Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 161, NWS Tulsa, OK

October 10, 20215 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Oct 10, 2021, 9:36 PM CDT for 5 counties in Oklahoma. It was in force for 54 min. 5 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: Oct 10, 2021, 9:36 PM CDT (02:36 UTC)
Expired: Oct 10, 2021, 10:30 PM CDT
In force: 54 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.88 in
Wind: 70.0 mph

Counties Creek County, OK, McIntosh County, OK, Okfuskee County, OK, Okmulgee County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 59 km from the middle of the area, began a volume at 02:35 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
Oct 10, 9:47 PM CDT	TSTM WND GST 60	5 S Bristow, OK
Oct 10, 10:03 PM CDT	TORNADO	1 S Beggs, OK	AN EF0 TORNADO TOUCHED DOWN ON THE SOUTH SIDE OF BEGGS AT APPROXIMATELY 10:03PM. THIS TORNADO CONTINUED NORTHEAST A SHORT DISTANCE BEFORE LIFTING ON THE EAST SIDE OF BEGGS. THIS TORNADO DAMAGED MULTIPLE TREES AND CAUSED MINOR ROOF DAMAGE TO SEVERAL HOMES. MORE
Oct 10, 10:07 PM CDT	TSTM WND DMG	3 Nw Preston, OK	LARGE LIMBS DOWN.
Oct 10, 10:25 PM CDT	TSTM WND GST 73	Beggs, OK	CORRECTS PREVIOUS NON-TSTM WND GST REPORT FROM BEGGS. 73 MPH WIND GUST REPORTED, WITH POWER LINES DOWN NEAR BEGGS.
Oct 10, 10:25 PM CDT	NON-TSTM WND GST 73	Beggs, OK	73 MPH WIND GUST REPORTED, WITH POWER LINES DOWN NEAR BEGGS.

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
Oct 10, 3:22 PM CDT	Tornado Watch	SPC	7 hr
Oct 10, 9:24 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.6 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: 1436 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1199 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 8.8

Open this sounding in Storm Lab

The text

As transmitted.

865 
WUUS54 KTSA 110236
SVRTSA
OKC037-091-107-111-143-110330-
/O.NEW.KTSA.SV.W.0161.211011T0236Z-211011T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
936 PM CDT Sun Oct 10 2021

The National Weather Service in Tulsa has issued a

* Severe Thunderstorm Warning for...
  Creek County in northeastern Oklahoma...
  Northwestern McIntosh County in southeastern Oklahoma...
  Okmulgee County in northeastern Oklahoma...
  Southern Tulsa County in northeastern Oklahoma...
  Okfuskee County in east central Oklahoma...

* Until 1030 PM CDT.

* At 935 PM CDT, severe thunderstorms were located along a line
  extending from 8 miles east of Drumright to 4 miles northeast of
  Castle to 5 miles north of Wewoka, moving northeast at 45 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...
  Tulsa...                          Broken Arrow...
  Sand Springs...                   Okmulgee...
  Bristow...                        Okemah...
  Bixby...                          Sapulpa...
  Jenks...                          Okfuskee...
  Glenpool...                       Henryetta...
  Kiefer...                         Morris...
  Beggs...                          Mounds...
  Kellyville...                     Weleetka...
  Dewar...                          Schulter...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 213 and 253.
 Interstate 44 between mile markers 187 and 229.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for northeastern
and east central Oklahoma. A Tornado Watch also remains in effect
until 200 AM CDT for southeastern, northeastern and east central
Oklahoma.

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

&&

LAT...LON 3604 9652 3616 9576 3590 9576 3590 9582
      3586 9582 3585 9577 3573 9577 3572 9574
      3567 9571 3528 9572 3529 9644 3547 9639
TIME...MOT...LOC 0235Z 234DEG 37KT 3598 9645 3552 9633 3523 9648 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

2 follow-up statements

428 
WWUS54 KTSA 110258
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
958 PM CDT Sun Oct 10 2021

OKC037-091-107-111-143-110330-
/O.CON.KTSA.SV.W.0161.000000T0000Z-211011T0330Z/
Creek OK-McIntosh OK-Okmulgee OK-Tulsa OK-Okfuskee OK-
958 PM CDT Sun Oct 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR EASTERN CREEK...NORTHWESTERN MCINTOSH...OKMULGEE...SOUTHERN TULSA
AND OKFUSKEE COUNTIES...

At 958 PM CDT, severe thunderstorms were located along a line
extending from 5 miles southwest of Sand Springs to Okmulgee State
Park to 3 miles west of Weleetka, moving northeast at 45 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...
Tulsa...                          Broken Arrow...
Sand Springs...                   Okmulgee...
Okemah...                         Bixby...
Sapulpa...                        Jenks...
Okfuskee...                       Glenpool...
Henryetta...                      Kiefer...
Morris...                         Beggs...
Mounds...                         Kellyville...
Weleetka...                       Dewar...
Schulter...                       Grayson...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 214 and 253.
 Interstate 44 between mile markers 194 and 229.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 1000 PM CDT for northeastern
and east central Oklahoma. A Tornado Watch also remains in effect
until 200 AM CDT for southeastern, northeastern and east central
Oklahoma.

