Alert archive / Kansas / Tornado Watches in 2010

Tornado Watch 359

June 20, 2010Cheyenne County, Kit Carson County, Yuma County, Colorado; 34 counties in Kansas; 17 counties in Nebraska

The Storm Prediction Center issued this tornado watch at Jun 20, 2010, 2:07 PM MDT for Cheyenne County, Kit Carson County, Yuma County, Colorado; 34 counties in Kansas; 17 counties in Nebraska. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jun 20, 2010, 2:07 PM MDT (20:07 UTC)
Expired
Jun 20, 2010, 10:00 PM MDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
4 in
Strongest gust expected
70 kt
All 54 counties

Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Cheyenne County, KS, Clay County, KS, Cloud County, KS, Decatur County, KS, Dickinson County, KS, Ellis County, KS, Ellsworth County, KS, Gove County, KS, Graham County, KS, Greeley County, KS, Jewell County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Ottawa County, KS, Phillips County, KS, Rawlins County, KS, Republic County, KS, Rooks County, KS, Russell County, KS, Saline County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Washington County, KS, Wichita County, KS, Adams County, NE, Clay County, NE, Dundy County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gosper County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Kearney County, NE, Nuckolls County, NE, Phelps County, NE, Red Willow County, NE, Thayer County, NE, Webster County, NE

The radar

The Goodland radar (KGLD), 117 km from the middle of the area, began a volume at 20:09 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
50%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
70%
One or more gusts of 65 knots or more
50%
Ten or more severe hail reports
95%
One or more hailstones of 2 inches or more
60%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 20, 2:22 PM MDTSevere Thunderstorm WarningDDCScott38 min
Jun 20, 2:36 PM MDTSevere Thunderstorm WarningGLDGove, Logan54 min
Jun 20, 2:47 PM MDTTornado WarningDDCScott28 min
Jun 20, 2:54 PM MDTTornado WarningGLDGove, Logan, Wichita66 min
Jun 20, 2:57 PM MDTSevere Thunderstorm WarningGLDGreeley43 min
Jun 20, 3:14 PM MDTTornado WarningDDCScott31 min
Jun 20, 3:24 PM MDTSevere Thunderstorm WarningGLDGove, Sheridan66 min
Jun 20, 3:25 PM MDTSevere Thunderstorm WarningGLDLogan, Wichita65 min
Jun 20, 3:25 PM MDTSevere Thunderstorm WarningGLDDecatur, Graham, Norton, Sheridan65 min
Jun 20, 3:44 PM MDTSevere Thunderstorm WarningDDCLane, Scott61 min
Jun 20, 3:53 PM MDTSevere Thunderstorm WarningGIDPhillips, Rooks52 min
Jun 20, 3:53 PM MDTTornado WarningGLDGove, Logan67 min
Jun 20, 3:55 PM MDTTornado WarningDDCLane, Scott65 min
Jun 20, 3:57 PM MDTSevere Thunderstorm WarningGLDLogan, Wichita63 min
Jun 20, 4:16 PM MDTSevere Thunderstorm WarningGIDPhillips, Smith44 min
Jun 20, 4:16 PM MDTTornado WarningGLDThomas59 min
Jun 20, 4:25 PM MDTTornado WarningGLDGove65 min
Jun 20, 4:29 PM MDTTornado WarningGLDGraham23 min
Jun 20, 4:41 PM MDTSevere Thunderstorm WarningDDCScott64 min
Jun 20, 4:42 PM MDTSevere Thunderstorm WarningGIDPhillips, Rooks48 min
Jun 20, 5:06 PM MDTSevere Thunderstorm WarningGIDOsborne, Smith39 min
Jun 20, 5:08 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson26 min
Jun 20, 5:18 PM MDTTornado WarningGLDThomas42 min
Jun 20, 5:19 PM MDTSevere Thunderstorm WarningGIDOsborne, Rooks41 min
Jun 20, 5:24 PM MDTSevere Thunderstorm WarningDDCNess, Trego51 min
Jun 20, 5:25 PM MDTTornado WarningGLDGove, Logan65 min
Jun 20, 5:27 PM MDTSevere Thunderstorm WarningGIDPhillips, Rooks33 min
Jun 20, 5:38 PM MDTFlash Flood WarningGLDGove, Logan, Wichita6 hr
Jun 20, 5:42 PM MDTSevere Thunderstorm WarningGIDOsborne, Smith63 min
Jun 20, 5:43 PM MDTSevere Thunderstorm WarningDDCLane, Scott47 min
Jun 20, 5:56 PM MDTSevere Thunderstorm WarningGIDOsborne, Rooks49 min
Jun 20, 5:59 PM MDTSevere Thunderstorm WarningGIDJewell, Mitchell46 min
Jun 20, 6:07 PM MDTTornado WarningGIDJewell, Smith38 min
Jun 20, 6:13 PM MDTTornado WarningGLDGove62 min
Jun 20, 6:35 PM MDTSevere Thunderstorm WarningTOPCloud, Ottawa, Republic55 min
Jun 20, 6:39 PM MDTTornado WarningGIDJewell28 min
Jun 20, 6:44 PM MDTSevere Thunderstorm WarningGIDJewell, Mitchell31 min
Jun 20, 6:45 PM MDTTornado WarningGIDJewell17 min
Jun 20, 6:46 PM MDTTornado WarningTOPRepublic29 min
Jun 20, 6:53 PM MDTSevere Thunderstorm WarningGLDGove21 min
Jun 20, 6:58 PM MDTSevere Thunderstorm WarningGIDNuckolls, Thayer47 min
Jun 20, 7:10 PM MDTTornado WarningTOPCloud, Republic35 min
Jun 20, 7:11 PM MDTSevere Thunderstorm WarningGIDJewell15 min
Jun 20, 7:25 PM MDTSevere Thunderstorm WarningTOPClay, Cloud, Geary, Marshall, Ottawa, Republic and 2 more65 min
Jun 20, 7:48 PM MDTTornado WarningTOPWashington27 min
Jun 20, 8:19 PM MDTSevere Thunderstorm WarningGLDDecatur, Norton, Sheridan35 min
Jun 20, 8:24 PM MDTSevere Thunderstorm WarningTOPClay, Dickinson, Geary, Marshall, Nemaha, Pottawatomie and 3 more51 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, 8.1 hours before the alert went out and 166 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 2010-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2118 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 2010-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.19395878Sfc1 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
2118 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
-9.7

