Alert archive / Arkansas / Tornado Warnings in 2020

Tornado Warning 51, NWS Tulsa, OK

November 24, 2020Crawford County, Sebastian County, Arkansas; LeFlore County, Sequoyah County, Oklahoma

NWS Tulsa, OK issued this tornado warning at Nov 24, 2020, 9:53 PM CST for Crawford County, Sebastian County, Arkansas; LeFlore County, Sequoyah County, Oklahoma. It was in force for 19 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 24, 2020, 9:53 PM CST (03:53 UTC)
Expired: Nov 24, 2020, 10:12 PM CST
In force: 19 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Crawford County, AR, Sebastian County, AR, LeFlore County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 10 km from the middle of the area, began a volume at 03:56 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 24, 8:29 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.9 hours before the alert went out and 186 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: 482 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 643 m²/s²
0-3 km storm-relative helicity: 677 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

465 
WFUS54 KTSA 250353
TORTSA
ARC033-131-OKC079-135-250430-
/O.NEW.KTSA.TO.W.0051.201125T0353Z-201125T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
953 PM CST Tue Nov 24 2020

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Southwestern Crawford County in northwestern Arkansas...
  Northwestern Sebastian County in west central Arkansas...
  Southeastern Sequoyah County in east central Oklahoma...
  Northeastern Le Flore County in southeastern Oklahoma...

* Until 1030 PM CST.
    
* At 953 PM CST, a severe thunderstorm capable of producing a tornado
  was located 3 miles northeast of Spiro, moving northeast at 50 mph.

  HAZARD...Tornado and quarter 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 in or near the path include...
  Fort Smith...                     Van Buren...
  Barling...                        Spiro...
  Arkoma...                         Moffett...
  Fort Smith Regional Airport...    Central City...
  Shibley...                        Scullyville...
  Braden...                         Mill Creek...
  Cottonwood...                     Dora...
  Furry...                          

This includes the following highways,
 Interstate 40 in Arkansas between mile markers 0 and 8.
 Interstate 540 between mile markers 1 and 14.

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 3520 9458 3532 9465 3552 9434 3535 9417
TIME...MOT...LOC 0353Z 232DEG 44KT 3528 9457 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

1 follow-up statement

117 
WWUS54 KTSA 250412
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1012 PM CST Tue Nov 24 2020

ARC033-131-OKC079-135-250421-
/O.CAN.KTSA.TO.W.0051.000000T0000Z-201125T0430Z/
Crawford AR-Sebastian AR-Sequoyah OK-Le Flore OK-
1012 PM CST Tue Nov 24 2020

...THE TORNADO WARNING FOR SOUTHWESTERN CRAWFORD...NORTHWESTERN
SEBASTIAN...SOUTHEASTERN SEQUOYAH AND NORTHEASTERN LE FLORE COUNTIES
IS CANCELLED...
    
The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Severe Thunderstorm Watch remains in effect until 200 AM CST for
northwestern and west central Arkansas...and southeastern and east
central Oklahoma.


LAT...LON 3520 9458 3532 9465 3552 9434 3535 9417
TIME...MOT...LOC 0410Z 232DEG 44KT 3542 9435 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 24, 8:39 PM CST	Severe Thunderstorm Warning	TSA	Benton	51 min
Nov 24, 9:48 PM CST	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	42 min
Nov 24, 10:23 PM CST	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	52 min
Nov 24, 6:20 PM CST	Special Weather Statement	TSA	Osage	40 min
Nov 24, 6:25 PM CST	Severe Thunderstorm Warning	TSA	Osage	50 min
Nov 24, 6:37 PM CST	Special Weather Statement	TSA	Osage	23 min
Nov 24, 6:58 PM CST	Special Weather Statement	TSA	Osage	47 min
Nov 24, 7:11 PM CST	Severe Thunderstorm Warning	TSA	Osage	34 min
Nov 24, 7:22 PM CST	Special Weather Statement	TSA	Nowata, Washington	38 min
Nov 24, 7:45 PM CST	Special Weather Statement	TSA	Okfuskee, Okmulgee	45 min
Nov 24, 7:47 PM CST	Special Weather Statement	TSA	Nowata, Rogers, Tulsa	43 min
Nov 24, 7:50 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	40 min
Nov 24, 7:58 PM CST	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	22 min
Nov 24, 8:02 PM CST	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	43 min
Nov 24, 8:26 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Muskogee, Pittsburg	49 min
Nov 24, 8:42 PM CST	Special Weather Statement	TSA	Cherokee, Muskogee	33 min
Nov 24, 8:44 PM CST	Special Weather Statement	TSA	Latimer, Pushmataha	46 min
Nov 24, 9:17 PM CST	Special Weather Statement	TSA	Choctaw, LeFlore, Pushmataha, Sequoyah	58 min

Nearby

Tornado Warnings in Arkansas, 2020 Tornado Warnings in Oklahoma, 2020 Every tornado warning in 2020 Tornadoes in 2020

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.