Alert archive / Oklahoma / Special Weather Statements in 2021

Special Weather Statement, NWS Norman, OK

June 13, 2021McClain County, Oklahoma

NWS Norman, OK issued this special weather statement at Jun 13, 2021, 4:24 PM CDT for McClain 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 outline as issued.

The facts

Issued: Jun 13, 2021, 4:24 PM CDT (21:24 UTC)
Expired: Jun 13, 2021, 5:00 PM CDT
In force: 36 min
Issued by: NWS Norman, OK

County McClain County, OK

The radar

The Norman radar (KTLX), 46 km from the middle of the area, began a volume at 21:27 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

Fort Worth, TX (KFWD), launched 12:00Z, 9.4 hours before the alert went out and 243 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: 1837 J/kg
Mixed-layer CIN: -145 J/kg
Mixed-layer LCL: 1228 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 35 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 13, 1:48 PM CDT, 2 hours 36 minutes earlier.

Area forecast discussion, Jun 13, 1:48 PM CDT, 2 hours 36 minutes before

Area Forecast Discussion
National Weather Service Norman OK
148 PM CDT Sun Jun 13 2021

...New SHORT TERM, LONG TERM...

.UPDATE...
Issued at 1030 AM CDT Sun Jun 13 2021

Currently, an MCV associated with a mid-level shortwave embedded
within a larger scale ridge is moving through parts of western OK
and western north TX. These storms could produce some gusty winds
and some small hail. Cloud cover should linger across most of the
area, which will help to keep temperatures cooler than originally
anticipated. Updated PoPs across the aforementioned area to
reflect these showers.

Bunker

&&

.SHORT TERM...
(This evening through Monday)
Issued at 142 PM CDT Sun Jun 13 2021

A Heat Advisory is now in effect through tonight across portions
of central and southeast OK. Try to limit outdoor activity, if at
all possible and drink plenty of water if outdoor activities
cannot be avoided.

Additional storms are possible attendant to the ongoing MCV that
is traversing western OK currently. Later this afternoon, isolated
storms could form along a boundary that is currently situated NW
to SE from near Fairview, to OKC, and into south-central OK. As
heating continues this afternoon, steep mid-level lapse rates will
foster surface-based CAPE upwards of 3000-4000 J/kg. With weak
deep-layer shear, pulse convection will be the primary convective
mode for any storm development this afternoon and evening.

Bunker

&&

.LONG TERM...
(Monday night through next Saturday)
Issued at 142 PM CDT Sun Jun 13 2021

A broad, mid-level ridge will continue to build across the Desert
Southwest and vicinity throughout next week. This ridge will
attempt to break down by late next week into the weekend. Medium
range models are hinting at the potential for a shortwave trough
moving through the Southern Plains that could bring chances for
showers and storms next weekend.

With the aforementioned mid-level ridge positioned just upstream
of the Southern Plains, above normal temperatures are expected
throughout the area for most of the period. Dewpoints, however,
will feel a little drier relative to the last week as they are
forecasted to be in the mid 60s all week. Nevertheless, heat will
be the primary concern in the long term, so be weather aware!

Bunker

&&

.AVIATION...
(18Z TAFS)
Issued at 1236 PM CDT Sun Jun 13 2021

A few showers and thunderstorms are expected later today near LAW
and SPS. They can't be ruled out for OKC/OUN and amendments may be
necessary there after 21Z or so. In addition, MVFR cigs will
briefly impact OKC/OUN for the next couple of hours. Winds will
generally remain ESE around 10 to 15 kt for most terminals.

&&

.UPPER AIR...
Issued at 128 PM CDT Sat Jun 12 2021

No upper air flights are planned at this time.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  68  92  68  93 /  20   0   0   0
Hobart OK         70  95  69  96 /  20   0   0   0
Wichita Falls TX  71  94  70  95 /  30   0   0   0
Gage OK           67  94  69  95 /   0   0  10   0
Ponca City OK     64  93  67  94 /   0   0   0   0
Durant OK         71  93  70  94 /   0   0   0   0

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Heat Advisory until 1 AM CDT Monday for OKZ028>032-040>043-
     046>048-050>052.

