Alert archive / Oklahoma / Tornado Watches in 2010

Tornado Watch 190

May 19, 201056 counties in Oklahoma

The Storm Prediction Center issued this tornado watch at May 19, 2010, 2:06 PM CDT for 56 counties in Oklahoma. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: May 19, 2010, 2:06 PM CDT (19:06 UTC)
Expired: May 19, 2010, 10:00 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Particularly dangerous situation: Yes
Largest hail expected: 3.5 in
Strongest gust expected: 60 kt

All 56 counties

Atoka County, OK, Beckham County, OK, Blaine County, OK, Bryan County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Cleveland County, OK, Coal County, OK, Comanche County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Johnston County, OK, Kingfisher County, OK, Kiowa County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, Marshall County, OK, Mayes County, OK, McClain County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Roger Mills County, OK, Rogers County, OK, Seminole County, OK, Sequoyah County, OK, Stephens County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK, Washita County, OK, Woodward County, OK

The radar

The Norman radar (KTLX), 59 km from the middle of the area, began a volume at 19:06 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: 95%
One or more EF2 to EF5 tornadoes: 60%
Ten or more severe wind reports: 80%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 95%
One or more hailstones of 2 inches or more: 70%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 19, 3:12 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills	63 min
May 19, 3:26 PM CDT	Tornado Warning	OUN	Blaine, Kingfisher	34 min
May 19, 3:26 PM CDT	Tornado Warning	OUN	Dewey, Roger Mills	49 min
May 19, 3:42 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	63 min
May 19, 3:56 PM CDT	Tornado Warning	OUN	Garfield, Kingfisher	49 min
May 19, 4:09 PM CDT	Tornado Warning	OUN	Dewey	51 min
May 19, 4:41 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Woodward	64 min
May 19, 4:41 PM CDT	Tornado Warning	OUN	Garfield, Kingfisher, Logan	49 min
May 19, 4:52 PM CDT	Tornado Warning	OUN	Blaine, Dewey	38 min
May 19, 5:08 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	47 min
May 19, 5:22 PM CDT	Tornado Warning	OUN	Kingfisher	53 min
May 19, 5:26 PM CDT	Tornado Warning	OUN	Garfield, Logan, Noble, Payne	64 min
May 19, 6:13 PM CDT	Tornado Warning	OUN	Kingfisher, Logan	47 min
May 19, 6:15 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	60 min
May 19, 6:21 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	24 min
May 19, 6:24 PM CDT	Tornado Warning	OUN	Payne	66 min
May 19, 6:24 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	66 min
May 19, 6:25 PM CDT	Tornado Warning	OUN	Lincoln	37 min
May 19, 6:30 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	60 min
May 19, 6:49 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Grady, Stephens	56 min
May 19, 6:52 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Pawnee	53 min
May 19, 6:53 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	37 min
May 19, 6:55 PM CDT	Tornado Warning	OUN	Cleveland, Grady, McClain, Pottawatomie	50 min
May 19, 6:56 PM CDT	Tornado Warning	TSA	Latimer, LeFlore, Pushmataha	54 min
May 19, 6:59 PM CDT	Tornado Warning	OUN	Lincoln, Logan	46 min
May 19, 7:01 PM CDT	Tornado Warning	TSA	Creek, Pawnee	44 min
May 19, 7:02 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	58 min
May 19, 7:03 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okmulgee, Pittsburg	57 min
May 19, 7:08 PM CDT	Tornado Warning	OUN	Lincoln, Oklahoma, Pottawatomie	52 min
May 19, 7:22 PM CDT	Tornado Warning	TSA	Creek, Okmulgee, Tulsa, Wagoner	53 min
May 19, 7:26 PM CDT	Tornado Warning	OUN	Garvin, Stephens	49 min
May 19, 7:29 PM CDT	Severe Thunderstorm Warning	OUN	Payne	61 min
May 19, 7:32 PM CDT	Tornado Warning	OUN	Cleveland, McClain, Pottawatomie	43 min
May 19, 7:35 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore	55 min
May 19, 7:41 PM CDT	Tornado Warning	TSA	Creek, Osage, Pawnee	49 min
May 19, 7:42 PM CDT	Tornado Warning	OUN	Lincoln	42 min
May 19, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Logan	45 min
May 19, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Pottawatomie, Seminole	45 min
May 19, 7:49 PM CDT	Flash Flood Warning	TSA	Creek	6 hr
May 19, 7:53 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods, Woodward	67 min
May 19, 7:58 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee, Tulsa	62 min
May 19, 8:01 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, McIntosh, Muskogee, Sequoyah, Wagoner	59 min
May 19, 8:10 PM CDT	Tornado Warning	TSA	Creek	50 min
May 19, 8:11 PM CDT	Severe Thunderstorm Warning	OUN	Garvin, Murray	64 min
May 19, 8:13 PM CDT	Tornado Warning	TSA	Creek, Muskogee, Okmulgee, Tulsa, Wagoner	47 min
May 19, 8:14 PM CDT	Flash Flood Warning	TSA	Tulsa	6 hr
May 19, 8:15 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	45 min
May 19, 8:15 PM CDT	Tornado Warning	OUN	Lincoln	30 min
May 19, 8:24 PM CDT	Tornado Warning	TSA	Creek, Okfuskee	54 min
May 19, 8:29 PM CDT	Severe Thunderstorm Warning	OUN	Pottawatomie, Seminole	46 min
May 19, 8:30 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	30 min
May 19, 8:33 PM CDT	Tornado Warning	OUN	Garvin, Murray, Pontotoc	42 min
May 19, 8:47 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	58 min
May 19, 8:50 PM CDT	Flash Flood Warning	TSA	Rogers, Wagoner	6 hr
May 19, 8:54 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Mayes, Muskogee, Okmulgee, Osage, Rogers and 2 more	66 min
May 19, 8:57 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee	18 min
May 19, 8:57 PM CDT	Tornado Warning	TSA	Rogers, Tulsa, Wagoner	48 min
May 19, 8:59 PM CDT	Severe Thunderstorm Warning	OUN	Hughes, Pottawatomie, Seminole	61 min
May 19, 9:00 PM CDT	Severe Thunderstorm Warning	TSA	Creek, McIntosh, Okfuskee, Okmulgee, Pittsburg	60 min
May 19, 9:07 PM CDT	Tornado Warning	TSA	McIntosh, Okfuskee, Okmulgee	23 min
May 19, 9:10 PM CDT	Tornado Warning	OUN	Garvin, Murray, Pontotoc	65 min
May 19, 9:23 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee, Okfuskee, Okmulgee	67 min
May 19, 9:28 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee	62 min
May 19, 9:40 PM CDT	Tornado Warning	TSA	Cherokee, Delaware, Mayes, Rogers, Wagoner	50 min
May 19, 9:47 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Muskogee, Sequoyah and 1 more	58 min
May 19, 9:58 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	45 min

