Alert archive / Oklahoma / Tornado Warnings in 2021

Tornado Warning 38, NWS Tulsa, OK

October 11, 2021Delaware County, Oklahoma; Benton County, Arkansas

NWS Tulsa, OK issued this tornado warning at Oct 11, 2021, 12:09 AM CDT for Delaware County, Oklahoma; Benton County, Arkansas. It was in force for 39 min. 1 report 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 11, 2021, 12:09 AM CDT (05:09 UTC)
Expired: Oct 11, 2021, 12:48 AM CDT
In force: 39 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Benton County, AR, Delaware County, OK

The radar

The Tulsa radar (KINX), 88 km from the middle of the area, began a volume at 05:09 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 11, 12:11 AM CDT	TORNADO	7 Ssw Jay, OK	RADAR CONFIRMED TORNADO SSW OF JAY.

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, 9:24 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 5.2 hours before the alert went out and 90 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2067 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

333 
WFUS54 KTSA 110509
TORTSA
ARC007-OKC041-110600-
/O.NEW.KTSA.TO.W.0038.211011T0509Z-211011T0600Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
1209 AM CDT Mon Oct 11 2021

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Northwestern Benton County in northwestern Arkansas...
  Central Delaware County in northeastern Oklahoma...

* Until 100 AM CDT.
    
* At 1209 AM CDT, a severe thunderstorm capable of producing a
  tornado was located 7 miles north of Kansas, 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 in or near the path include...
  Jay...                            Gravette...
  Colcord...                        Kansas...
  Maysville...                      Lake Eucha State Park...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement 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 3650 9462 3650 9436 3620 9479 3632 9496
      3667 9463 3667 9462
TIME...MOT...LOC 0509Z 221DEG 34KT 3631 9482 

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

$$

3 follow-up statements

299 
WWUS54 KTSA 110512
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1212 AM CDT Mon Oct 11 2021

ARC007-OKC041-110600-
/O.CON.KTSA.TO.W.0038.000000T0000Z-211011T0600Z/
Benton AR-Delaware OK-
1212 AM CDT Mon Oct 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR
NORTHWESTERN BENTON AND CENTRAL DELAWARE COUNTIES...
        
At 1212 AM CDT, a confirmed tornado was located 6 miles south of Jay,
moving northeast at 35 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 in or near the path include...
Jay...                            Gravette...
Colcord...                        Kansas...
Maysville...                      Lake Eucha State Park...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement 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 3650 9462 3650 9436 3620 9479 3632 9496
      3667 9463 3667 9462
TIME...MOT...LOC 0512Z 217DEG 31KT 3633 9480 

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

$$

784 
WWUS54 KTSA 110526
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1226 AM CDT Mon Oct 11 2021

ARC007-OKC041-110600-
/O.CON.KTSA.TO.W.0038.000000T0000Z-211011T0600Z/
Benton AR-Delaware OK-
1226 AM CDT Mon Oct 11 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR
NORTHWESTERN BENTON AND NORTHEASTERN DELAWARE COUNTIES...
        
At 1226 AM CDT, a confirmed tornado was located 4 miles east of Jay,
moving northeast at 35 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 in or near the path include...
Jay...                            Gravette...
Maysville...                      Lake Eucha State Park...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement 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 3650 9462 3650 9436 3628 9468 3643 9486
      3667 9463 3667 9462
TIME...MOT...LOC 0526Z 217DEG 28KT 3642 9472 

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

$$

777 
WWUS54 KTSA 110548
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1248 AM CDT Mon Oct 11 2021

ARC007-OKC041-110557-
/O.CAN.KTSA.TO.W.0038.000000T0000Z-211011T0600Z/
Benton AR-Delaware OK-
1248 AM CDT Mon Oct 11 2021

...THE TORNADO WARNING FOR NORTHWESTERN BENTON AND NORTHEASTERN
DELAWARE COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 200 AM CDT for northwestern
Arkansas...and northeastern Oklahoma.

LAT...LON 3650 9462 3650 9436 3628 9468 3643 9486
      3667 9463 3667 9462
TIME...MOT...LOC 0547Z 221DEG 34KT 3658 9455 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 8:04 PM CDT	Flash Flood Warning	TSA	Osage, Pawnee	4 hr
Oct 10, 8:05 PM CDT	Special Weather Statement	TSA	Pawnee	55 min
Oct 10, 8:21 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	54 min
Oct 10, 8:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Creek, Okfuskee	64 min
Oct 10, 9:17 PM CDT	Special Weather Statement	TSA	Osage	58 min
Oct 10, 9:28 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	24 min
Oct 10, 9:36 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Creek, McIntosh, Okfuskee, Okmulgee, Tulsa	54 min
Oct 10, 9:55 PM CDT	Special Weather Statement	TSA	Osage	50 min
Oct 10, 10:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	McIntosh, Pittsburg	59 min
Oct 10, 10:05 PM CDT	Tornado Warning	TSA	Okmulgee, Tulsa, Wagoner	25 min
Oct 10, 10:09 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	36 min
Oct 10, 10:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	McIntosh, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	56 min
Oct 10, 10:21 PM CDT	Tornado Warning	TSA	McIntosh, Pittsburg	39 min
Oct 10, 10:29 PM CDT	Tornado Warning	TSA	Tulsa, Wagoner	46 min
Oct 10, 10:41 PM CDT	Areal Flood Advisory	TSA	Cherokee, Haskell, McIntosh, Muskogee, Okfuskee, Okmulgee and 3 more	3 hr
Oct 10, 10:41 PM CDT	Tornado Warning	TSA	McIntosh, Muskogee, Okmulgee	34 min
Oct 10, 10:43 PM CDT	Tornado Warning	TSA	Wagoner	32 min
Oct 10, 10:53 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, Pittsburg, Pushmataha	67 min
Oct 10, 10:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Cherokee, Delaware, McIntosh, Mayes, Muskogee, Rogers and 1 more	64 min
Oct 10, 10:58 PM CDT	Tornado Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg	47 min
Oct 10, 11:05 PM CDT	Tornado Warning	TSA	Mayes, Rogers, Wagoner	40 min
Oct 10, 11:33 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee, Sequoyah	42 min
Oct 10, 11:43 PM CDT	Areal Flood Advisory	TSA	Latimer, LeFlore, Pushmataha	70 min
Oct 10, 11:48 PM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Delaware, Mayes	110 min
Oct 10, 11:55 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Ottawa	50 min
Oct 11, 12:07 AM CDT	Tornado Warning	TSA	Adair, Cherokee	38 min
Oct 11, 1:18 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	42 min
Oct 11, 1:26 AM CDT	Special Weather Statement	TSA	Creek, Tulsa	49 min
Oct 11, 1:34 AM CDT	Areal Flood Advisory	TSA	Creek, Osage, Pawnee	116 min
Oct 11, 1:37 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	33 min
Oct 11, 2:02 AM CDT	Special Weather Statement	TSA	Rogers, Tulsa, Wagoner, Washington	43 min
Oct 11, 2:09 AM CDT	Special Weather Statement	TSA	Washington	51 min
Oct 11, 2:34 AM CDT	Special Weather Statement	TSA	Craig, Delaware, Mayes, Nowata, Ottawa	56 min
Oct 11, 3:27 AM CDT	Special Weather Statement	TSA	Ottawa	48 min
Oct 11, 12:50 AM CDT	Special Weather Statement	TSA	Benton	55 min
Oct 11, 4:13 AM CDT	Special Weather Statement	TSA	Madison	47 min

Nearby

Tornado Warnings in Oklahoma, 2021 Tornado Warnings in Arkansas, 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.