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 20, 12:59 PM MDTMesoscale DiscussionSPCAdams, Broomfield, Morgan, Weld2 hr
Jun 20, 1:30 PM MDTTornado WatchSPCAdams, Arapahoe, Boulder, Broomfield, Denver, Douglas and 7 more7 hr
Jun 20, 4:23 PM MDTMesoscale DiscussionSPCAdams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 9 more67 min
Jun 19, 8:22 PM MDTSevere Thunderstorm WatchSPCAtchison, Brown, Clay, Cloud, Decatur, Dickinson and 33 more6 hr
Jun 19, 10:13 PM MDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 23 more92 min
Jun 20, 11:04 AM MDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Nemaha116 min
Jun 20, 1:49 PM MDTMesoscale DiscussionSPCCloud, Gove, Graham, Jewell, Logan, Mitchell and 11 more56 min
Jun 20, 4:31 PM MDTMesoscale DiscussionSPCCloud, Ellis, Gove, Graham, Jewell, Lincoln and 9 more89 min
Jun 20, 5:55 PM MDTMesoscale DiscussionSPCAtchison, Brown, Clay, Cloud, Dickinson, Douglas and 16 more95 min
Jun 19, 9:08 PM MDTMesoscale DiscussionSPCArthur, Blaine, Box Butte, Boyd, Brown, Cherry and 22 more67 min
Jun 19, 9:39 PM MDTSevere Thunderstorm WatchSPCBlaine, Boyd, Brown, Cherry, Garfield, Grant and 8 more6 hr
Jun 20, 3:26 AM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Brown, Butler, Cedar and 25 more94 min
Jun 20, 3:46 AM MDTMesoscale DiscussionSPCAntelope, Blaine, Boone, Brown, Butler, Cedar and 25 more89 min

Nearby

Tornado Watches in Kansas, 2010Tornado Watches in Nebraska, 2010Tornado Watches in Colorado, 2010Every 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.