Alert archive / Kansas / Tornado Watches in 2010

Tornado Watch 108

April 29, 20104 states

The Storm Prediction Center issued this tornado watch at Apr 29, 2010, 4:39 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 29, 2010, 4:39 PM CDT (21:39 UTC)
Expired
Apr 30, 2010, 12:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 52 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Barton County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellsworth County, KS, Geary County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Nemaha County, KS, Osborne County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Washington County, KS, Atchison County, MO, Holt County, MO, Burt County, NE, Butler County, NE, Cass County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Washington County, NE

The radar

The Omaha radar (KOAX), 92 km from the middle of the area, began a volume at 21:42 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
70%
One or more hailstones of 2 inches or more
50%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 29, 4:55 PM CDTSevere Thunderstorm WarningTOPCloud, Republic, Washington26 min
Apr 29, 5:10 PM CDTSevere Thunderstorm WarningTOPCloud, Republic, Washington20 min
Apr 29, 5:16 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington44 min
Apr 29, 5:36 PM CDTSevere Thunderstorm WarningGIDMitchell27 min
Apr 29, 6:02 PM CDTSevere Thunderstorm WarningTOPCloud, Republic28 min
Apr 29, 6:16 PM CDTSevere Thunderstorm WarningTOPRepublic29 min
Apr 29, 6:20 PM CDTSevere Thunderstorm WarningGIDThayer40 min
Apr 29, 6:27 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington33 min
Apr 29, 6:41 PM CDTSevere Thunderstorm WarningOAXJefferson, Saline34 min
Apr 29, 6:56 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell49 min
Apr 29, 6:56 PM CDTSevere Thunderstorm WarningTOPWashington34 min
Apr 29, 7:06 PM CDTSevere Thunderstorm WarningOAXGage, Jefferson39 min
Apr 29, 7:09 PM CDTTornado WarningGIDJewell17 min
Apr 29, 7:12 PM CDTTornado WarningTOPWashington16 min
Apr 29, 7:14 PM CDTTornado WarningTOPRepublic46 min
Apr 29, 7:23 PM CDTSevere Thunderstorm WarningGIDFillmore, Thayer52 min
Apr 29, 7:43 PM CDTTornado WarningGIDThayer32 min
Apr 29, 7:50 PM CDTTornado WarningTOPRepublic, Washington25 min
Apr 29, 7:59 PM CDTSevere Thunderstorm WarningOAXJefferson, Saline31 min
Apr 29, 8:06 PM CDTSevere Thunderstorm WarningGIDJewell24 min
Apr 29, 8:08 PM CDTSevere Thunderstorm WarningGIDThayer52 min
Apr 29, 8:22 PM CDTSevere Thunderstorm WarningICTRussell38 min
Apr 29, 8:24 PM CDTSevere Thunderstorm WarningOAXGage, Jefferson, Lancaster, Saline51 min
Apr 29, 8:26 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell, Osborne34 min
Apr 29, 8:27 PM CDTSevere Thunderstorm WarningOAXMontgomery, Pottawattamie33 min
Apr 29, 8:27 PM CDTTornado WarningOAXGage, Jefferson33 min
Apr 29, 8:31 PM CDTSevere Thunderstorm WarningTOPRepublic44 min
Apr 29, 8:32 PM CDTFlash Flood WarningTOPRepublic4 hr
Apr 29, 8:43 PM CDTSevere Thunderstorm WarningICTLincoln, Russell62 min
Apr 29, 8:46 PM CDTSevere Thunderstorm WarningOAXJefferson, Saline29 min
Apr 29, 8:51 PM CDTSevere Thunderstorm WarningICTBarton54 min
Apr 29, 8:57 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell, Osborne48 min
Apr 29, 8:58 PM CDTSevere Thunderstorm WarningICTBarton, Russell38 min
Apr 29, 8:59 PM CDTSevere Thunderstorm WarningGIDThayer46 min
Apr 29, 9:01 PM CDTSevere Thunderstorm WarningOAXGage, Johnson, Lancaster, Otoe29 min