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

&&

LAT...LON 3606 9637 3616 9576 3590 9576 3590 9582
      3586 9582 3585 9577 3573 9577 3572 9574
      3567 9571 3528 9572 3529 9644 3564 9634
TIME...MOT...LOC 0258Z 244DEG 41KT 3607 9617 3561 9605 3533 9620 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

982 
WWUS54 KTSA 110312
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1012 PM CDT Sun Oct 10 2021

OKC037-091-107-111-143-110330-
/O.CON.KTSA.SV.W.0161.000000T0000Z-211011T0330Z/
Creek OK-McIntosh OK-Okmulgee OK-Tulsa OK-Okfuskee OK-
1012 PM CDT Sun Oct 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR NORTHEASTERN CREEK...NORTHWESTERN MCINTOSH...OKMULGEE...SOUTHERN
TULSA AND EASTERN OKFUSKEE COUNTIES...

At 1012 PM CDT, severe thunderstorms were located along a line
extending from 4 miles east of Sand Springs to 4 miles east of
Preston to 2 miles east of Weleetka, moving northeast at 45 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...
Tulsa...                          Broken Arrow...
Sand Springs...                   Okmulgee...
Bixby...                          Sapulpa...
Jenks...                          Glenpool...
Henryetta...                      Kiefer...
Morris...                         Beggs...
Mounds...                         Weleetka...
Dewar...                          Schulter...
Grayson...                        Hoffman...
Clearview...                      Preston...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 221 and 253.
 Interstate 44 between mile markers 207 and 229.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 200 AM CDT for southeastern,
northeastern and east central Oklahoma.

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

&&

LAT...LON 3609 9618 3616 9576 3590 9576 3590 9582
      3586 9582 3585 9577 3573 9577 3572 9574
      3567 9571 3528 9572 3530 9635 3564 9618
TIME...MOT...LOC 0312Z 233DEG 37KT 3615 9603 3569 9591 3534 9608 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 8:04 PM CDT	Flash Flood Warning	TSA	Osage, Pawnee	4 hr
Oct 10, 8:05 PM CDT	Special Weather Statement	TSA	Pawnee	55 min
Oct 10, 8:21 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	54 min
Oct 10, 8:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Creek, Okfuskee	64 min
Oct 10, 9:17 PM CDT	Special Weather Statement	TSA	Osage	58 min
Oct 10, 9:28 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	24 min
Oct 10, 9:55 PM CDT	Special Weather Statement	TSA	Osage	50 min
Oct 10, 10:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	McIntosh, Pittsburg	59 min
Oct 10, 10:05 PM CDT	Tornado Warning	TSA	Okmulgee, Tulsa, Wagoner	25 min
Oct 10, 10:09 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	36 min
Oct 10, 10:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	McIntosh, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	56 min
Oct 10, 10:21 PM CDT	Tornado Warning	TSA	McIntosh, Pittsburg	39 min
Oct 10, 10:29 PM CDT	Tornado Warning	TSA	Tulsa, Wagoner	46 min
Oct 10, 10:41 PM CDT	Areal Flood Advisory	TSA	Cherokee, Haskell, McIntosh, Muskogee, Okfuskee, Okmulgee and 3 more	3 hr
Oct 10, 10:41 PM CDT	Tornado Warning	TSA	McIntosh, Muskogee, Okmulgee	34 min
Oct 10, 10:43 PM CDT	Tornado Warning	TSA	Wagoner	32 min
Oct 10, 10:53 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, Pittsburg, Pushmataha	67 min
Oct 10, 10:56 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Cherokee, Delaware, McIntosh, Mayes, Muskogee, Rogers and 1 more	64 min
Oct 10, 10:58 PM CDT	Tornado Warning	TSA	Haskell, McIntosh, Muskogee, Pittsburg	47 min
Oct 10, 11:05 PM CDT	Tornado Warning	TSA	Mayes, Rogers, Wagoner	40 min
Oct 10, 11:33 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee, Sequoyah	42 min
Oct 10, 11:43 PM CDT	Areal Flood Advisory	TSA	Latimer, LeFlore, Pushmataha	70 min
Oct 10, 11:48 PM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Delaware, Mayes	110 min
Oct 10, 11:55 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Ottawa	50 min
Oct 11, 12:07 AM CDT	Tornado Warning	TSA	Adair, Cherokee	38 min
Oct 11, 12:09 AM CDT	Tornado Warning	TSA	Delaware	39 min
Oct 11, 1:18 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	42 min
Oct 11, 1:26 AM CDT	Special Weather Statement	TSA	Creek, Tulsa	49 min
Oct 11, 1:34 AM CDT	Areal Flood Advisory	TSA	Creek, Osage, Pawnee	116 min
Oct 11, 1:37 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee	33 min
Oct 11, 2:02 AM CDT	Special Weather Statement	TSA	Rogers, Tulsa, Wagoner, Washington	43 min
Oct 11, 2:09 AM CDT	Special Weather Statement	TSA	Washington	51 min
Oct 11, 2:34 AM CDT	Special Weather Statement	TSA	Craig, Delaware, Mayes, Nowata, Ottawa	56 min
Oct 11, 3:27 AM CDT	Special Weather Statement	TSA	Ottawa	48 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.