpecial Weather StatementOUNCanadian, Logan, Oklahoma23 min
Jun 23, 11:56 PM CDTSpecial Weather StatementOUNGrant34 min
Jun 24, 12:00 AM CDTSpecial Weather StatementOUNLogan, Oklahoma, Payne30 min
Jun 24, 12:10 AM CDTSpecial Weather StatementOUNLogan, Payne35 min
Jun 24, 12:24 AM CDTSpecial Weather StatementOUNOklahoma36 min
Jun 24, 12:27 AM CDTSpecial Weather StatementOUNNoble33 min
Jun 24, 12:43 AM CDTSpecial Weather StatementOUNPayne32 min
Jun 24, 12:48 AM CDTSpecial Weather StatementOUNNoble27 min
Jun 23, 7:28 PM CDTSpecial Weather StatementOUNArcher32 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2019Every 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.