Apr 29, 9:03 PM CDTSevere Thunderstorm WarningOAXMills, Pottawattamie42 min
Apr 29, 9:12 PM CDTSevere Thunderstorm WarningTOPCloud, Republic, Washington48 min
Apr 29, 9:19 PM CDTSevere Thunderstorm WarningICTEllsworth, Russell56 min
Apr 29, 9:23 PM CDTSevere Thunderstorm WarningOAXJefferson, Saline37 min
Apr 29, 9:25 PM CDTSevere Thunderstorm WarningOAXCass, Johnson, Nemaha, Otoe35 min
Apr 29, 9:32 PM CDTSevere Thunderstorm WarningOAXGage, Lancaster28 min
Apr 29, 9:42 PM CDTSevere Thunderstorm WarningICTBarton, Ellsworth, Lincoln, Russell63 min
Apr 29, 9:44 PM CDTSevere Thunderstorm WarningTOPCloud, Ottawa, Republic46 min
Apr 29, 9:45 PM CDTSevere Thunderstorm WarningGIDMitchell30 min
Apr 29, 9:53 PM CDTSevere Thunderstorm WarningOAXCass, Lancaster, Otoe37 min
Apr 29, 9:54 PM CDTSevere Thunderstorm WarningICTBarton66 min
Apr 29, 9:55 PM CDTSevere Thunderstorm WarningOAXGage, Jefferson, Lancaster, Saline35 min
Apr 29, 9:57 PM CDTSevere Thunderstorm WarningOAXFremont, Mills36 min
Apr 29, 10:09 PM CDTTornado WarningOAXOtoe36 min
Apr 29, 10:21 PM CDTSevere Thunderstorm WarningOAXGage, Johnson, Lancaster, Otoe, Pawnee24 min
Apr 29, 10:23 PM CDTSevere Thunderstorm WarningTOPCloud, Ottawa52 min
Apr 29, 10:25 PM CDTSevere Thunderstorm WarningICTEllsworth, Rice65 min
Apr 29, 10:34 PM CDTFlash Flood WarningTOPRepublic, Washington3 hr
Apr 29, 10:35 PM CDTSevere Thunderstorm WarningOAXCass, Otoe, Sarpy25 min
Apr 29, 10:41 PM CDTSevere Thunderstorm WarningOAXJohnson, Nemaha, Otoe, Pawnee34 min
Apr 29, 10:45 PM CDTSevere Thunderstorm WarningICTEllsworth, Lincoln, Saline60 min
Apr 29, 10:54 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington41 min
Apr 29, 10:55 PM CDTSevere Thunderstorm WarningOAXFremont, Mills, Pottawattamie35 min
Apr 29, 10:58 PM CDTTornado WarningOAXMills, Pottawattamie32 min
Apr 29, 11:01 PM CDTSevere Thunderstorm WarningOAXJohnson, Nemaha, Otoe20 min
Apr 29, 11:05 PM CDTSevere Thunderstorm WarningICTRice25 min
Apr 29, 11:07 PM CDTTornado WarningOAXFremont, Mills23 min
Apr 29, 11:10 PM CDTTornado WarningOAXOtoe35 min
Apr 29, 11:12 PM CDTSevere Thunderstorm WarningTOPClay, Cloud, Dickinson, Ottawa48 min
Apr 29, 11:24 PM CDTSevere Thunderstorm WarningTOPDickinson51 min
Apr 29, 11:26 PM CDTSevere Thunderstorm WarningICTMcPherson, Rice54 min
Apr 29, 11:29 PM CDTSevere Thunderstorm WarningOAXPottawattamie31 min
Apr 29, 11:30 PM CDTTornado WarningOAXFremont16 min
Apr 29, 11:44 PM CDTTornado WarningOAXFremont16 min
Apr 29, 11:44 PM CDTSevere Thunderstorm WarningICTSaline31 min
Apr 29, 11:59 PM CDTTornado WarningOAXMills, Montgomery17 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

Omaha, NE (KOAX), launched 12:00Z, 9.7 hours before the alert went out and 92 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, Omaha, NE at 12:00Z on 2010-04-29Temperature 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, Omaha, NE at 12:00Z on 2010-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 619 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
975 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
619 m²/s²
0-3 km storm-relative helicity
554 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
Apr 29, 3:49 PM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 3 more86 min
Apr 29, 5:18 PM CDTMesoscale DiscussionSPCAdair, Audubon, Boone, Butler, Calhoun, Carroll and 23 more57 min

Nearby

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