Alert archive / Oklahoma / Tornado Warnings in 2021

Tornado Warning 27, NWS Norman, OK

October 10, 2021Lincoln County, Oklahoma County, Oklahoma

NWS Norman, OK issued this tornado warning at Oct 10, 2021, 8:22 PM CDT for Lincoln County, Oklahoma County, Oklahoma. It was in force for 23 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Oct 10, 2021, 8:22 PM CDT (01:22 UTC)
Expired: Oct 10, 2021, 8:45 PM CDT
In force: 23 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Lincoln County, OK, Oklahoma County, OK

The radar

The Norman radar (KTLX), 35 km from the middle of the area, began a volume at 01:25 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.

What was reported inside it

Time	Report	Where	Remark
Oct 10, 8:23 PM CDT	TORNADO	4 N Harrah, OK	UPDATED. AN EF0 TORNADO TOUCHED DOWN NEAR NE 63RD STREET AND DOBBS ROAD AT 820 PM AND MOVED NORTHEAST FOR THREE MILES CROSSING INTO LINCOLN COUNTY NEAR BRITTON ROAD BEFORE DISSIPATING.
Oct 10, 8:23 PM CDT	TORNADO	4 N Harrah, OK	TREE DAMAGE NEAR HARRAH ROAD AND WILSHIRE ROAD. TDS OBSERVED ON RADAR.
Oct 10, 8:41 PM CDT	TORNADO	1 W Warwick, OK	TREE DAMAGE REPORTED NEAR THE TURNER TURNPIKE NEAR WARWICK. TDS OBSERVED ON RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 10, 3:22 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.4 hours before the alert went out and 51 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: 1436 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 8.8

Open this sounding in Storm Lab

The text

As transmitted.

984 
WFUS54 KOUN 110122
TOROUN
OKC081-109-110145-
/O.NEW.KOUN.TO.W.0027.211011T0122Z-211011T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
822 PM CDT Sun Oct 10 2021

The National Weather Service in Norman has issued a

* Tornado Warning for...
  Southwestern Lincoln County in central Oklahoma...
  East central Oklahoma County in central Oklahoma...

* Until 845 PM CDT.
    
* At 822 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 4 miles north of Harrah, moving northeast at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Chandler, Wellston and Warwick. 

This includes Interstate 44 between mile markers 156 and 166.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter, safe room or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3550 9717 3556 9723 3577 9695 3563 9681
TIME...MOT...LOC 0122Z 237DEG 37KT 3555 9717 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

BRB

2 follow-up statements

474 
WWUS54 KOUN 110124
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
824 PM CDT Sun Oct 10 2021

OKC081-109-110145-
/O.CON.KOUN.TO.W.0027.000000T0000Z-211011T0145Z/
Lincoln OK-Oklahoma OK-
824 PM CDT Sun Oct 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN LINCOLN AND EAST CENTRAL OKLAHOMA COUNTIES...
        
At 824 PM CDT, a confirmed tornado was located 6 miles northeast of
Harrah, moving northeast at 45 mph.

HAZARD...Damaging tornado.

SOURCE...Radar confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Chandler, Wellston and Warwick. 

This includes Interstate 44 between mile markers 156 and 166.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
storm shelter, safe room, or an interior room on the lowest floor of
a sturdy building. Avoid windows. If you are outdoors, in a mobile
home, or in a vehicle, move to the closest substantial shelter and
protect yourself from flying debris.

&&

LAT...LON 3551 9715 3557 9721 3577 9695 3563 9681
TIME...MOT...LOC 0124Z 237DEG 37KT 3557 9714 

TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN

$$

BRB

928 
WWUS54 KOUN 110132
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
832 PM CDT Sun Oct 10 2021

OKC109-110141-
/O.CAN.KOUN.TO.W.0027.000000T0000Z-211011T0145Z/
Oklahoma OK-
832 PM CDT Sun Oct 10 2021

...THE TORNADO WARNING FOR EAST CENTRAL OKLAHOMA COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3554 9708 3560 9714 3562 9714 3563 9713
      3577 9695 3564 9682
TIME...MOT...LOC 0131Z 230DEG 35KT 3562 9708 

$$

OKC081-110145-
/O.CON.KOUN.TO.W.0027.000000T0000Z-211011T0145Z/
Lincoln OK-
832 PM CDT Sun Oct 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHWESTERN LINCOLN COUNTY...
    
At 831 PM CDT, a severe thunderstorm capable of producing a tornado
was located 4 miles south of Wellston, moving northeast at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Chandler, Wellston and Warwick. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter, safe room, or an interior
room on the lowest floor of a sturdy building. Avoid windows. If you
are outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3554 9708 3560 9714 3562 9714 3563 9713
      3577 9695 3564 9682
TIME...MOT...LOC 0131Z 230DEG 35KT 3562 9708 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN

$$

BRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	43 min
Oct 10, 7:05 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	40 min
Oct 10, 7:18 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan, Noble, Payne	42 min
Oct 10, 7:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	51 min
Oct 10, 7:25 PM CDT	Flash Flood Warning	OUN	Caddo, Canadian, Cleveland, Grady, McClain, Oklahoma	107 min
Oct 10, 7:33 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Cotton, Garvin, Jefferson, Stephens	42 min
Oct 10, 7:43 PM CDT	Tornado Warning	OUN	Cleveland, McClain	47 min
Oct 10, 7:47 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	28 min
Oct 10, 8:14 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Murray, Stephens	46 min
Oct 10, 8:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, Lincoln, McClain, Oklahoma, Pottawatomie, Seminole	59 min
Oct 10, 8:17 PM CDT	Areal Flood Advisory	OUN	Kay, Noble	3 hr
Oct 10, 8:43 PM CDT	Tornado Warning	OUN	Lincoln	25 min
Oct 10, 8:53 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Carter, Johnston, Love, Marshall	52 min
Oct 10, 8:56 PM CDT	Tornado Warning Tornado observed	OUN	Lincoln, Pottawatomie, Seminole	34 min
Oct 10, 8:59 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Coal, Garvin, Johnston, Murray, Pontotoc and 1 more	46 min
Oct 10, 9:03 PM CDT	Areal Flood Advisory	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie, Seminole	3 hr
Oct 10, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Lincoln, Payne, Pontotoc, Pottawatomie, Seminole	43 min
Oct 10, 9:43 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Coal, Johnston, Marshall	47 min
Oct 10, 9:45 PM CDT	Areal Flood Advisory	OUN	Cleveland, Lincoln, Logan, McClain, Oklahoma, Pottawatomie	3 hr
Oct 10, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc, Seminole	45 min
Oct 10, 10:20 PM CDT	Tornado Warning	OUN	Hughes	25 min
Oct 10, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Coal	45 min
Oct 10, 11:02 PM CDT	Special Weather Statement	OUN	Caddo	28 min
Oct 10, 11:25 PM CDT	Special Weather Statement	OUN	Grady	35 min
Oct 11, 12:14 AM CDT	Special Weather Statement	OUN	Cleveland, Logan, Oklahoma	31 min

Nearby

Tornado Warnings in Oklahoma, 2021 Every tornado warning in 2021 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.