Alert archive / Kansas / Severe Thunderstorm Watches in 2017

Severe Thunderstorm Watch 371

June 26, 20174 counties in Colorado; 29 counties in Kansas

The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2017, 3:09 PM MDT for 4 counties in Colorado; 29 counties in Kansas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jun 26, 2017, 3:09 PM MDT (21:09 UTC)
Expired
Jun 26, 2017, 9:00 PM MDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 33 counties

Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Yuma County, CO, Barton County, KS, Cheyenne County, KS, Decatur County, KS, Ellis County, KS, Ellsworth County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS

The radar

The Goodland radar (KGLD), 73 km from the middle of the area, began a volume at 21:12 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
20%
One or more gusts of 65 knots or more
5%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 26, 3:15 PM MDTSevere Thunderstorm WarningGLDRawlins45 min
Jun 26, 3:30 PM MDTSevere Thunderstorm WarningGLDDecatur, Sheridan60 min
Jun 26, 3:36 PM MDTSevere Thunderstorm WarningGLDYuma42 min
Jun 26, 3:40 PM MDTSevere Thunderstorm WarningGLDCheyenne35 min
Jun 26, 3:42 PM MDTSevere Thunderstorm WarningPUBKiowa48 min
Jun 26, 4:09 PM MDTSevere Thunderstorm WarningGLDSheridan51 min
Jun 26, 4:50 PM MDTSevere Thunderstorm WarningGLDLogan, Sheridan, Thomas40 min
Jun 26, 5:02 PM MDTTornado WarningGLDThomas29 min
Jun 26, 5:09 PM MDTSevere Thunderstorm WarningGLDGove, Sheridan33 min
Jun 26, 5:18 PM MDTSevere Thunderstorm WarningPUBBent, Kiowa23 min
Jun 26, 5:23 PM MDTTornado WarningGLDGove, Logan, Thomas37 min
Jun 26, 5:51 PM MDTTornado WarningGLDGove, Logan24 min
Jun 26, 6:12 PM MDTSevere Thunderstorm WarningDDCScott48 min
Jun 26, 6:15 PM MDTTornado WarningGLDLogan19 min
Jun 26, 7:10 PM MDTSevere Thunderstorm WarningGLDGreeley, Wichita50 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.2 hours before the alert went out and 187 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2017-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 186 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2017-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 158 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
186 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
634 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 26, 1:03 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Phillips, Yuma87 min
Jun 26, 5:40 PM MDTMesoscale DiscussionSPCBaca, Bent, Costilla, Crowley, Custer, Huerfano and 3 more2 hr
Jun 26, 2:48 PM MDTMesoscale DiscussionSPCAllen, Butler, Chase, Cherokee, Crawford, Elk and 8 more87 min

Nearby

Severe Thunderstorm Watches in Kansas, 2017Severe Thunderstorm Watches in Colorado, 2017Every 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.