Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

August 8, 2021Dewey County, Oklahoma

NWS Norman, OK issued this special weather statement at Aug 8, 2021, 6:32 AM CDT for Dewey County, Oklahoma. It was in force for 28 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
Aug 8, 2021, 6:32 AM CDT (11:32 UTC)
Expired
Aug 8, 2021, 7:00 AM CDT
In force
28 min
Issued by
NWS Norman, OK
Hail
0.88 in
Wind
40

County Dewey County, OK

The radar

The Vance AFB radar (KVNX), 135 km from the middle of the area, began a volume at 11:36 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, 11.5 hours before the alert went out and 214 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 2021-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1651 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 2021-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 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
1651 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
2554 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
245 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.2

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 Aug 8, 6:20 AM CDT, 12 minutes earlier.

Area forecast discussion, Aug 8, 6:20 AM CDT, 12 minutes before
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Hazardous weather outlook, Aug 7, 11:54 PM CDT, 6 hours 38 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1154 PM CDT Sat Aug 7 2021

OKZ004>048-050>052-TXZ083>090-081000-
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-
1154 PM CDT Sat Aug 7 2021

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

.DAY ONE...Rest of Tonight...

.Thunderstorms...
Scattered thunderstorms will be possible across northern, western,
and central Oklahoma. Although a few locations could see heavy
rain and gusty winds, no organized severe weather is expected.

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

.Thunderstorms...
A few non-severe thunderstorms are possible Sunday morning over
northern and central Oklahoma. Additional storms may develop Sunday
afternoon over far north central Oklahoma, with a few marginally
severe storms possible.

Storm chances return to northern Oklahoma Tuesday night and
Wednesday, with storm chances spreading south over the rest of
the region Thursday and Friday. A few strong storms will be
possible, but organized severe weather chances appear low at this
time.

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, Aug 8, 3:12 AM CDT, 3 hours 20 minutes before
Special Weather Statement
National Weather Service Norman OK
312 AM CDT Sun Aug 8 2021

OKZ011-012-018-080845-
Major OK-Garfield OK-Kingfisher OK-
312 AM CDT Sun Aug 8 2021

...A strong thunderstorm will impact portions of northern Kingfisher,
southwestern Garfield and southeastern Major Counties through 345 AM
CDT...

At 311 AM CDT, Doppler radar was tracking a strong thunderstorm 6
miles south of Drummond, moving east at 25 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Hennessey, Waukomis, Drummond, Ames, Bison, Vance Air Force Base and
Lacey.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3612 9819 3632 9818 3634 9769 3605 9773
TIME...MOT...LOC 0811Z 274DEG 22KT 3621 9807

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

MAD
Local storm report, Aug 8, 3:29 AM CDT, 3 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
329 AM CDT SUN AUG 8 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0247 AM     HAIL             ISABELLA                36.23N 98.34W
08/08/2021  U1.00 INCH       MAJOR              OK   PUBLIC

            MPING.

0320 AM     HAIL             6 NNE LACEY             36.20N 98.03W
08/08/2021  E0.88 INCH       GARFIELD           OK   TRAINED SPOTTER

&&
Special weather statement, Aug 8, 4:59 AM CDT, 1 hour 33 minutes before
Special Weather Statement
National Weather Service Norman OK
459 AM CDT Sun Aug 8 2021

OKZ020-026-081030-
Payne OK-Lincoln OK-
459 AM CDT Sun Aug 8 2021

...A strong thunderstorm will impact portions of northeastern Lincoln
and southeastern Payne Counties through 530 AM CDT...

At 458 AM CDT, Doppler radar was tracking a strong thunderstorm near
Ripley, moving east at 30 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Stillwater, Cushing, Perkins, Yale, Ripley and Ingalls.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3596 9706 3613 9705 3616 9662 3590 9662
TIME...MOT...LOC 0958Z 275DEG 24KT 3605 9692

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

MAD
Special weather statement, Aug 8, 5:18 AM CDT, 1 hour 14 minutes before
Special Weather Statement
National Weather Service Norman OK
518 AM CDT Sun Aug 8 2021

OKZ037-038-044-081045-
Tillman OK-Cotton OK-Comanche OK-
518 AM CDT Sun Aug 8 2021

...Strong thunderstorms will impact portions of southwestern
Comanche, northwestern Cotton and east central Tillman Counties
through 545 AM CDT...

At 518 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles west of Chattanooga to near Loveland.
Movement was east at 15 mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Northwestern Lawton, Chattanooga, Faxon and Loveland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3465 9844 3428 9853 3425 9885 3456 9881
TIME...MOT...LOC 1018Z 254DEG 13KT 3445 9876 3431 9879

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

11
Special weather statement, Aug 8, 5:44 AM CDT, 48 minutes before
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Special weather statement, Aug 8, 6:32 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 8:42 PM CDTSpecial Weather StatementOUNHarper33 min
Aug 7, 10:05 PM CDTSpecial Weather StatementOUNWoodward25 min
Aug 7, 10:22 PM CDTSpecial Weather StatementOUNEllis38 min
Aug 7, 10:59 PM CDTSpecial Weather StatementOUNEllis31 min
Aug 7, 11:29 PM CDTSpecial Weather StatementOUNWoodward31 min
Aug 7, 11:58 PM CDTSpecial Weather StatementOUNMajor32 min
Aug 8, 12:44 AM CDTSpecial Weather StatementOUNDewey31 min
Aug 8, 12:47 AM CDTSpecial Weather StatementOUNAlfalfa28 min
Aug 8, 1:01 AM CDTSpecial Weather StatementOUNRoger Mills29 min
Aug 8, 2:52 AM CDTSpecial Weather StatementOUNKingfisher23 min
Aug 8, 3:12 AM CDTSpecial Weather StatementOUNGarfield33 min
Aug 8, 4:59 AM CDTSpecial Weather StatementOUNPayne31 min
Aug 8, 5:18 AM CDTSpecial Weather StatementOUNTillman27 min
Aug 8, 5:44 AM CDTSpecial Weather StatementOUNDewey31 min
Aug 8, 7:01 AM CDTSpecial Weather StatementOUNCuster29 min
Aug 8, 7:34 AM CDTSpecial Weather StatementOUNCaddo26 min
Aug 8, 7:47 AM CDTSevere Thunderstorm WarningOUNCaddo, Canadian28 min
Aug 8, 8:12 AM CDTSpecial Weather StatementOUNCaddo48 min
Aug 8, 1:37 PM CDTHeat AdvisoryOUNAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 29 more30 hr

Nearby

Special Weather Statements in Oklahoma, 2021Every special weather statement in 2021

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.