Alert archive / Kansas / Severe Thunderstorm Watches in 2008

Severe Thunderstorm Watch 920

October 21, 20087 counties in Colorado; 30 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at Oct 21, 2008, 4:24 PM MDT for 7 counties in Colorado; 30 counties in Kansas; Dundy County, Hitchcock County, Red Willow County, Nebraska. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Oct 21, 2008, 4:24 PM MDT (22:24 UTC)
Expired
Oct 22, 2008, 12:00 AM MDT
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 40 counties

Baca County, CO, Bent County, CO, Cheyenne County, CO, Kiowa County, CO, Kit Carson County, CO, Prowers County, CO, Yuma County, CO, Cheyenne County, KS, Clark County, KS, Decatur County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Morton County, KS, Ness 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, 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), 29 km from the middle of the area, began a volume at 22:26 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
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 21, 6:42 PM MDTSevere Thunderstorm WarningPUBKiowa63 min
Oct 21, 7:25 PM MDTSevere Thunderstorm WarningDDCFinney, Gray50 min
Oct 21, 7:47 PM MDTSevere Thunderstorm WarningDDCFinney, Lane, Scott43 min
Oct 21, 7:48 PM MDTSevere Thunderstorm WarningGLDGreeley, Wallace27 min
Oct 21, 8:00 PM MDTSevere Thunderstorm WarningDDCHamilton, Kearny45 min
Oct 21, 8:01 PM MDTSevere Thunderstorm WarningGLDThomas29 min
Oct 21, 8:15 PM MDTSevere Thunderstorm WarningDDCFinney, Gray, Hodgeman45 min
Oct 21, 8:31 PM MDTSevere Thunderstorm WarningDDCLane, Scott44 min
Oct 21, 8:37 PM MDTSevere Thunderstorm WarningDDCFinney, Hamilton, Kearny38 min
Oct 21, 9:01 PM MDTSevere Thunderstorm WarningDDCEdwards, Hodgeman, Pawnee44 min
Oct 21, 9:06 PM MDTSevere Thunderstorm WarningDDCLane, Ness, Scott39 min
Oct 21, 9:06 PM MDTSevere Thunderstorm WarningDDCGrant, Stanton54 min
Oct 21, 9:18 PM MDTSevere Thunderstorm WarningDDCFinney, Ford, Gray, Hodgeman, Kearny42 min
Oct 21, 9:37 PM MDTSevere Thunderstorm WarningDDCMorton, Seward, Stevens38 min
Oct 21, 9:47 PM MDTSevere Thunderstorm WarningDDCEdwards, Ellis, Finney, Ford, Grant, Gray and 10 more43 min
Oct 21, 10:17 PM MDTSevere Thunderstorm WarningDDCMeade, Seward, Stevens43 min
Oct 21, 10:32 PM MDTSevere Thunderstorm WarningDDCEdwards, Ellis, Hodgeman, Ness, Pawnee, Rush43 min
Oct 21, 10:42 PM MDTSevere Thunderstorm WarningDDCClark, Edwards, Ford, Gray, Haskell, Kiowa and 1 more48 min
Oct 21, 10:59 PM MDTSevere Thunderstorm WarningDDCClark, Comanche, Ford, Kiowa, Meade46 min
Oct 21, 11:14 PM MDTSevere Thunderstorm WarningDDCEdwards, Ford, Hodgeman, Kiowa, Pawnee, Pratt and 2 more46 min
Oct 21, 11:47 PM MDTSevere Thunderstorm WarningDDCBarber, Clark, Comanche, Kiowa37 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, 10.4 hours before the alert went out and 233 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 12:00Z on 2008-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2008-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 244 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
610 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
244 m²/s²
0-3 km storm-relative helicity
236 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.

IssuedProductOfficeCountiesLasted
Oct 21, 2:34 PM MDTMesoscale DiscussionSPCCheyenne, Kiowa, Kit Carson, Lincoln, Logan, Morgan and 3 more86 min

Nearby

Severe Thunderstorm Watches in Kansas, 2008Severe Thunderstorm Watches in Colorado, 2008Severe Thunderstorm Watches in Nebraska, 2008Every severe thunderstorm watch in 2008

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.