Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 171, NWS Tulsa, OK

October 13, 2021Choctaw County, Pushmataha County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 13, 2021, 4:22 PM CDT for Choctaw County, Pushmataha County, Oklahoma. It was in force for 32 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, 4:22 PM CDT (21:22 UTC)
Expired: Oct 13, 2021, 4:54 PM CDT
In force: 32 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Choctaw County, OK, Pushmataha County, OK

The radar

The Western Arkansas radar (KSRX), 159 km from the middle of the area, began a volume at 21:24 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

Fort Worth, TX (KFWD), launched 12:00Z, 9.4 hours before the alert went out and 227 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: 756 J/kg
Mixed-layer CIN: -163 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 310 m²/s²
0-3 km storm-relative helicity: 377 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

200 
WUUS54 KTSA 132122
SVRTSA
OKC023-127-132215-
/O.NEW.KTSA.SV.W.0171.211013T2122Z-211013T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
422 PM CDT Wed Oct 13 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southeastern Pushmataha County in southeastern Oklahoma...
  Northwestern Choctaw County in southeastern Oklahoma...

* Until 515 PM CDT.

* At 422 PM CDT, a severe thunderstorm was located near Kent, moving
  northeast at 35 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations in or near the path include...
  Hugo...                           Antlers...
  Rattan...                         Soper...
  Kent...                           Snow...
  Messer...                         Nashoba...
  Kellond...                        Oleta...
  Cloudy...                         Corinne...
  Sobol...                          Apple...
  Speer...                          Dela...
  Unger...                          Finley...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3391 9572 3412 9588 3416 9582 3416 9578
      3418 9578 3458 9513 3445 9504 3425 9505
      3424 9515 3417 9515
TIME...MOT...LOC 2122Z 236DEG 32KT 3413 9565 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

69

3 follow-up statements

710 
WWUS54 KTSA 132135
SVSTSA

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

OKC023-127-132215-
/O.CON.KTSA.SV.W.0171.000000T0000Z-211013T2215Z/
Pushmataha OK-Choctaw OK-
435 PM CDT Wed Oct 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR SOUTHEASTERN PUSHMATAHA AND NORTH CENTRAL CHOCTAW COUNTIES...

At 435 PM CDT, a severe thunderstorm was located 5 miles southeast of
Antlers, moving northeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations in or near the path include...
Antlers...                        Rattan...
Kent...                           Snow...
Nashoba...                        Kellond...
Oleta...                          Cloudy...
Corinne...                        Sobol...
Apple...                          Speer...
Dela...                           Finley...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3407 9566 3418 9578 3458 9513 3445 9504
      3425 9505 3424 9515 3417 9515
TIME...MOT...LOC 2135Z 236DEG 32KT 3420 9553 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

69

949 
WWUS54 KTSA 132144
SVSTSA

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

OKC023-132153-
/O.CAN.KTSA.SV.W.0171.000000T0000Z-211013T2215Z/
Choctaw OK-
444 PM CDT Wed Oct 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CHOCTAW COUNTY
IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3458 9513 3445 9504 3425 9505 3424 9515
      3417 9515 3416 9560 3428 9562
TIME...MOT...LOC 2143Z 236DEG 32KT 3424 9545 

$$

OKC127-132215-
/O.CON.KTSA.SV.W.0171.000000T0000Z-211013T2215Z/
Pushmataha OK-
444 PM CDT Wed Oct 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR SOUTHEASTERN PUSHMATAHA COUNTY...

At 443 PM CDT, a severe thunderstorm was located 3 miles northwest of
Rattan, moving northeast at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations in or near the path include...
Antlers...                        Rattan...
Snow...                           Nashoba...
Oleta...                          Cloudy...
Corinne...                        Dela...
Finley...                         

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3458 9513 3445 9504 3425 9505 3424 9515
      3417 9515 3416 9560 3428 9562
TIME...MOT...LOC 2143Z 236DEG 32KT 3424 9545 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

69

266 
WWUS54 KTSA 132154
SVSTSA

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

OKC127-132203-
/O.CAN.KTSA.SV.W.0171.000000T0000Z-211013T2215Z/
Pushmataha OK-
454 PM CDT Wed Oct 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PUSHMATAHA COUNTY
IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds 
to 40 mph are still possible with this thunderstorm.

LAT...LON 3458 9513 3445 9504 3425 9505 3424 9515
      3417 9515 3416 9560 3428 9562
TIME...MOT...LOC 2153Z 236DEG 32KT 3429 9535 

$$

69

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 13, 4:48 AM CDT	Special Weather Statement	TSA	Osage	42 min
Oct 13, 5:27 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	48 min
Oct 13, 6:03 AM CDT	Special Weather Statement	TSA	Creek, Osage, Washington	42 min
Oct 13, 6:39 AM CDT	Special Weather Statement	TSA	Creek, Nowata, Tulsa, Washington	66 min
Oct 13, 6:48 AM CDT	Special Weather Statement	TSA	Okfuskee	57 min
Oct 13, 7:29 AM CDT	Special Weather Statement	TSA	Craig	46 min
Oct 13, 7:34 AM CDT	Special Weather Statement	TSA	Okmulgee, Rogers, Tulsa	41 min
Oct 13, 8:08 AM CDT	Special Weather Statement	TSA	Mayes, Rogers	52 min
Oct 13, 8:15 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	45 min
Oct 13, 8:18 AM CDT	Special Weather Statement	TSA	Craig, Ottawa	42 min
Oct 13, 8:42 AM CDT	Special Weather Statement	TSA	Muskogee, Wagoner	48 min
Oct 13, 8:48 AM CDT	Special Weather Statement	TSA	Mayes	42 min
Oct 13, 8:52 AM CDT	Special Weather Statement	TSA	McIntosh	23 min
Oct 13, 9:10 AM CDT	Special Weather Statement	TSA	Haskell	50 min
Oct 13, 9:17 AM CDT	Special Weather Statement	TSA	Cherokee	28 min
Oct 13, 9:21 AM CDT	Special Weather Statement	TSA	Cherokee, Delaware	24 min
Oct 13, 9:39 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	13 min
Oct 13, 9:46 AM CDT	Special Weather Statement	TSA	Adair	44 min
Oct 13, 9:49 AM CDT	Special Weather Statement	TSA	Haskell, Sequoyah	41 min
Oct 13, 10:22 AM CDT	Special Weather Statement	TSA	Sequoyah	38 min
Oct 13, 3:39 PM CDT	Special Weather Statement	TSA	Choctaw, Pushmataha	66 min
Oct 13, 4:19 PM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, LeFlore, Pushmataha	3 hr
Oct 13, 4:51 PM CDT	Special Weather Statement	TSA	Latimer, LeFlore	39 min
Oct 13, 4:57 PM CDT	Special Weather Statement	TSA	Pushmataha	63 min
Oct 13, 5:45 PM CDT	Areal Flood Advisory	TSA	Haskell, LeFlore, Sequoyah	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2021 Every severe thunderstorm warning 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.