Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 120, NWS Tulsa, OK

July 10, 20214 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Jul 10, 2021, 5:09 PM CDT for 4 counties in Oklahoma. It was in force for 51 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, 5:09 PM CDT (22:09 UTC)
Expired: Jul 10, 2021, 6:00 PM CDT
In force: 51 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Craig County, OK, Nowata County, OK, Rogers County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 52 km from the middle of the area, began a volume at 22:10 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, 10.2 hours before the alert went out and 160 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.

177 
WUUS54 KTSA 102209
SVRTSA
OKC035-105-131-147-102300-
/O.NEW.KTSA.SV.W.0120.210710T2209Z-210710T2300Z/

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

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Southern Craig County in northeastern Oklahoma...
  Northern Rogers County in northeastern Oklahoma...
  Central Washington County in northeastern Oklahoma...
  Nowata County in northeastern Oklahoma...

* Until 600 PM CDT.

* At 509 PM CDT, severe thunderstorms were located along a line
  extending from 4 miles southeast of Wann to 5 miles southeast of
  Dewey to 3 miles southwest of Bartlesville, moving southeast at 45
  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...                   Vinita...
  Nowata...                         Chelsea...
  Oologah...                        Ramona...
  Ochelata...                       Delaware...
  Foyil...                          Lenapah...
  Talala...                         New Alluwe...
  Watova...                         White Oak...
  Centrailia...                     Bushyhead...
  Centralia...                      

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3676 9507 3651 9527 3651 9543 3645 9544
      3636 9572 3657 9600 3674 9600 3678 9590
      3695 9575
TIME...MOT...LOC 2209Z 293DEG 38KT 3687 9574 3676 9584 3670 9602 

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

Lacy

1 follow-up statement

001 
WWUS54 KTSA 102228
SVSTSA

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

OKC035-105-131-147-102300-
/O.CON.KTSA.SV.W.0120.000000T0000Z-210710T2300Z/
Craig OK-Rogers OK-Washington OK-Nowata OK-
528 PM CDT Sat Jul 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHWESTERN CRAIG...NORTHERN ROGERS...SOUTHERN WASHINGTON AND
SOUTHERN NOWATA COUNTIES...

At 528 PM CDT, severe thunderstorms were located along a line
extending from 2 miles northeast of Nowata to 3 miles west of Watova
to 2 miles northeast of Ramona, 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...
Bartlesville...                   Nowata...
Chelsea...                        Oologah...
Ramona...                         Ochelata...
Delaware...                       Foyil...
Lenapah...                        Talala...
New Alluwe...                     Watova...
White Oak...                      Bushyhead...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3668 9522 3651 9527 3651 9543 3645 9544
      3636 9572 3657 9600 3674 9600 3678 9590
      3687 9564
TIME...MOT...LOC 2228Z 326DEG 27KT 3673 9562 3662 9572 3656 9590 

HAIL...0.88IN
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, 4:43 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Washington	47 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.