Alert archive / Texas / Severe Thunderstorm Watches in 2020

Severe Thunderstorm Watch 285

June 19, 20205 counties in Oklahoma; 62 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2020, 4:07 PM CDT for 5 counties in Oklahoma; 62 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 19, 2020, 4:07 PM CDT (21:07 UTC)
Expired: Jun 20, 2020, 1:00 AM CDT
In force: 9 hr
Issued by: the Storm Prediction Center
Largest hail expected: 2 in
Strongest gust expected: 65 kt

All 67 counties

Cimarron County, OK, Cotton County, OK, Harmon County, OK, Jackson County, OK, Tillman County, OK, Andrews County, TX, Archer County, TX, Armstrong County, TX, Bailey County, TX, Baylor County, TX, Borden County, TX, Briscoe County, TX, Callahan County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Clay County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dallam County, TX, Dawson County, TX, Dickens County, TX, Donley County, TX, Ector County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Gaines County, TX, Garza County, TX, Glasscock County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hartley County, TX, Haskell County, TX, Hockley County, TX, Howard County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Moore County, TX, Motley County, TX, Nolan County, TX, Potter County, TX, Randall County, TX, Scurry County, TX, Shackelford County, TX, Sherman County, TX, Stonewall County, TX, Swisher County, TX, Taylor County, TX, Terry County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX, Yoakum County, TX

The radar

The Altus AFB radar (KFDR), 134 km from the middle of the area, began a volume at 21:08 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: 10%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 50%
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

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

Issued	Product	Office	Counties	Lasted
Jun 19, 4:07 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	38 min
Jun 19, 4:13 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	47 min
Jun 19, 4:14 PM CDT	Severe Thunderstorm Warning	MAF	Dawson, Gaines	61 min
Jun 19, 4:16 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	44 min
Jun 19, 4:24 PM CDT	Severe Thunderstorm Warning	LUB	Bailey, Lamb	36 min
Jun 19, 4:30 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	45 min
Jun 19, 4:35 PM CDT	Severe Thunderstorm Warning	LUB	Hockley, Lamb	40 min
Jun 19, 4:40 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	35 min
Jun 19, 4:43 PM CDT	Severe Thunderstorm Warning	OUN	Jackson, Tillman	62 min
Jun 19, 4:46 PM CDT	Severe Thunderstorm Warning	MAF	Crane, Ector, Ward, Winkler	59 min
Jun 19, 4:47 PM CDT	Severe Thunderstorm Warning	LUB	Lamb	43 min
Jun 19, 4:56 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Potter, Randall	49 min
Jun 19, 5:00 PM CDT	Severe Thunderstorm Warning	MAF	Andrews, Dawson, Gaines, Martin	60 min
Jun 19, 5:06 PM CDT	Severe Thunderstorm Warning	LUB	Hale, Hockley, Lamb, Lubbock	39 min
Jun 19, 5:10 PM CDT	Severe Thunderstorm Warning	MAF	Crane, Ector, Midland	65 min
Jun 19, 5:12 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson	33 min
Jun 19, 5:36 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	24 min
Jun 19, 5:41 PM CDT	Severe Thunderstorm Warning	LUB	Hale, Hockley, Lubbock	34 min
Jun 19, 5:44 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray, Potter, Randall	46 min
Jun 19, 5:44 PM CDT	Severe Thunderstorm Warning	MAF	Andrews, Ector, Martin, Midland	61 min
Jun 19, 5:58 PM CDT	Severe Thunderstorm Warning	MAF	Borden, Dawson, Howard, Martin	62 min
Jun 19, 5:59 PM CDT	Flash Flood Warning	AMA	Armstrong, Carson	3 hr
Jun 19, 6:27 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray	48 min
Jun 19, 6:57 PM CDT	Severe Thunderstorm Warning	MAF	Glasscock, Howard, Martin, Midland	63 min
Jun 19, 7:02 PM CDT	Severe Thunderstorm Warning	LUB	Crosby, Garza, Lubbock	58 min
Jun 19, 7:06 PM CDT	Severe Thunderstorm Warning	LUB	Crosby, Dickens, Motley	24 min
Jun 19, 7:15 PM CDT	Severe Thunderstorm Warning	MAF	Borden, Howard, Mitchell, Scurry	60 min
Jun 19, 7:16 PM CDT	Severe Thunderstorm Warning	AMA	Randall	29 min
Jun 19, 7:31 PM CDT	Severe Thunderstorm Warning	LUB	Cottle, Crosby, Dickens, Kent, King, Motley	29 min
Jun 19, 7:36 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	84 min
Jun 19, 7:40 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley	47 min
Jun 19, 7:56 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	64 min
Jun 19, 7:58 PM CDT	Severe Thunderstorm Warning	LUB	Cottle, Dickens, King, Motley	32 min
Jun 19, 8:01 PM CDT	Severe Thunderstorm Warning	MAF	Borden, Howard, Mitchell, Scurry	59 min
Jun 19, 8:08 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	67 min
Jun 19, 8:19 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	26 min
Jun 19, 8:28 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	62 min
Jun 19, 8:29 PM CDT	Severe Thunderstorm Warning	LUB	Dickens, King, Stonewall	31 min
Jun 19, 8:31 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Knox	74 min
Jun 19, 9:02 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	62 min
Jun 19, 9:29 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Nolan, Shackelford, Taylor	46 min
Jun 19, 10:56 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	64 min
Jun 19, 11:35 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Sherman	55 min
Jun 20, 12:45 AM CDT	Severe Thunderstorm Warning	LUB	Crosby, Dickens	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

Amarillo Airport, TX (KAMA), launched 12:00Z, 9.1 hours before the alert went out and 171 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: 544 J/kg
Mixed-layer CIN: -198 J/kg
Mixed-layer LCL: 1501 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: -3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, 5:57 PM CDT	Mesoscale Discussion	SPC	Cimarron	2 hr
Jun 19, 6:15 PM CDT	Mesoscale Discussion	SPC	Beckham, Greer, Harmon, Jackson, Tillman	2 hr
Jun 18, 8:01 PM CDT	Mesoscale Discussion	SPC	Borden, Callahan, Coke, Coleman, Concho, Crockett and 18 more	119 min
Jun 19, 3:18 PM CDT	Mesoscale Discussion	SPC	Bailey, Borden, Briscoe, Castro, Cochran, Cottle and 19 more	117 min

Nearby

Severe Thunderstorm Watches in Texas, 2020 Severe Thunderstorm Watches in Oklahoma, 2020 Every severe thunderstorm watch in 2020

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.