Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 132, NWS Tulsa, OK

July 10, 20214 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 8:43 PM CDT for 4 counties in Oklahoma. It was in force for 29 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: Jul 10, 2021, 8:43 PM CDT (01:43 UTC)
Expired: Jul 10, 2021, 9:12 PM CDT
In force: 29 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Cherokee County, OK, Muskogee County, OK, Sequoyah County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 65 km from the middle of the area, began a volume at 01:44 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
Jul 10, 3:02 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.7 hours before the alert went out and 187 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: 2329 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 193 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 11.8

Open this sounding in Storm Lab

The text

As transmitted.

072 
WUUS54 KTSA 110143
SVRTSA
OKC021-101-135-145-110230-
/O.NEW.KTSA.SV.W.0132.210711T0143Z-210711T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
843 PM CDT Sat Jul 10 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northwestern Sequoyah County in east central Oklahoma...
  Southeastern Wagoner County in northeastern Oklahoma...
  Southern Cherokee County in east central Oklahoma...
  Northeastern Muskogee County in east central Oklahoma...

* Until 930 PM CDT.

* At 843 PM CDT, severe thunderstorms were located along a line
  extending from 4 miles north of Sequoyah State Park to 4 miles east
  of Muskogee to 4 miles south of Haskell, moving southeast 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...
  Muskogee...                       Fort Gibson...
  Warner...                         Vian...
  Gore...                           Okay...
  Webbers Falls...                  Hulbert...
  Braggs...                         Taft...
  Greenleaf State Park...           Pumpkin Center...
  Cookson...                        Cherokee Landing State Park...
  Sequoyah State Park...            Lake Tenkiller State Park...
  Keefeton...                       Summit...
  Box...                            

This includes Interstate 40 in Oklahoma between mile markers 277 and
299.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3578 9481 3545 9491 3547 9530 3552 9535
      3555 9535 3555 9538 3580 9563 3576 9537
      3600 9527
TIME...MOT...LOC 0143Z 300DEG 31KT 3596 9523 3573 9530 3575 9568 

HAIL...<.75IN
WIND...60MPH
 
$$

Lacy

2 follow-up statements

577 
WWUS54 KTSA 110159
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
859 PM CDT Sat Jul 10 2021

OKC021-145-110208-
/O.CAN.KTSA.SV.W.0132.000000T0000Z-210711T0230Z/
Wagoner OK-Cherokee OK-
859 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN WAGONER AND
SOUTHERN CHEROKEE COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern, northeastern and east central Oklahoma.

LAT...LON 3577 9558 3579 9555 3576 9537 3580 9513
      3564 9512 3564 9485 3545 9491 3547 9530
      3552 9535 3555 9535 3555 9538 3577 9560
TIME...MOT...LOC 0158Z 300DEG 31KT 3590 9510 3567 9517 3569 9555 

$$

OKC101-135-110230-
/O.CON.KTSA.SV.W.0132.000000T0000Z-210711T0230Z/
Sequoyah OK-Muskogee OK-
859 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHWESTERN SEQUOYAH AND NORTHEASTERN MUSKOGEE COUNTIES...

At 858 PM CDT, severe thunderstorms were located along a line
extending from 3 miles southeast of Hulbert to near Braggs to 4 miles
south of Taft, moving southeast 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...
Muskogee...                       Warner...
Vian...                           Gore...
Webbers Falls...                  Braggs...
Taft...                           Greenleaf State Park...
Pumpkin Center...                 Lake Tenkiller State Park...
Keefeton...                       Summit...
Box...                            