TX...None.
&&

SHORT TERM...13
LONG TERM....13
AVIATION...03

Hazardous weather outlook, Jun 13, 3:26 PM CDT, 58 minutes before

Hazardous Weather Outlook...CORRECTED
National Weather Service Norman OK
326 PM CDT Sun Jun 13 2021

OKZ004>048-050>052-TXZ083>090-141645-
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-
326 PM CDT Sun Jun 13 2021

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 likely redevelop across portions of western and
southwestern Oklahoma later this afternoon, and then move into
north Texas this evening. A few severe thunderstorms will be
possible, with hail up to the size of quarters and wind gusts
up to 60 mph. Localized heavy rainfall may also result in minor
flooding.

.Heat...
Heat index values will climb to between 100 and 105
degrees across western north Texas and portions of southern
Oklahoma this afternoon.

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

.Thunderstorms...
Chances for thunderstorms return to parts of northern Oklahoma late
Friday.

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 13, 2:01 PM CDT, 2 hours 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
201 PM CDT SUN JUN 13 2021

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

1145 AM     TSTM WND DMG     MANGUM                  34.87N 99.50W
06/13/2021                   GREER              OK   PUBLIC

            LARGE TREES DOWNED. EST. 60 TO 65 MPH.

&&

RB

Local storm report, Jun 13, 2:53 PM CDT, 1 hour 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
253 PM CDT SUN JUN 13 2021

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

1212 PM     FLOOD            1 N MANGUM              34.89N 99.50W
06/13/2021                   GREER              OK   PUBLIC

            RIVER/CREEK OVERFLOWING.

&&

RCB

Local storm report, Jun 13, 2:54 PM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
254 PM CDT SUN JUN 13 2021

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

0253 PM     FLASH FLOOD      2 W MANGUM              34.88N 99.54W
06/13/2021                   GREER              OK   EMERGENCY MNGR

            REPORT OF HIGHWAY 9 JUST WEST OF MANGUM,
            COMPLETED FLOODED.

&&

RCB

Local storm report, Jun 13, 2:58 PM CDT, 1 hour 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
258 PM CDT SUN JUN 13 2021

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

0256 PM     TSTM WND DMG     MANGUM                  34.88N 99.50W
06/13/2021                   GREER              OK   EMERGENCY MNGR

            TELEPHONE LINES ARE INOPERABLE FROM STORMS
            EARLIER IN THE DAY.

&&

RCB

Special weather statement, Jun 13, 4:07 PM CDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
407 PM CDT Sun Jun 13 2021

OKZ027-028-132130-
Grady OK-McClain OK-
407 PM CDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Grady and
northwestern McClain Counties Until 430 PM CDT...

AT 405 PM CDT, a strong thunderstorm was located near Blanchard. This
storm was nearly stationary.

HAZARDS INCLUDE...
Hail up to one-half inch diameter...
Wind gusts to 50 MPH...

LAT...LON 3511 9777 3530 9776 3531 9760 3530 9758
      3529 9757 3527 9756 3524 9756 3523 9755
      3511 9755
TIME...MOT...LOC 2105Z 8DEG 1KT 3517 9766

MAD

Special weather statement, Jun 13, 4:24 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
424 PM CDT Sun Jun 13 2021

OKZ027-028-132200-
Grady OK-McClain OK-
424 PM CDT Sun Jun 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR northeastern Grady and
southwestern McClain Counties Until 500 PM CDT...

AT 423 PM CDT, strong thunderstorms were along a line extending from
near Bridge Creek to 5 miles southeast of Criner, nearly stationary.

HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...

