Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 730, NWS Norman, OK

July 8, 2019Dewey County, Major County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 8, 2019, 7:56 PM CDT for Dewey County, Major County, Oklahoma. It was in force for 49 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
Jul 8, 2019, 7:56 PM CDT (00:56 UTC)
Expired
Jul 8, 2019, 8:45 PM CDT
In force
49 min
Issued by
NWS Norman, OK
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Dewey County, OK, Major County, OK

The radar

The Vance AFB radar (KVNX), 87 km from the middle of the area, began a volume at 00:55 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

Dodge City, (KDDC), launched 00:00Z, 0.9 hours before the alert went out and 206 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, Dodge City, at 00:00Z on 2019-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1202 joules per kilogram.LCLLFCEL10008507005003002001001 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, Dodge City, at 00:00Z on 2019-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.193958Sfc1 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
1202 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1550 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.1
Supercell composite
3.9

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 Jul 8, 6:36 PM CDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 8, 6:36 PM CDT, 1 hour 20 minutes before
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Hazardous weather outlook, Jul 8, 12:10 PM CDT, 7 hours 46 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1210 PM CDT Mon Jul 8 2019

OKZ004>048-050>052-TXZ083>090-091715-
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-
1210 PM CDT Mon Jul 8 2019

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

.DAY ONE...Through Tonight...

.Thunderstorms...
Isolated to scattered thunderstorms are expected through the
afternoon and evening across most of the area. The greatest
concentration of storms is expected generally east of a line from
Enid to Shawnee to Duncan. Another area of greater storm covered
may be across western Oklahoma and western north Texas later this
evening as thunderstorms develop in the Texas panhandle and west
Texas this afternoon and move east into the area.

Any of these storms could produce strong wind gusts, lightning,
heavy rainfall, localized flooding. A few isolated severe wind
gusts are possible, but widespread severe storms are not expected.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday...

.Thunderstorms...
There is the potential for thunderstorms in north central Oklahoma
on Tuesday evening and again across more areas on Wednesday
afternoon and Wednesday night.

.Heat...
Warmer temperatures are expected this week. The warmest days will
be on Tuesday and Wednesday where the highest afternoon heat
index values will range between 95 and 110.

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, Jul 8, 4:32 PM CDT, 3 hours 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
432 PM CDT Mon Jul 8 2019

OKZ025-082215-
Oklahoma OK-
432 PM CDT Mon Jul 8 2019

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Oklahoma County
Until 515 PM CDT...

AT 431 PM CDT, a strong thunderstorm was located over northeastern
Oklahoma City, moving northeast at 15 MPH.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts over 50 MPH...
Minor flooding in areas of poor drainage...
Heavy rain can lead to reduced visibility...
Frequent cloud to ground lightning...

Locations impacted include...
Northeastern Oklahoma City, southeastern Edmond, Midwest City,
Choctaw, Harrah, Spencer, Jones, Nicoma Park, Luther and Arcadia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3546 9730 3550 9739 3570 9732 3565 9714
      3551 9714
TIME...MOT...LOC 2131Z 218DEG 12KT 3552 9732

03
Local storm report, Jul 8, 5:20 PM CDT, 2 hours 36 minutes before
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Special weather statement, Jul 8, 5:34 PM CDT, 2 hours 22 minutes before
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Special weather statement, Jul 8, 5:39 PM CDT, 2 hours 17 minutes before
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Local storm report, Jul 8, 6:11 PM CDT, 1 hour 45 minutes before
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Special weather statement, Jul 8, 6:29 PM CDT, 1 hour 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 7:00 PM CDTSpecial Weather StatementOUNKingfisher45 min
Jul 8, 7:01 PM CDTSpecial Weather StatementOUNDewey44 min
Jul 8, 7:35 PM CDTSpecial Weather StatementOUNDewey40 min
Jul 8, 8:15 PM CDTSpecial Weather StatementOUNGarfield30 min
Jul 8, 8:26 PM CDTSpecial Weather StatementOUNMajor64 min
Jul 8, 8:37 PM CDTSpecial Weather StatementOUNWoods53 min
Jul 9, 2:58 AM CDTHeat AdvisoryOUNAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 32 more41 hr

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.