Alert archive / Oklahoma / Tornado Warnings in 2021

Tornado Warning 48, NWS Norman, OK

November 10, 2021Carter County, Garvin County, Stephens County, Oklahoma

NWS Norman, OK issued this tornado warning at Nov 10, 2021, 6:40 PM CST for Carter County, Garvin County, Stephens County, Oklahoma. It was in force for 27 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: Nov 10, 2021, 6:40 PM CST (00:40 UTC)
Expired: Nov 10, 2021, 7:07 PM CST
In force: 27 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Carter County, OK, Garvin County, OK, Stephens County, OK

The radar

The Norman radar (KTLX), 87 km from the middle of the area, began a volume at 00:39 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 watch it was issued in

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

Issued	Product	Office	Lasted
Nov 10, 3:26 PM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 0.7 hours before the alert went out and 72 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: 964 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 884 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 206 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.4

Open this sounding in Storm Lab

The text

As transmitted.

874 
WFUS54 KOUN 110040
TOROUN
OKC019-049-137-110130-
/O.NEW.KOUN.TO.W.0048.211111T0040Z-211111T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Norman OK
640 PM CST Wed Nov 10 2021

The National Weather Service in Norman has issued a

* Tornado Warning for...
  Southwestern Garvin County in southern Oklahoma...
  Northeastern Stephens County in southern Oklahoma...
  Northwestern Carter County in southern Oklahoma...

* Until 730 PM CST.
    
* At 639 PM CST, a severe thunderstorm capable of producing a tornado
  was located 7 miles east of Bray, moving east at 25 mph.

  HAZARD...Tornado and golf ball size hail.

  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...
  Elmore City, Foster, Tatums and Pernell. 

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3459 9779 3467 9774 3468 9733 3456 9737
      3444 9745
TIME...MOT...LOC 0039Z 275DEG 20KT 3461 9770 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

Mahale

4 follow-up statements

962 
WWUS54 KOUN 110045 RRA
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
645 PM CST Wed Nov 10 2021

OKC019-049-137-110130-
/O.CON.KOUN.TO.W.0048.000000T0000Z-211111T0130Z/
Garvin OK-Stephens OK-Carter OK-
645 PM CST Wed Nov 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CST FOR
SOUTHWESTERN GARVIN...NORTHEASTERN STEPHENS AND NORTHWESTERN CARTER
COUNTIES...
    
At 645 PM CST, a confirmed tornado was located 8 miles southeast of
Bray, moving east at 20 mph.

HAZARD...Damaging tornado and golf ball size hail.

SOURCE...Weather spotters 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...
Elmore City, Foster, Tatums and Pernell. 

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3459 9778 3465 9771 3462 9735 3456 9737
      3444 9745
TIME...MOT...LOC 0045Z 278DEG 19KT 3459 9769 

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

$$

Mahale

652 
WWUS54 KOUN 110052
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
652 PM CST Wed Nov 10 2021

OKC019-049-137-110130-
/O.CON.KOUN.TO.W.0048.000000T0000Z-211111T0130Z/
Garvin OK-Stephens OK-Carter OK-
652 PM CST Wed Nov 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CST FOR
SOUTHWESTERN GARVIN...NORTHEASTERN STEPHENS AND NORTHWESTERN CARTER
COUNTIES...
    
At 652 PM CST, a confirmed tornado was located 8 miles north of
Velma, moving east at 20 mph.

HAZARD...Damaging tornado and golf ball size hail.

SOURCE...Weather spotters 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...
Tatums and Pernell. 

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3457 9773 3462 9767 3459 9736 3456 9737
      3444 9745
TIME...MOT...LOC 0052Z 278DEG 18KT 3457 9768 

TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN

$$

Mahale

291 
WWUS54 KOUN 110058
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
658 PM CST Wed Nov 10 2021

OKC019-049-137-110130-
/O.CON.KOUN.TO.W.0048.000000T0000Z-211111T0130Z/
Garvin OK-Stephens OK-Carter OK-
658 PM CST Wed Nov 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CST FOR
SOUTHWESTERN GARVIN...EAST CENTRAL STEPHENS AND NORTHWESTERN CARTER
COUNTIES...
    
At 658 PM CST, a severe thunderstorm capable of producing a tornado
was located 7 miles north of Velma, moving east at 25 mph.

HAZARD...Tornado and ping pong ball size hail.

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...
Tatums and Pernell. 

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3455 9769 3461 9761 3459 9736 3456 9737
      3444 9745
TIME...MOT...LOC 0058Z 278DEG 20KT 3456 9762 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.50 IN

$$

Mahale

384 
WWUS54 KOUN 110107
SVSOUN

Severe Weather Statement
National Weather Service Norman OK
707 PM CST Wed Nov 10 2021

OKC019-049-137-110117-
/O.CAN.KOUN.TO.W.0048.000000T0000Z-211111T0130Z/
Garvin OK-Stephens OK-Carter OK-
707 PM CST Wed Nov 10 2021

...THE TORNADO WARNING FOR SOUTHWESTERN GARVIN...EAST CENTRAL
STEPHENS AND NORTHWESTERN CARTER COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

LAT...LON 3455 9769 3461 9761 3459 9736 3456 9737
      3444 9745
TIME...MOT...LOC 0106Z 275DEG 20KT 3456 9756 

$$

Mahale

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 10, 6:15 PM CST	Special Weather Statement	OUN	Garvin	30 min
Nov 10, 6:18 PM CST	Severe Thunderstorm Warning Considerable damage threat	OUN	Payne	27 min
Nov 10, 6:20 PM CST	Severe Thunderstorm Warning	OUN	Carter, Garvin, Stephens	40 min
Nov 10, 6:24 PM CST	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Payne, Pottawatomie	51 min
Nov 10, 6:36 PM CST	Special Weather Statement	OUN	Cleveland, McClain	24 min
Nov 10, 6:42 PM CST	Severe Thunderstorm Warning	OUN	Jefferson	21 min
Nov 10, 7:10 PM CST	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie, Seminole	50 min
Nov 10, 7:11 PM CST	Special Weather Statement	OUN	Carter	34 min
Nov 10, 7:13 PM CST	Special Weather Statement	OUN	Garvin	32 min
Nov 10, 7:17 PM CST	Special Weather Statement	OUN	Bryan	13 min
Nov 10, 7:18 PM CST	Special Weather Statement	OUN	Pontotoc	27 min
Nov 10, 7:31 PM CST	Special Weather Statement	OUN	Bryan	29 min
Nov 10, 7:33 PM CST	Special Weather Statement	OUN	Bryan	27 min
Nov 10, 7:41 PM CST	Severe Thunderstorm Warning	OUN	Bryan	19 min
Nov 10, 7:46 PM CST	Tornado Warning	OUN	Carter, Murray	27 min
Nov 10, 8:16 PM CST	Special Weather Statement	OUN	Carter	29 min
Nov 10, 8:28 PM CST	Special Weather Statement	OUN	Coal	32 min
Nov 10, 8:50 PM CST	Special Weather Statement	OUN	Atoka	25 min
Nov 10, 8:56 PM CST	Special Weather Statement	OUN	Atoka	34 min
Nov 10, 9:13 PM CST	Special Weather Statement	OUN	Atoka	32 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.