Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 135, NWS Tulsa, OK

July 10, 2021McIntosh County, Muskogee County, Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 9:23 PM CDT for McIntosh County, Muskogee County, Okmulgee County, Oklahoma. It was in force for 34 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, 9:23 PM CDT (02:23 UTC)
Expired: Jul 10, 2021, 9:57 PM CDT
In force: 34 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK

The radar

The Tulsa radar (KINX), 94 km from the middle of the area, began a volume at 02:27 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

Norman, OK (KOUN), launched 00:00Z, 2.4 hours before the alert went out and 164 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: 2495 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1225 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 156 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 14.8

Open this sounding in Storm Lab

The text

As transmitted.

764 
WUUS54 KTSA 110223
SVRTSA
OKC091-101-111-110315-
/O.NEW.KTSA.SV.W.0135.210711T0223Z-210711T0315Z/

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

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  McIntosh County in southeastern Oklahoma...
  Central Muskogee County in east central Oklahoma...
  Southeastern Okmulgee County in northeastern Oklahoma...

* Until 1015 PM CDT.

* At 923 PM CDT, a severe thunderstorm was located 5 miles northeast
  of Hoffman, moving southeast at 30 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...
  Eufaula...                        Checotah...
  Grayson...                        Council Hill...
  Rentiesville...                   Hoffman...
  Stidham...                        Vivian...
  Lake Eufaula State Park...        Hitchita...
  Pierce...                         Eram...
  Onapa...                          

This includes Interstate 40 in Oklahoma between mile markers 246 and
273.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3564 9575 3542 9527 3529 9546 3530 9550
      3528 9552 3526 9551 3525 9557 3522 9560
      3522 9562 3524 9560 3525 9561 3522 9568
      3520 9568 3550 9589
TIME...MOT...LOC 0223Z 309DEG 24KT 3553 9576 

HAIL...1.00IN
WIND...60MPH
 
$$

Lacy

2 follow-up statements

194 
WWUS54 KTSA 110241
SVSTSA

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

OKC091-101-111-110315-
/O.CON.KTSA.SV.W.0135.000000T0000Z-210711T0315Z/
McIntosh OK-Muskogee OK-Okmulgee OK-
941 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT
FOR MCINTOSH...CENTRAL MUSKOGEE AND SOUTHEASTERN OKMULGEE COUNTIES...

At 941 PM CDT, a severe thunderstorm was located 4 miles northwest of
Lake Eufaula State Park, moving southeast at 30 mph.

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

SOURCE...Radar indicated.

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

Locations in or near the path include...
Eufaula...                        Checotah...
Grayson...                        Council Hill...
Rentiesville...                   Hoffman...
Stidham...                        Vivian...
Lake Eufaula State Park...        Hitchita...
Pierce...                         Eram...
Onapa...                          

This includes Interstate 40 in Oklahoma between mile markers 246 and
273.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3564 9575 3542 9527 3529 9546 3530 9550
      3528 9552 3526 9551 3525 9557 3522 9560
      3522 9562 3524 9560 3525 9561 3522 9568
      3520 9568 3550 9589
TIME...MOT...LOC 0241Z 309DEG 24KT 3545 9564 

HAIL...0.75IN
WIND...60MPH
 
$$

Lacy

317 
WWUS54 KTSA 110257
SVSTSA

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

OKC091-101-111-110307-
/O.CAN.KTSA.SV.W.0135.000000T0000Z-210711T0315Z/
McIntosh OK-Muskogee OK-Okmulgee OK-
957 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR MCINTOSH...CENTRAL MUSKOGEE
AND SOUTHEASTERN OKMULGEE COUNTIES 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 and
heavy rain are still possible with this thunderstorm.

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

LAT...LON 3564 9575 3542 9527 3529 9546 3530 9550
      3528 9552 3526 9551 3525 9557 3522 9560
      3522 9562 3524 9560 3525 9561 3522 9568
      3520 9568 3550 9589
TIME...MOT...LOC 0255Z 309DEG 24KT 3538 9554 

$$

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, 8:43 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Sequoyah, Wagoner	29 min
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, 9:56 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.