Alert archive / Texas / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 213

May 15, 201726 counties in Kansas; Beaver County, Cimarron County, Texas County, Oklahoma; 30 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 15, 2017, 3:44 PM CDT for 26 counties in Kansas; Beaver County, Cimarron County, Texas County, Oklahoma; 30 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: May 15, 2017, 3:44 PM CDT (20:44 UTC)
Expired: May 15, 2017, 10:59 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 59 counties

Cheyenne County, KS, Decatur County, KS, Finney County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Morton County, KS, Norton County, KS, Rawlins County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Sherman County, KS, Stanton County, KS, Stevens County, KS, Thomas County, KS, Wallace County, KS, Wichita County, KS, Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Collingsworth County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Floyd County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lamb County, TX, Lipscomb County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Swisher County, TX, Wheeler County, TX

The radar

The Dodge City radar (KDDC), 118 km from the middle of the area, began a volume at 20:44 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: 2%
Ten or more severe wind reports: 40%
One or more gusts of 65 knots or more: 10%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
May 15, 4:45 PM CDT	Severe Thunderstorm Warning	GLD	Logan, Wallace	45 min
May 15, 5:24 PM CDT	Severe Thunderstorm Warning	GLD	Logan, Thomas	66 min
May 15, 5:31 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Moore, Oldham, Potter, Sherman	44 min
May 15, 5:36 PM CDT	Severe Thunderstorm Warning	AMA	Texas	39 min
May 15, 5:39 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Moore, Sherman	66 min
May 15, 5:41 PM CDT	Severe Thunderstorm Warning	AMA	Oldham, Potter	49 min
May 15, 5:45 PM CDT	Severe Thunderstorm Warning	GLD	Sherman, Thomas	60 min
May 15, 5:56 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson	64 min
May 15, 6:07 PM CDT	Severe Thunderstorm Warning	AMA	Texas	53 min
May 15, 6:12 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Sherman	48 min
May 15, 6:21 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore	54 min
May 15, 6:23 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Sheridan, Thomas	46 min
May 15, 6:25 PM CDT	Severe Thunderstorm Warning	GLD	Sherman, Wallace	35 min
May 15, 6:26 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore, Potter	49 min
May 15, 6:30 PM CDT	Severe Thunderstorm Warning	AMA	Texas	45 min
May 15, 6:31 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Hamilton, Kearny, Morton, Stanton, Stevens	44 min
May 15, 6:35 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Moore, Sherman	55 min
May 15, 6:51 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hutchinson, Roberts	54 min
May 15, 6:54 PM CDT	Severe Thunderstorm Warning	AMA	Texas	66 min
May 15, 6:57 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Sheridan	22 min
May 15, 7:07 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Hamilton, Kearny, Stanton	53 min
May 15, 7:11 PM CDT	Severe Thunderstorm Warning	DDC	Morton, Stevens	49 min
May 15, 7:12 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore	48 min
May 15, 7:22 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	53 min
May 15, 7:41 PM CDT	Severe Thunderstorm Warning	GLD	Logan, Wichita	49 min
May 15, 7:54 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree	66 min
May 15, 7:58 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron, Texas	77 min
May 15, 8:01 PM CDT	Severe Thunderstorm Warning	DDC	Scott	44 min
May 15, 8:15 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Logan	45 min
May 15, 8:31 PM CDT	Flash Flood Warning	GLD	Decatur, Rawlins, Sheridan, Thomas	3 hr
May 15, 8:31 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree, Roberts	59 min
May 15, 8:46 PM CDT	Severe Thunderstorm Warning	GLD	Norton	29 min
May 15, 8:52 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne	49 min
May 15, 8:53 PM CDT	Severe Thunderstorm Warning	AMA	Texas	52 min
May 15, 9:29 PM CDT	Severe Thunderstorm Warning	AMA	Texas	61 min
May 15, 9:40 PM CDT	Severe Thunderstorm Warning	DDC	Grant, Haskell, Seward, Stevens	53 min
May 15, 10:13 PM CDT	Severe Thunderstorm Warning	DDC	Meade, Seward	47 min
May 15, 10:44 PM CDT	Severe Thunderstorm Warning	DDC	Meade, Seward	46 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

Dodge City, (KDDC), launched 12:00Z, 8.7 hours before the alert went out and 124 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: 146 J/kg
Mixed-layer CIN: -514 J/kg
Mixed-layer LCL: 2657 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -103 m²/s²
0-3 km storm-relative helicity: -8 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 15, 3:06 PM CDT	Mesoscale Discussion	SPC	Finney, Gove, Grant, Gray, Greeley, Hamilton and 13 more	114 min
May 15, 5:58 PM CDT	Mesoscale Discussion	SPC	Jewell, Norton, Osborne, Phillips, Rooks, Smith	2 hr
May 15, 6:53 PM CDT	Severe Thunderstorm Watch	SPC	Jewell, Osborne, Phillips, Rooks, Smith	6 hr

Nearby

Severe Thunderstorm Watches in Texas, 2017 Severe Thunderstorm Watches in Kansas, 2017 Severe Thunderstorm Watches in Oklahoma, 2017 Every severe thunderstorm watch in 2017

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.