Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

June 30, 2021Garfield County, Oklahoma

NWS Norman, OK issued this special weather statement at Jun 30, 2021, 4:53 PM CDT for Garfield County, Oklahoma. It was in force for 37 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
Jun 30, 2021, 4:53 PM CDT (21:53 UTC)
Expired
Jun 30, 2021, 5:30 PM CDT
In force
37 min
Issued by
NWS Norman, OK

County Garfield County, OK

The radar

The Vance AFB radar (KVNX), 75 km from the middle of the area, began a volume at 21:53 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 12:00Z, 9.9 hours before the alert went out and 265 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 12:00Z on 2021-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 59 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 12:00Z on 2021-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
59 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
549 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
62 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 30, 2:14 PM CDT, 2 hours 39 minutes earlier.

Area forecast discussion, Jun 30, 2:14 PM CDT, 2 hours 39 minutes before
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Hazardous weather outlook, Jun 30, 11:39 AM CDT, 5 hours 14 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1139 AM CDT Wed Jun 30 2021

OKZ004>048-050>052-TXZ083>090-011645-
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-
1139 AM CDT Wed Jun 30 2021

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

.DAY ONE...This Afternoon and Tonight...

.Thunderstorms...
Isolated to widely scattered showers and thunderstorms will remain
possible across portions of the area this afternoon and then
become more numerous tonight, especially in northern Oklahoma. No
severe storms are expected, but heavy rain associated with storms
will increase the threat of flooding.

.Heavy Rain...
Although brief in nature, heavy rain, especially in areas where
the ground is saturated, could lead to flooding in some locations
through tonight.

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

.Thunderstorms...
Thunderstorm chances will increase on Thursday and Thursday night
as a cold front moves southward across the area. Storm chances
then gradually shift southward into southern Oklahoma and western
north Texas by Friday into the weekend.

.Heavy Rain...
Because of saturated ground across much of the area, a risk for
flooding will continue through Friday.

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, Jun 30, 4:48 PM CDT, 5 minutes before
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Local storm report, Jun 30, 4:53 PM CDT, 0 minutes before
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Special weather statement, Jun 30, 4:53 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 8:44 PM CDTAreal Flood AdvisoryOUNJefferson, Stephens3 hr
Jun 29, 9:52 PM CDTAreal Flood AdvisoryOUNCleveland, McClain, Oklahoma3 hr
Jun 30, 8:26 AM CDTRiver Flood WarningOUNKingfisher, Logan48 hr
Jun 30, 8:29 AM CDTRiver Flood WarningOUNPayne3 days
Jun 30, 9:43 AM CDTRiver Flood AdvisoryOUNLove29 hr
Jun 30, 1:14 PM CDTFlood WatchOUNAlfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 25 more47 hr
Jun 30, 4:48 PM CDTSpecial Weather StatementOUNKay27 min
Jun 30, 5:24 PM CDTSpecial Weather StatementOUNKay36 min

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.