This includes Interstate 40 in Oklahoma between mile markers 277 and
299.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3577 9558 3579 9555 3576 9537 3580 9513
      3564 9512 3564 9485 3545 9491 3547 9530
      3552 9535 3555 9535 3555 9538 3577 9560
TIME...MOT...LOC 0158Z 300DEG 31KT 3590 9510 3567 9517 3569 9555 

HAIL...<.75IN
WIND...60MPH
 
$$

Lacy

257 
WWUS54 KTSA 110212
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
912 PM CDT Sat Jul 10 2021

OKC101-135-110222-
/O.CAN.KTSA.SV.W.0132.000000T0000Z-210711T0230Z/
Sequoyah OK-Muskogee OK-
912 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SEQUOYAH AND
NORTHEASTERN MUSKOGEE COUNTIES IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.  However gusty winds and
heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern, northeastern and east central Oklahoma.

LAT...LON 3577 9558 3579 9555 3576 9537 3580 9513
      3564 9512 3564 9485 3545 9491 3547 9530
      3552 9535 3555 9535 3555 9538 3577 9560
TIME...MOT...LOC 0211Z 300DEG 31KT 3584 9498 3561 9505 3563 9543 

$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 7:08 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	52 min
Jul 10, 7:25 PM CDT	Special Weather Statement	TSA	Cherokee, Muskogee, Sequoyah	35 min
Jul 10, 7:27 PM CDT	Special Weather Statement	TSA	Tulsa, Wagoner	33 min
Jul 10, 7:35 PM CDT	Areal Flood Advisory	TSA	Cherokee, Creek, Mayes, Osage, Pawnee, Rogers and 2 more	3 hr
Jul 10, 7:49 PM CDT	Special Weather Statement	TSA	Tulsa	26 min
Jul 10, 7:51 PM CDT	Severe Thunderstorm Warning	TSA	Creek	39 min
Jul 10, 7:58 PM CDT	Special Weather Statement	TSA	Adair, Sequoyah	32 min
Jul 10, 8:11 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Muskogee, Rogers, Tulsa, Wagoner	49 min
Jul 10, 8:23 PM CDT	Special Weather Statement	TSA	Sequoyah	37 min
Jul 10, 8:26 PM CDT	Special Weather Statement	TSA	Creek, Okfuskee, Okmulgee	49 min
Jul 10, 8:28 PM CDT	Special Weather Statement	TSA	Sequoyah	32 min
Jul 10, 8:39 PM CDT	Severe Thunderstorm Warning	TSA	Creek, McIntosh, Okmulgee	51 min
Jul 10, 8:40 PM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Creek, Muskogee, Okmulgee, Sequoyah and 2 more	3 hr
Jul 10, 8:46 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	44 min
Jul 10, 9:17 PM CDT	Special Weather Statement	TSA	Okfuskee	43 min
Jul 10, 9:20 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	40 min
Jul 10, 9:23 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee	34 min
Jul 10, 9:56 PM CDT	Special Weather Statement	TSA	Latimer, Pittsburg	49 min
Jul 10, 10:21 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore, Pittsburg	39 min
Jul 10, 10:22 PM CDT	Areal Flood Advisory	TSA	Creek, Haskell, McIntosh, Muskogee, Okfuskee, Okmulgee and 1 more	3 hr
Jul 10, 10:41 PM CDT	Special Weather Statement	TSA	Pittsburg	34 min
Jul 10, 10:50 PM CDT	Special Weather Statement	TSA	Latimer, LeFlore	25 min
Jul 10, 11:07 PM CDT	Special Weather Statement	TSA	LeFlore	38 min
Jul 10, 11:10 PM CDT	Special Weather Statement	TSA	Pittsburg	35 min
Jul 11, 12:05 AM CDT	Special Weather Statement	TSA	Pushmataha	55 min
Jul 11, 12:43 AM CDT	Special Weather Statement	TSA	Choctaw, Pushmataha	47 min
Jul 11, 1:28 AM CDT	Special Weather Statement	TSA	Choctaw	62 min
Jul 11, 1:56 AM CDT	Areal Flood Advisory	TSA	Choctaw	3 hr
Jul 11, 2:27 AM CDT	Special Weather Statement	TSA	Choctaw	63 min

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.