Discussions around it

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

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 7.1 hours before the alert went out and 53 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: 730 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 486 m²/s²
0-3 km storm-relative helicity: 575 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 18, 7:41 PM CDT	Mesoscale Discussion	SPC	Cimarron, Texas	64 min
May 18, 9:27 PM CDT	Mesoscale Discussion	SPC	Beckham, Custer, Dewey, Ellis, Greer, Harmon and 6 more	93 min
May 18, 10:36 PM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Dewey, Ellis, Harper, Roger Mills and 2 more	54 min
May 18, 10:49 PM CDT	Tornado Watch	SPC	Beaver, Beckham, Cimarron, Custer, Dewey, Ellis and 7 more	5 hr
May 19, 1:24 AM CDT	Mesoscale Discussion	SPC	Beaver, Beckham, Cimarron, Custer, Dewey, Ellis and 6 more	66 min
May 19, 3:23 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Blaine, Creek, Custer, Dewey, Ellis and 13 more	67 min
May 19, 3:42 AM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beaver, Blaine, Creek, Custer, Dewey and 25 more	6 hr
May 19, 5:32 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Creek, Dewey, Garfield, Grant, Kay and 7 more	58 min
May 19, 1:22 PM CDT	Mesoscale Discussion	SPC	Atoka, Beckham, Blaine, Bryan, Caddo, Canadian and 43 more	113 min
May 19, 3:20 PM CDT	Mesoscale Discussion	SPC	Atoka, Beckham, Blaine, Bryan, Caddo, Canadian and 43 more	85 min
May 19, 5:30 PM CDT	Mesoscale Discussion	SPC	Atoka, Caddo, Canadian, Cleveland, Coal, Comanche and 31 more	60 min

Nearby

Tornado Watches in Oklahoma, 2010 Every tornado watch in 2010

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.