Alert archive / Oklahoma / Tornado Watches in 2021

Tornado Watch 517

October 10, 202139 counties in Oklahoma; 8 counties in Texas

The Storm Prediction Center issued this tornado watch at Oct 10, 2021, 3:22 PM CDT for 39 counties in Oklahoma; 8 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Oct 10, 2021, 3:22 PM CDT (20:22 UTC)
Expired: Oct 10, 2021, 10:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2.5 in
Strongest gust expected: 75 kt

All 47 counties

Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Custer County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Nowata County, OK, Okfuskee County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Tulsa County, OK, Washington County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX

The radar

The Altus AFB radar (KFDR), 108 km from the middle of the area, began a volume at 20:25 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 90%
One or more EF2 to EF5 tornadoes: 70%
Ten or more severe wind reports: 90%
One or more gusts of 65 knots or more: 70%
Ten or more severe hail reports: 70%
One or more hailstones of 2 inches or more: 60%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

33 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Oct 10, 5:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Jackson, Kiowa	51 min
Oct 10, 5:39 PM CDT	Tornado Warning	OUN	Comanche, Kiowa	51 min
Oct 10, 5:46 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	29 min
Oct 10, 6:05 PM CDT	Severe Thunderstorm Warning Destructive damage threat	OUN	Caddo, Comanche, Kiowa, Washita	55 min
Oct 10, 6:14 PM CDT	Tornado Warning	OUN	Caddo, Kiowa	46 min
Oct 10, 6:23 PM CDT	Severe Thunderstorm Warning	OUN	Cotton	52 min
Oct 10, 6:47 PM CDT	Severe Thunderstorm Warning	TSA	Osage	58 min
Oct 10, 6:51 PM CDT	Severe Thunderstorm Warning	OUN	Kay	39 min
Oct 10, 6:53 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Comanche, Cotton, Jefferson, Stephens, Tillman	52 min
Oct 10, 6:53 PM CDT	Tornado Warning Tornado observed	OUN	Caddo, Grady	52 min
Oct 10, 6:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Caddo, Canadian, Comanche, Grady	48 min
Oct 10, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	43 min
Oct 10, 7:05 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	40 min
Oct 10, 7:18 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan, Noble, Payne	42 min
Oct 10, 7:24 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	51 min
Oct 10, 7:25 PM CDT	Flash Flood Warning	OUN	Caddo, Canadian, Cleveland, Grady, McClain, Oklahoma	107 min
Oct 10, 7:33 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Cotton, Garvin, Jefferson, Stephens	42 min
Oct 10, 7:43 PM CDT	Tornado Warning	OUN	Cleveland, McClain	47 min
Oct 10, 7:47 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Love	28 min
Oct 10, 8:04 PM CDT	Flash Flood Warning	TSA	Osage, Pawnee	4 hr
Oct 10, 8:14 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Jefferson, Murray, Stephens	46 min
Oct 10, 8:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OUN	Cleveland, Lincoln, McClain, Oklahoma, Pottawatomie, Seminole	59 min
Oct 10, 8:21 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	54 min
Oct 10, 8:22 PM CDT	Tornado Warning	OUN	Lincoln, Oklahoma	23 min
Oct 10, 8:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Creek, Okfuskee	64 min
Oct 10, 8:43 PM CDT	Tornado Warning	OUN	Lincoln	25 min
Oct 10, 8:53 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Carter, Johnston, Love, Marshall	52 min
Oct 10, 8:56 PM CDT	Tornado Warning Tornado observed	OUN	Lincoln, Pottawatomie, Seminole	34 min
Oct 10, 8:59 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Coal, Garvin, Johnston, Murray, Pontotoc and 1 more	46 min
Oct 10, 9:17 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Lincoln, Payne, Pontotoc, Pottawatomie, Seminole	43 min
Oct 10, 9:28 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	24 min
Oct 10, 9:36 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Creek, McIntosh, Okfuskee, Okmulgee, Tulsa	54 min
Oct 10, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes, Pontotoc, Seminole	45 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 10, 2:04 PM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Comanche, Garfield, Grady and 13 more	116 min
Oct 10, 4:25 PM CDT	Mesoscale Discussion	SPC	Comanche, Cotton, Grady, McClain, Stephens, Tillman	95 min
Oct 10, 6:13 PM CDT	Tornado Watch	SPC	Atoka, Bryan, Coal, Hughes, Johnston, Marshall and 1 more	8 hr
Oct 10, 6:32 PM CDT	Mesoscale Discussion	SPC	Caddo, Canadian, Cleveland, Comanche, Grady, Lincoln and 5 more	118 min
Oct 10, 3:46 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Coleman, Eastland, Jack and 6 more	119 min

Nearby

Tornado Watches in Oklahoma, 2021 Tornado Watches in Texas, 2021 Every tornado watch 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; radar from the NEXRAD Level II archive.