Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 320, NWS Norman, OK

June 13, 2021Caddo County, Canadian County, Grady County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 13, 2021, 5:06 PM CDT for Caddo County, Canadian County, Grady County, Oklahoma. It was in force for 39 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, 5:06 PM CDT (22:06 UTC)
Expired: Jun 13, 2021, 5:45 PM CDT
In force: 39 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Caddo County, OK, Canadian County, OK, Grady County, OK

The radar

The Norman radar (KTLX), 65 km from the middle of the area, began a volume at 22:07 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, 10.1 hours before the alert went out and 289 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.

642 
WUUS54 KOUN 132206
SVROUN
OKC015-017-051-132245-
/O.NEW.KOUN.SV.W.0320.210613T2206Z-210613T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
506 PM CDT Sun Jun 13 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Northern Grady County in central Oklahoma...
  East central Caddo County in southwestern Oklahoma...
  Southwestern Canadian County in central Oklahoma...

* Until 545 PM CDT.

* At 506 PM CDT, a severe thunderstorm was located near Minco, moving
  southwest at 5 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  El Reno, Chickasha, Tuttle, Union City, Minco, Amber, Pocasset,
  Cogar and Cedar Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3553 9798 3523 9775 3506 9798 3547 9826
TIME...MOT...LOC 2206Z 066DEG 4KT 3534 9797 

HAIL...1.00IN
WIND...60MPH
 
$$

MAD

1 follow-up statement

602 
WWUS54 KOUN 132214
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
514 PM CDT Sun Jun 13 2021

OKC015-017-051-132245-
/O.CON.KOUN.SV.W.0320.000000T0000Z-210613T2245Z/
Grady OK-Caddo OK-Canadian OK-
514 PM CDT Sun Jun 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR NORTHERN GRADY...EAST CENTRAL CADDO AND SOUTHWESTERN CANADIAN
COUNTIES...

At 513 PM CDT, a severe thunderstorm was located near Minco, and is
nearly stationary.

HAZARD...Golf ball size hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

Locations impacted include...
El Reno, Chickasha, Tuttle, Union City, Minco, Amber, Pocasset, Cogar
and Cedar Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3553 9798 3523 9775 3506 9798 3547 9826
TIME...MOT...LOC 2213Z 066DEG 4KT 3534 9798 

HAIL...1.75IN
WIND...70MPH
 
$$

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, 4:24 PM CDT	Special Weather Statement	OUN	McClain	36 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, 5:25 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

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning 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.