Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 125, NWS Tulsa, OK

July 10, 20214 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 6:19 PM CDT for 4 counties in Oklahoma. It was in force for 41 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, 6:19 PM CDT (23:19 UTC)
Expired: Jul 10, 2021, 7:00 PM CDT
In force: 41 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 0.88 in
Wind: 60.0 mph

Counties Cherokee County, OK, Mayes County, OK, Rogers County, OK, Wagoner County, OK

The radar

The Tulsa radar (KINX), 36 km from the middle of the area, began a volume at 23:19 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, 6:25 PM CDT	TSTM WND DMG	Pryor, OK	LARGE METAL STRUCTURE DAMAGED.
Jul 10, 6:27 PM CDT	TSTM WND DMG	1 Nw Adair, OK	POWER POLE SNAPPED.

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, 11.3 hours before the alert went out and 142 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.

030 
WUUS54 KTSA 102319
SVRTSA
OKC021-097-131-145-110000-
/O.NEW.KTSA.SV.W.0125.210710T2319Z-210711T0000Z/

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

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southeastern Rogers County in northeastern Oklahoma...
  Mayes County in northeastern Oklahoma...
  Northeastern Wagoner County in northeastern Oklahoma...
  Northwestern Cherokee County in east central Oklahoma...

* Until 700 PM CDT.

* At 619 PM CDT, severe thunderstorms were located along a line
  extending from 2 miles southwest of Adair to 2 miles northeast of
  Taiwah, moving southeast at 30 mph.

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

  SOURCE...Radar indicated.

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

* Locations in or near the path include...
  Claremore...                      Wagoner...
  Pryor...                          Pryor Creek...
  Chouteau...                       Inola...
  Locust Grove...                   Salina...
  Adair...                          Hoot Owl...
  Peggs...                          Rose...
  Sportsmen Acres Community...      Taiwah...
  Tiawah...                         Mazie...
  Snowdale State Park...            Murphy...

This includes Interstate 44 between mile markers 246 and 272.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3628 9500 3625 9501 3616 9501 3616 9492
      3587 9544 3631 9566 3651 9529 3651 9527
TIME...MOT...LOC 2319Z 331DEG 28KT 3641 9529 3628 9550 

TORNADO...POSSIBLE
HAIL...0.88IN
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, 5:27 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, 6:24 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.