LAT...LON 3485 9749 3486 9758 3523 9783 3532 9767
      3489 9737
TIME...MOT...LOC 2123Z 124DEG 4KT 3521 9772 3490 9751

MAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 2:59 AM CDT	Special Weather Statement	OUN	Roger Mills	46 min
Jun 13, 3:42 AM CDT	Special Weather Statement	OUN	Beckham, Custer, Greer, Harmon, Jackson, Roger Mills and 1 more	48 min
Jun 13, 5:33 AM CDT	Special Weather Statement	OUN	Caddo, Comanche	27 min
Jun 13, 7:16 AM CDT	Special Weather Statement	OUN	Cleveland	29 min
Jun 13, 10:33 AM CDT	Special Weather Statement	OUN	Greer	27 min
Jun 13, 10:45 AM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon	45 min
Jun 13, 11:33 AM CDT	Severe Thunderstorm Warning	OUN	Greer	42 min
Jun 13, 12:04 PM CDT	Areal Flood Advisory	OUN	Greer	3 hr
Jun 13, 12:14 PM CDT	Special Weather Statement	OUN	Greer	31 min
Jun 13, 12:21 PM CDT	Special Weather Statement	OUN	Greer	24 min
Jun 13, 12:42 PM CDT	Flash Flood Warning	OUN	Greer	4 hr
Jun 13, 12:45 PM CDT	Special Weather Statement	OUN	Greer	30 min
Jun 13, 1:11 PM CDT	Heat Advisory	OUN	Atoka, Bryan, Carter, Cleveland, Coal, Garvin and 9 more	9 hr
Jun 13, 1:18 PM CDT	Special Weather Statement	OUN	Greer	27 min
Jun 13, 1:21 PM CDT	Severe Thunderstorm Warning	OUN	Greer	39 min
Jun 13, 1:57 PM CDT	Severe Thunderstorm Warning	OUN	Greer	48 min
Jun 13, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson	65 min
Jun 13, 3:16 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	59 min
Jun 13, 4:03 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	42 min
Jun 13, 4:07 PM CDT	Special Weather Statement	OUN	McClain	23 min
Jun 13, 4:31 PM CDT	Special Weather Statement	OUN	Stephens	29 min
Jun 13, 4:44 PM CDT	Areal Flood Warning	OUN	Greer	2 hr
Jun 13, 4:46 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	44 min
Jun 13, 4:56 PM CDT	Special Weather Statement	OUN	Grady	34 min
Jun 13, 5:06 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	39 min
Jun 13, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	50 min
Jun 13, 5:34 PM CDT	River Flood Warning	OUN	Greer, Jackson	2 hr
Jun 13, 5:42 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	33 min
Jun 13, 5:54 PM CDT	Special Weather Statement	OUN	Garvin	36 min
Jun 13, 6:03 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, McClain, Stephens	42 min
Jun 13, 6:07 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	53 min
Jun 13, 6:11 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	36 min
Jun 13, 6:19 PM CDT	Special Weather Statement	OUN	Blaine	26 min
Jun 13, 6:25 PM CDT	Special Weather Statement	OUN	Canadian	35 min
Jun 13, 6:38 PM CDT	Areal Flood Advisory	OUN	Garvin, Grady, Stephens	3 hr
Jun 13, 6:39 PM CDT	Severe Thunderstorm Warning	OUN	Grady, Stephens	51 min
Jun 13, 6:43 PM CDT	Special Weather Statement	OUN	Murray	32 min
Jun 13, 6:46 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Major	44 min
Jun 13, 6:50 PM CDT	Special Weather Statement	OUN	Grady	25 min
Jun 13, 6:56 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady	49 min
Jun 13, 10:57 AM CDT	Special Weather Statement	OUN	Foard	33 min
Jun 13, 6:00 PM CDT	Severe Thunderstorm Warning	OUN	Wichita, Wilbarger	45 min
Jun 13, 6:41 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	49 min

Nearby

Special Weather Statements in Oklahoma, 2021 Every 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.