Alert archive / Kansas / Mesoscale Discussions in 2010

Mesoscale Discussion 413

April 29, 20104 states

The Storm Prediction Center issued this mesoscale discussion at Apr 29, 2010, 7:12 PM CDT for 4 states. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
Apr 29, 2010, 7:12 PM CDT (00:12 UTC)
Expired
Apr 29, 2010, 8:15 PM CDT
In force
63 min
Issued by
the Storm Prediction Center
All 55 counties

Crawford County, IA, 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, Smith 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, York County, NE

The radar

The Topeka radar (KTWX), 103 km from the middle of the area, began a volume at 00:14 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.2 hours before the alert went out and 141 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, Topeka, KS at 00:00Z on 2010-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 749 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, Topeka, KS at 00:00Z on 2010-04-30The 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
749 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1860 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
158 m²/s²
0-3 km storm-relative helicity
181 m²/s²
Significant tornado parameter
0.1
Supercell composite
6.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 8:23 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Butler, Calhoun and 23 more67 min
Apr 29, 9:15 PM CDTSevere Thunderstorm WatchSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 13 more6 hr
Apr 29, 11:04 PM CDTMesoscale DiscussionSPCFremont, Mills, Montgomery, Page, Pottawattamie26 min
Apr 29, 11:21 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 13 more54 min
Apr 29, 11:46 PM CDTSevere Thunderstorm WatchSPCFremont, Mills, Montgomery, Page, Pottawattamie, Shelby4 hr
Apr 30, 2:12 AM CDTMesoscale DiscussionSPCAdair, Adams, Dallas, Hardin, Madison, Polk and 3 more93 min
Apr 30, 9:18 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Decatur, Des Moines, Henry, Iowa and 16 more57 min
Apr 30, 10:20 AM CDTSevere Thunderstorm WatchSPCAppanoose, Benton, Black Hawk, Bremer, Buchanan, Butler and 34 more5 hr
Apr 30, 12:01 PM CDTMesoscale DiscussionSPCAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more29 min
Apr 30, 12:23 PM CDTSevere Thunderstorm WatchSPCAllamakee, Chickasaw, Clayton, Fayette, Floyd, Howard and 2 more6 hr
Apr 30, 1:05 PM CDTTornado WatchSPCAllamakee, Cedar, Clayton, Clinton, Delaware, Des Moines and 11 more9 hr
Apr 30, 1:22 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Buchanan, Davis, Delaware and 19 more53 min
Apr 30, 2:41 PM CDTMesoscale DiscussionSPCCedar, Clinton, Des Moines, Dubuque, Henry, Jackson and 3 more64 min
Apr 30, 5:37 PM CDTMesoscale DiscussionSPCClinton, Jackson, Scott53 min
Apr 30, 1:10 AM CDTMesoscale DiscussionSPCCowley, Harper, Sumner2 hr
Apr 30, 1:11 PM CDTMesoscale DiscussionSPCBarry, Camden, Christian, Dade, Dallas, Douglas and 12 more2 hr
Apr 30, 1:46 PM CDTTornado WatchSPCBarry, Christian, Dallas, Dent, Douglas, Greene and 14 more5 hr
Apr 30, 2:08 PM CDTMesoscale DiscussionSPCAudrain, Callaway, Cole, Crawford, Franklin, Gasconade and 13 more67 min
Apr 30, 2:40 PM CDTTornado WatchSPCAudrain, Callaway, Crawford, Franklin, Gasconade, Iron and 16 more6 hr
Apr 30, 5:53 PM CDTMesoscale DiscussionSPCButler, Carter, Douglas, Howell, Oregon, Ozark and 6 more37 min
Apr 30, 6:24 PM CDTTornado WatchSPCButler, Carter, Dent, Douglas, Howell, Oregon and 5 more3 hr

Nearby

Mesoscale Discussions in Kansas, 2010Mesoscale Discussions in Nebraska, 2010Mesoscale Discussions in Iowa, 2010Every mesoscale discussion 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.