Alert archive / Kansas / Tornado Watches in 2010

Tornado Watch 76

April 22, 2010Cheyenne County, Kit Carson County, Yuma County, Colorado; 37 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska

The Storm Prediction Center issued this tornado watch at Apr 22, 2010, 6:48 PM MDT for Cheyenne County, Kit Carson County, Yuma County, Colorado; 37 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Apr 22, 2010, 6:48 PM MDT (00:48 UTC)
Expired
Apr 22, 2010, 11:20 PM MDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 43 counties

Cheyenne County, CO, Kit Carson County, CO, Yuma County, CO, Barber County, KS, Cheyenne County, KS, Clark County, KS, Comanche County, KS, Decatur County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Ness County, KS, Norton County, KS, Pawnee County, KS, Pratt County, KS, Rawlins County, KS, Rush County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Sherman County, KS, Stafford County, KS, Stevens County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Dundy County, NE, Hitchcock County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 74 km from the middle of the area, began a volume at 00:50 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
30%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 22, 6:51 PM MDTTornado WarningGLDKit Carson24 min
Apr 22, 7:17 PM MDTTornado WarningDDCLane28 min
Apr 22, 7:20 PM MDTTornado WarningGLDGove44 min
Apr 22, 7:23 PM MDTSevere Thunderstorm WarningDDCClark, Meade52 min
Apr 22, 7:28 PM MDTSevere Thunderstorm WarningDDCFinney22 min
Apr 22, 7:31 PM MDTFlash Flood WarningGLDGraham, Sheridan3 hr
Apr 22, 7:50 PM MDTSevere Thunderstorm WarningDDCLane, Scott40 min
Apr 22, 8:02 PM MDTTornado WarningGLDGove21 min
Apr 22, 8:09 PM MDTSevere Thunderstorm WarningDDCClark, Comanche51 min
Apr 22, 8:59 PM MDTSevere Thunderstorm WarningDDCComanche, Kiowa18 min
Apr 22, 9:24 PM MDTSevere Thunderstorm WarningDDCTrego19 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 00:00Z, 0.8 hours before the alert went out and 170 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, Dodge City, at 00:00Z on 2010-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 966 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, Dodge City, at 00:00Z on 2010-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 320 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
966 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
773 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
320 m²/s²
0-3 km storm-relative helicity
401 m²/s²
Significant tornado parameter
2.4
Supercell composite
12.4

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 22, 10:17 PM MDTMesoscale DiscussionSPCYuma58 min
Apr 23, 10:43 AM MDTMesoscale DiscussionSPCPhillips, Sedgwick, Yuma62 min
Apr 23, 3:10 PM MDTMesoscale DiscussionSPCLogan, Phillips, Sedgwick, Washington, Yuma95 min
Apr 23, 12:18 PM MDTTornado WatchSPCAdams, Arthur, Blaine, Boone, Brown, Buffalo and 35 more7 hr

Nearby

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