Alert archive / Arkansas / Tornado Warnings in 2021

Tornado Warning 39, NWS Tulsa, OK

October 13, 2021Franklin County, Sebastian County, Arkansas

NWS Tulsa, OK issued this tornado warning at Oct 13, 2021, 6:01 PM CDT for Franklin County, Sebastian County, Arkansas. It was in force for 44 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
Oct 13, 2021, 6:01 PM CDT (23:01 UTC)
Expired
Oct 13, 2021, 6:45 PM CDT
In force
44 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Franklin County, AR, Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 40 km from the middle of the area, began a volume at 23:01 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

Springfield, MO (KSGF), launched 12:00Z, 11.0 hours before the alert went out and 174 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2021-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 722 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2021-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 440 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
722 J/kg
Mixed-layer CIN
-164 J/kg
Mixed-layer LCL
646 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
440 m²/s²
0-3 km storm-relative helicity
590 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

Open this sounding in Storm Lab

The text

As transmitted.

023 
WFUS54 KTSA 132301
TORTSA
ARC047-131-132345-
/O.NEW.KTSA.TO.W.0039.211013T2301Z-211013T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Tulsa OK
601 PM CDT Wed Oct 13 2021

The National Weather Service in Tulsa has issued a

* Tornado Warning for...
  Southern Franklin County in west central Arkansas...
  Northeastern Sebastian County in west central Arkansas...

* Until 645 PM CDT.
    
* At 600 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Bloomer, moving northeast at 35 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...
  Ozark...                          Charleston...
  Greenwood...                      Lavaca...
  Altus...                          Branch...
  Denning...                        Wiederkehr Village...
  Bloomer...                        Washburn...
  Burnville...                      Fort Chaffee...
  Central City...                   Etna...
  Alix...                           Meg...
  Milltown...                       Peter Pender...
  Vesta...                          Cecil...

This includes Interstate 40 in Arkansas between mile markers 33 and
41.
 
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 3538 9371 3537 9375 3542 9380 3531 9381
      3532 9392 3523 9392 3523 9402 3518 9403
      3513 9420 3531 9430 3538 9414 3539 9414
      3559 9375 3543 9371
TIME...MOT...LOC 2300Z 244DEG 31KT 3530 9413 

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

$$

69
3 follow-up statements
596 
WWUS54 KTSA 132314
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
614 PM CDT Wed Oct 13 2021

ARC131-132324-
/O.CAN.KTSA.TO.W.0039.000000T0000Z-211013T2345Z/
Sebastian AR-
614 PM CDT Wed Oct 13 2021

...THE TORNADO WARNING FOR NORTHEASTERN SEBASTIAN 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 3538 9371 3537 9375 3542 9380 3531 9381
      3532 9392 3523 9392 3523 9402 3521 9403
      3521 9405 3520 9405 3520 9406 3522 9407
      3542 9408 3559 9375 3543 9371
TIME...MOT...LOC 2314Z 252DEG 25KT 3533 9403 

$$

ARC047-132345-
/O.CON.KTSA.TO.W.0039.000000T0000Z-211013T2345Z/
Franklin AR-
614 PM CDT Wed Oct 13 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR SOUTHERN
FRANKLIN COUNTY...
    
At 614 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Charleston, moving east at 30 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...
Ozark...                          Charleston...
Altus...                          Branch...
Denning...                        Wiederkehr Village...
Fort Chaffee...                   Etna...
Alix...                           Meg...
Peter Pender...                   Vesta...
Cecil...                          

This includes Interstate 40 in Arkansas between mile markers 33 and
41.
 
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 3538 9371 3537 9375 3542 9380 3531 9381
      3532 9392 3523 9392 3523 9402 3521 9403
      3521 9405 3520 9405 3520 9406 3522 9407
      3542 9408 3559 9375 3543 9371
TIME...MOT...LOC 2314Z 252DEG 25KT 3533 9403 

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

$$

69
812 
WWUS54 KTSA 132326
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
626 PM CDT Wed Oct 13 2021

ARC047-132345-
/O.CON.KTSA.TO.W.0039.000000T0000Z-211013T2345Z/
Franklin AR-
626 PM CDT Wed Oct 13 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR SOUTHERN
FRANKLIN COUNTY...
    
At 626 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Ratcliff, moving east at 35 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...
Ozark...                          Altus...
Branch...                         Denning...
Wiederkehr Village...             Etna...
Peter Pender...                   Alix...
Meg...                            Cecil...

This includes Interstate 40 in Arkansas between mile markers 38 and
41.
 
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 3538 9371 3537 9375 3542 9380 3531 9381
      3532 9392 3531 9397 3541 9400 3554 9374
      3543 9371
TIME...MOT...LOC 2326Z 255DEG 29KT 3534 9391 

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

$$

69
461 
WWUS54 KTSA 132337
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
637 PM CDT Wed Oct 13 2021

ARC047-132347-
/O.EXP.KTSA.TO.W.0039.000000T0000Z-211013T2345Z/
Franklin AR-
637 PM CDT Wed Oct 13 2021

...THE TORNADO WARNING FOR SOUTHERN FRANKLIN COUNTY WILL EXPIRE AT
645 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.  However gusty
winds to 50 mph are still possible with this thunderstorm.

LAT...LON 3538 9371 3537 9375 3542 9380 3531 9381
      3532 9392 3531 9397 3541 9400 3554 9374
      3543 9371
TIME...MOT...LOC 2337Z 244DEG 31KT 3538 9382 

$$

69

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 13, 9:46 AM CDTSpecial Weather StatementTSABenton, Washington44 min
Oct 13, 5:24 PM CDTSpecial Weather StatementTSASebastian51 min
Oct 13, 5:45 PM CDTAreal Flood AdvisoryTSACrawford, Sebastian3 hr

Nearby

Tornado Warnings in Arkansas, 2021Every tornado warning in 2021Tornadoes 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.