Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 403, NWS Norman, OK

July 16, 2021Kay County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jul 16, 2021, 11:47 PM CDT for Kay County, Oklahoma. It was in force for 26 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: Jul 16, 2021, 11:47 PM CDT (04:47 UTC)
Expired: Jul 17, 2021, 12:13 AM CDT
In force: 26 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Kay County, OK

The radar

The Wichita radar (KICT), 110 km from the middle of the area, began a volume at 04:47 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

Topeka, KS (KTOP), launched 00:00Z, 4.8 hours before the alert went out and 271 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: 758 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

715 
WUUS54 KOUN 170447
SVROUN
OKC071-170530-
/O.NEW.KOUN.SV.W.0403.210717T0447Z-210717T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
1147 PM CDT Fri Jul 16 2021

The National Weather Service in Norman has issued a

* Severe Thunderstorm Warning for...
  Northeastern Kay County in northern Oklahoma...

* Until 1230 AM CDT.

* At 1147 PM CDT, a severe thunderstorm was located near Kildare,
  moving east at 10 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...
  Ponca City, Newkirk, Kaw City, Kildare and Kaw Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3691 9677 3677 9681 3677 9682 3675 9682
      3674 9683 3674 9685 3675 9687 3675 9689
      3672 9692 3669 9693 3668 9695 3675 9711
      3692 9707
TIME...MOT...LOC 0447Z 286DEG 8KT 3682 9700 

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

Maxwell

2 follow-up statements

353 
WWUS54 KOUN 170503
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
1203 AM CDT Sat Jul 17 2021

OKC071-170530-
/O.CON.KOUN.SV.W.0403.000000T0000Z-210717T0530Z/
Kay OK-
1203 AM CDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR NORTHEASTERN KAY COUNTY...

At 1202 AM CDT, a severe thunderstorm was located near Kildare,
moving east 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...
Ponca City, Newkirk, Kaw City, Kildare and Kaw Lake. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3691 9677 3677 9681 3677 9682 3675 9682
      3674 9683 3674 9685 3675 9687 3675 9689
      3672 9692 3669 9693 3668 9695 3675 9711
      3692 9707
TIME...MOT...LOC 0502Z 291DEG 6KT 3683 9701 

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

Maxwell

112 
WWUS54 KOUN 170513
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
1213 AM CDT Sat Jul 17 2021

OKC071-170523-
/O.CAN.KOUN.SV.W.0403.000000T0000Z-210717T0530Z/
Kay OK-
1213 AM CDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KAY COUNTY IS
CANCELLED...
                 
The storm which prompted the warning has weakened below severe
limits, therefore the warning has been cancelled.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3691 9677 3677 9681 3677 9682 3675 9682
      3674 9683 3674 9685 3675 9687 3675 9689
      3672 9692 3669 9693 3668 9695 3675 9711
      3692 9707
TIME...MOT...LOC 0512Z 286DEG 8KT 3682 9698 

$$

Maxwell

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:21 PM CDT	Special Weather Statement	OUN	Johnston	24 min
Jul 16, 8:25 PM CDT	Special Weather Statement	OUN	Kay	35 min
Jul 16, 9:10 PM CDT	Areal Flood Advisory	OUN	Grant, Kay	3 hr
Jul 16, 9:31 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay	59 min
Jul 16, 10:08 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant	52 min
Jul 16, 10:51 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant, Major	39 min
Jul 16, 11:23 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Garfield, Grant	3 hr
Jul 16, 11:41 PM CDT	Special Weather Statement	OUN	Kay	34 min
Jul 17, 12:09 AM CDT	Areal Flood Advisory	OUN	Kay	3 hr
Jul 17, 12:25 AM CDT	Special Weather Statement	OUN	Kay	35 min
Jul 17, 11:29 AM CDT	Special Weather Statement	OUN	Alfalfa	46 min
Jul 17, 12:07 PM CDT	Special Weather Statement	OUN	Major	38 min
Jul 17, 12:18 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major, Woods	27 min
Jul 17, 12:24 PM CDT	Areal Flood Advisory	OUN	Alfalfa, Major, Woods	3 hr
Jul 17, 12:44 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher, Major	46 min
Jul 17, 1:04 PM CDT	Special Weather Statement	OUN	Dewey	26 min
Jul 17, 1:08 PM CDT	Special Weather Statement	OUN	Roger Mills	52 min
Jul 17, 1:23 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	17 min
Jul 17, 1:32 PM CDT	Areal Flood Advisory	OUN	Blaine, Garfield, Kingfisher, Logan, Major	3 hr
Jul 17, 1:36 PM CDT	Areal Flood Advisory	OUN	Blaine, Dewey	3 hr
Jul 17, 1:43 PM CDT	Special Weather Statement	OUN	Logan	47 min
Jul 17, 1:47 PM CDT	Special Weather Statement	OUN	Kingfisher	43 min
Jul 17, 1:58 PM CDT	Special Weather Statement	OUN	Blaine	32 min
Jul 17, 2:10 PM CDT	Special Weather Statement	OUN	Ellis	35 min
Jul 17, 2:21 PM CDT	Special Weather Statement	OUN	Canadian, Logan	24 min
Jul 17, 2:24 PM CDT	Areal Flood Advisory	OUN	Kingfisher, Logan	3 hr
Jul 17, 2:39 PM CDT	Special Weather Statement	OUN	Canadian	66 min
Jul 17, 2:42 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	36 min
Jul 17, 2:44 PM CDT	Areal Flood Advisory	OUN	Dewey, Ellis, Roger Mills, Woodward	3 hr
Jul 17, 2:48 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher	42 min
Jul 17, 2:57 PM CDT	Areal Flood Advisory	OUN	Blaine, Caddo	3 hr
Jul 17, 3:06 PM CDT	Areal Flood Advisory	OUN	Canadian, Kingfisher	3 hr
Jul 17, 3:12 PM CDT	Special Weather Statement	OUN	Logan	48 min
Jul 17, 3:21 PM CDT	Special Weather Statement	OUN	Caddo	54 min
Jul 17, 3:32 PM CDT	Special Weather Statement	OUN	Oklahoma	58 min
Jul 17, 3:33 PM CDT	Special Weather Statement	OUN	Canadian	27 min
Jul 17, 3:38 PM CDT	Areal Flood Advisory	OUN	Oklahoma	112 min
Jul 17, 4:01 PM CDT	Special Weather Statement	OUN	Caddo	44 min
Jul 17, 4:03 PM CDT	Special Weather Statement	OUN	Grady	42 min
Jul 17, 4:30 PM CDT	Special Weather Statement	OUN	Greer	45 min
Jul 17, 4:34 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Grady, Kiowa	41 min
Jul 17, 4:43 PM CDT	Special Weather Statement	OUN	Cleveland	62 min
Jul 17, 4:53 PM CDT	Special Weather Statement	OUN	Greer	67 min
Jul 17, 5:06 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	37 min
Jul 17, 5:41 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	49 min
Jul 17, 6:50 PM CDT	Special Weather Statement	OUN	Cotton	25 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.