Alert archive / Oklahoma / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 423

June 19, 200716 counties in Kansas; 44 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2007, 4:52 PM CDT for 16 counties in Kansas; 44 counties in Oklahoma. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2007, 4:52 PM CDT (21:52 UTC)
Expired: Jun 20, 2007, 12:00 AM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 60 kt

All 60 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Grant County, KS, Hamilton County, KS, Harper County, KS, Haskell County, KS, Kingman County, KS, Kiowa County, KS, Meade County, KS, Morton County, KS, Pratt County, KS, Seward County, KS, Stanton County, KS, Stevens County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland 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, Grant County, OK, Greer County, OK, Harper County, OK, Haskell County, OK, Hughes County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Latimer County, OK, LeFlore County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, McIntosh County, OK, Noble County, OK, Okfuskee County, OK, Oklahoma County, OK, Okmulgee County, OK, Pawnee County, OK, Payne County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Roger Mills County, OK, Seminole County, OK, Washita County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 89 km from the middle of the area, began a volume at 21:54 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: 20%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 50%
One or more hailstones of 2 inches or more: 30%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 19, 4:52 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	38 min
Jun 19, 4:53 PM CDT	Severe Thunderstorm Warning	DDC	Barber	67 min
Jun 19, 5:12 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	78 min
Jun 19, 5:27 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	48 min
Jun 19, 5:41 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	49 min
Jun 19, 6:09 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	66 min
Jun 19, 6:16 PM CDT	Severe Thunderstorm Warning	OUN	Woods	59 min
Jun 19, 6:26 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	64 min
Jun 19, 6:38 PM CDT	Severe Thunderstorm Warning	DDC	Barber	52 min
Jun 19, 6:38 PM CDT	Severe Thunderstorm Warning	OUN	Major	67 min
Jun 19, 6:39 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Kearny	81 min
Jun 19, 6:48 PM CDT	Severe Thunderstorm Warning	DDC	Pratt	57 min
Jun 19, 6:52 PM CDT	Severe Thunderstorm Warning	ICT	Harper, Kingman	53 min
Jun 19, 7:13 PM CDT	Severe Thunderstorm Warning	OUN	Woods	47 min
Jun 19, 7:16 PM CDT	Tornado Warning	DDC	Grant	44 min
Jun 19, 7:16 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa	44 min
Jun 19, 7:32 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	43 min
Jun 19, 7:33 PM CDT	Severe Thunderstorm Warning	DDC	Barber	57 min
Jun 19, 7:40 PM CDT	Severe Thunderstorm Warning	ICT	Harper, Kingman	46 min
Jun 19, 7:40 PM CDT	Severe Thunderstorm Warning	OUN	Major	65 min
Jun 19, 7:54 PM CDT	Tornado Warning	DDC	Grant	36 min
Jun 19, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	60 min
Jun 19, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	60 min
Jun 19, 8:05 PM CDT	Severe Thunderstorm Warning	DDC	Clark, Ford, Meade	70 min
Jun 19, 8:10 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	50 min
Jun 19, 8:14 PM CDT	Severe Thunderstorm Warning	DDC	Kiowa	33 min
Jun 19, 8:18 PM CDT	Severe Thunderstorm Warning	DDC	Grant	57 min
Jun 19, 8:24 PM CDT	Tornado Warning	DDC	Stevens	51 min
Jun 19, 8:43 PM CDT	Severe Thunderstorm Warning	DDC	Morton, Stanton, Stevens	64 min
Jun 19, 8:44 PM CDT	Severe Thunderstorm Warning	OUN	Major	46 min
Jun 19, 8:50 PM CDT	Severe Thunderstorm Warning	DDC	Stevens	39 min
Jun 19, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	50 min
Jun 19, 8:55 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	65 min
Jun 19, 8:58 PM CDT	Severe Thunderstorm Warning	OUN	Garfield	47 min
Jun 19, 9:00 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	45 min
Jun 19, 9:01 PM CDT	Severe Thunderstorm Warning	DDC	Seward	28 min
Jun 19, 9:01 PM CDT	Tornado Warning	DDC	Stevens	29 min
Jun 19, 9:05 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	40 min
Jun 19, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Harper	51 min
Jun 19, 9:15 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	45 min
Jun 19, 9:21 PM CDT	Severe Thunderstorm Warning	DDC	Clark	28 min
Jun 19, 9:22 PM CDT	Severe Thunderstorm Warning	OUN	Custer	38 min
Jun 19, 9:28 PM CDT	Severe Thunderstorm Warning	OUN	Logan	47 min
Jun 19, 9:42 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	33 min
Jun 19, 9:45 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	15 min
Jun 19, 9:55 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer	50 min
Jun 19, 10:09 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	51 min
Jun 19, 10:10 PM CDT	Severe Thunderstorm Warning	DDC	Morton	25 min
Jun 19, 10:12 PM CDT	Severe Thunderstorm Warning	OUN	Logan	46 min
Jun 19, 10:59 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	16 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

Lamont, OK (KLMN), launched 12:00Z, 9.9 hours before the alert went out and 143 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: 3367 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -25 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.3

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 19, 12:59 PM CDT	Mesoscale Discussion	SPC	Cheyenne, Decatur, Ellis, Finney, Gove, Graham and 17 more	61 min
Jun 19, 1:13 PM CDT	Tornado Watch	SPC	Barton, Decatur, Edwards, Ellis, Finney, Ford and 23 more	8 hr
Jun 19, 3:31 PM CDT	Mesoscale Discussion	SPC	Hamilton, Morton, Stanton, Stevens	89 min
Jun 19, 4:37 PM CDT	Mesoscale Discussion	SPC	Barber, Clark, Comanche, Harper, Kingman, Kiowa and 2 more	23 min
Jun 19, 5:24 PM CDT	Mesoscale Discussion	SPC	Barton, Cheyenne, Edwards, Finney, Ford, Gove and 22 more	66 min
Jun 19, 3:41 PM CDT	Mesoscale Discussion	SPC	Latimer, LeFlore, McCurtain, Pushmataha	64 min
Jun 19, 5:22 PM CDT	Severe Thunderstorm Watch	SPC	Beaver, Cimarron, Texas	9 hr

Nearby

Severe Thunderstorm Watches in Oklahoma, 2007 Severe Thunderstorm Watches in Kansas, 2007 Every severe thunderstorm watch in 2007

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.