Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS Tulsa, OK

July 10, 2021Creek County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 7:51 PM CDT for Creek County, Oklahoma. It was in force for 39 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, 7:51 PM CDT (00:51 UTC)
Expired: Jul 10, 2021, 8:30 PM CDT
In force: 39 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 70.0 mph

County Creek County, OK

The radar

The Tulsa radar (KINX), 88 km from the middle of the area, began a volume at 00:55 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, 0.9 hours before the alert went out and 111 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.

428 
WUUS54 KTSA 110051
SVRTSA
OKC037-110130-
/O.NEW.KTSA.SV.W.0129.210711T0051Z-210711T0130Z/

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

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Western Creek County in northeastern Oklahoma...

* Until 830 PM CDT.

* At 751 PM CDT, a severe thunderstorm was located over Drumright,
  moving southeast at 35 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations in or near the path include...
  Bristow...                        Drumright...
  Depew...                          Slick...
  Shamrock...                       Milfay...

This includes Interstate 44 between mile markers 178 and 194.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3605 9662 3608 9652 3568 9619 3564 9619
      3564 9662
TIME...MOT...LOC 0051Z 333DEG 29KT 3597 9658 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

Lacy

2 follow-up statements

437 
WWUS54 KTSA 110105
SVSTSA

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

OKC037-110130-
/O.CON.KTSA.SV.W.0129.000000T0000Z-210711T0130Z/
Creek OK-
805 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTHWESTERN CREEK COUNTY...

At 805 PM CDT, a severe thunderstorm was located 3 miles southeast of
Shamrock, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

Locations in or near the path include...
Bristow...                        Drumright...
Depew...                          Slick...
Shamrock...                       Milfay...

This includes Interstate 44 between mile markers 178 and 194.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3599 9662 3601 9646 3568 9619 3564 9619
      3564 9662
TIME...MOT...LOC 0105Z 332DEG 26KT 3589 9653 

HAIL...0.88IN
WIND...70MPH
 
$$

Lacy

516 
WWUS54 KTSA 110126
SVSTSA

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

OKC037-110136-
/O.EXP.KTSA.SV.W.0129.000000T0000Z-210711T0130Z/
Creek OK-
826 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CREEK COUNTY WILL
EXPIRE AT 830 PM CDT...
                
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 will be allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northeastern Oklahoma.

LAT...LON 3599 9662 3601 9646 3568 9619 3564 9619
      3564 9662
TIME...MOT...LOC 0126Z 333DEG 29KT 3574 9643 

$$

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, 7:58 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, 9:23 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.