Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 121, NWS Tulsa, OK

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

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 5:27 PM CDT for Nowata County, Osage County, Washington County, Oklahoma. It was in force for 48 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, 5:27 PM CDT (22:27 UTC)
Expired: Jul 10, 2021, 6:15 PM CDT
In force: 48 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), 77 km from the middle of the area, began a volume at 22:29 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 12:00Z, 10.5 hours before the alert went out and 203 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.

188 
WUUS54 KTSA 102227
SVRTSA
OKC105-113-147-102315-
/O.NEW.KTSA.SV.W.0121.210710T2227Z-210710T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
527 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...
  Central Washington County in northeastern Oklahoma...
  Southern Nowata County in northeastern Oklahoma...

* Until 615 PM CDT.

* At 526 PM CDT, severe thunderstorms were located along a line
  extending from 4 miles northeast of Osage Hills State Park to 4
  miles north of Pawhuska to 4 miles east of Shidler, moving east at
  25 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...                   Nowata...
  Pawhuska...                       Dewey...
  Barnsdall...                      Shidler...
  Wynona...                         Ochelata...
  Delaware...                       Bigheart...
  Pearsonia...                      Bartlesville Municipal Airport...
  Sunset Lake...                    Osage Hills State Park...
  Okesa...                          Tallant...
  Pershing...                       Nelagoney...
  Wolco...                          

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3680 9546 3653 9598 3648 9637 3683 9671
      3682 9634 3689 9614
TIME...MOT...LOC 2226Z 278DEG 23KT 3680 9615 3673 9635 3678 9658 

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

Lacy

1 follow-up statement

228 
WWUS54 KTSA 102251
SVSTSA

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

OKC105-113-147-102315-
/O.CON.KTSA.SV.W.0121.000000T0000Z-210710T2315Z/
Osage OK-Washington OK-Nowata OK-
551 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM CDT
FOR EAST CENTRAL OSAGE...CENTRAL WASHINGTON AND SOUTHWESTERN NOWATA
COUNTIES...

At 550 PM CDT, severe thunderstorms were located along a line
extending from 2 miles south of Okesa to near Pawhuska, moving
southeast at 40 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...
Barnsdall...                      Wynona...
Ochelata...                       Osage Hills State Park...
Bartlesville Municipal Airport... Okesa...
Pershing...                       Nelagoney...
Tallant...                        Wolco...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3653 9598 3648 9637 3670 9658 3674 9630
      3682 9601 3669 9567
TIME...MOT...LOC 2250Z 304DEG 36KT 3668 9615 3665 9632 

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

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, 4:43 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Washington	47 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, 5:41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.