Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 119, NWS Tulsa, OK

July 10, 2021Nowata County, Osage County, Washington County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 4:43 PM CDT for Nowata County, Osage County, Washington County, Oklahoma. It was in force for 47 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 10, 2021, 4:43 PM CDT (21:43 UTC)
Expired: Jul 10, 2021, 5:30 PM CDT
In force: 47 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Nowata County, OK, Osage County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 87 km from the middle of the area, began a volume at 21:43 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.

What was reported inside it

Time	Report	Where	Remark
Jul 10, 5:02 PM CDT	TSTM WND GST 61	Bartlesville, OK	CORRECTS PREVIOUS TSTM WND GST REPORT FROM BARTLESVILLE.
Jul 10, 5:06 PM CDT	TSTM WND GST 61	Bartlesville, OK

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 12:00Z, 9.7 hours before the alert went out and 195 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: 917 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 703 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

404 
WUUS54 KTSA 102143
SVRTSA
OKC105-113-147-102230-
/O.NEW.KTSA.SV.W.0119.210710T2143Z-210710T2230Z/

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

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Northeastern Osage County in northeastern Oklahoma...
  Northern Washington County in northeastern Oklahoma...
  Northern Nowata County in northeastern Oklahoma...

* Until 530 PM CDT.

* At 442 PM CDT, severe thunderstorms were located along a line
  extending from 3 miles southwest of Caney to 4 miles north of
  Bigheart, moving southeast 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...
  Bartlesville...                   Pawhuska...
  Dewey...                          Copan...
  Delaware...                       Lenapah...
  Wann...                           Bigheart...
  Pearsonia...                      Bartlesville Municipal Airport...
  Hulah...                          Sunset Lake...
  Osage Hills State Park...         Okesa...
  Wah Sha She State Park...     

A 60 mph wind gust was reported at Chautauqua at 429 PM.    

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3700 9578 3679 9546 3661 9633 3700 9664
TIME...MOT...LOC 2142Z 312DEG 28KT 3698 9598 3692 9622 

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

Lacy

2 follow-up statements

499 
WWUS54 KTSA 102159
SVSTSA

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

OKC105-113-147-102230-
/O.CON.KTSA.SV.W.0119.000000T0000Z-210710T2230Z/
Osage OK-Washington OK-Nowata OK-
459 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHEASTERN OSAGE...NORTHERN WASHINGTON AND NORTHERN NOWATA
COUNTIES...

At 459 PM CDT, severe thunderstorms were located along a line
extending from 3 miles southeast of Copan to 4 miles northeast of
Osage Hills State Park, moving east 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...
Bartlesville...                   Dewey...
Copan...                          Delaware...
Lenapah...                        Wann...
Bigheart...                       Bartlesville Municipal Airport...
Hulah...                          Sunset Lake...
Osage Hills State Park...         Okesa...
Wah Sha She State Park...         

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3700 9578 3679 9546 3663 9623 3700 9664
TIME...MOT...LOC 2159Z 290DEG 29KT 3685 9588 3679 9612 

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

Lacy

226 
WWUS54 KTSA 102216
SVSTSA

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

OKC113-102225-
/O.CAN.KTSA.SV.W.0119.000000T0000Z-210710T2230Z/
Osage OK-
516 PM CDT Sat Jul 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OSAGE COUNTY 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
northeastern Oklahoma.

LAT...LON 3679 9546 3668 9600 3700 9600 3700 9578
TIME...MOT...LOC 2215Z 312DEG 28KT 3678 9578 3672 9602 

$$

OKC105-147-102230-
/O.CON.KTSA.SV.W.0119.000000T0000Z-210710T2230Z/
Washington OK-Nowata OK-
516 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTHERN WASHINGTON AND NORTHERN NOWATA COUNTIES...

At 515 PM CDT, severe thunderstorms were located along a line
extending from 7 miles west of Delaware to 2 miles south of
Bartlesville Municipal Airport, moving southeast at 30 mph.

HAZARD...70 mph wind gusts and penny 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...
Bartlesville...                   Dewey...
Copan...                          Delaware...
Lenapah...                        Wann...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3679 9546 3668 9600 3700 9600 3700 9578
TIME...MOT...LOC 2215Z 312DEG 28KT 3678 9578 3672 9602 

HAIL...0.75IN
WIND...70MPH
 
$$

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 11:00 AM CDT	Special Weather Statement	TSA	Delaware	30 min
Jul 10, 4:14 PM CDT	Severe Thunderstorm Warning	TSA	Osage	46 min
Jul 10, 4:24 PM CDT	Special Weather Statement	TSA	Washington	36 min
Jul 10, 5:09 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Rogers, Washington	51 min
Jul 10, 5:16 PM CDT	Areal Flood Advisory	TSA	Nowata, Osage, Washington	3 hr
Jul 10, 5:27 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Washington	48 min
Jul 10, 5:41 PM CDT	Flash Flood Warning	TSA	Nowata, Osage, Washington	3 hr
Jul 10, 5:49 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Nowata, Rogers	41 min
Jul 10, 5:52 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	38 min
Jul 10, 6:06 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee, Rogers, Tulsa, Washington	39 min
Jul 10, 6:19 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Mayes, Rogers, Wagoner	41 min
Jul 10, 6:24 PM CDT	Special Weather Statement	TSA	Pawnee	36 min
Jul 10, 6:34 PM CDT	Areal Flood Advisory	TSA	Nowata, Osage, Pawnee, Rogers, Tulsa, Washington	3 hr
Jul 10, 6:40 PM CDT	Special Weather Statement	TSA	Pawnee, Tulsa	50 min
Jul 10, 6:43 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Wagoner	47 min
Jul 10, 6:47 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Osage, Rogers, Tulsa, Wagoner, Washington	43 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.