Alert archive / Kansas / Mesoscale Discussions in 2011
Mesoscale Discussion 1331
The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2011, 7:46 PM CDT for 4 states. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2011, 7:46 PM CDT (00:46 UTC)
- Expired
- Jun 20, 2011, 8:45 PM CDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 78 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Carroll County, IA, Cass County, IA, Crawford County, IA, Fremont County, IA, Guthrie County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Doniphan County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Montgomery County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Bates County, MO, Buchanan County, MO, Caldwell County, MO, Cass County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Harrison County, MO, Holt County, MO, Jackson County, MO, Nodaway County, MO, Platte County, MO, Ray County, MO, Worth County, MO, Burt County, NE, Cass County, NE, Dodge County, NE, Douglas County, NE, Johnson County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Sarpy County, NE, Washington County, NE
The radar
The Topeka radar (KTWX), 115 km from the middle of the area, began a volume at 00:56 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, 0.8 hours before the alert went out and 100 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.
- Mixed-layer CAPE
- 2898 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 1426 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 9:02 PM CDT | Mesoscale Discussion | SPC | Audubon, Boone, Buena Vista, Calhoun, Carroll, Cherokee and 21 more | 58 min |
| Jun 20, 10:22 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Black Hawk, Boone, Bremer, Buchanan and 48 more | 83 min |
| Jun 20, 10:58 PM CDT | Tornado Watch | SPC | Appanoose, Black Hawk, Bremer, Butler, Cerro Gordo, Davis and 17 more | 4 hr |
| Jun 21, 1:25 AM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 14 more | 35 min |
| Jun 21, 11:45 AM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Clinton, Delaware, Dubuque, Fayette and 5 more | 3 hr |
| Jun 20, 7:21 PM CDT | Mesoscale Discussion | SPC | Decatur, Norton | 24 min |
| Jun 20, 7:40 PM CDT | Tornado Watch | SPC | Decatur, Graham, Jewell, Mitchell, Norton, Osborne and 4 more | 3 hr |
| Jun 20, 8:32 PM CDT | Tornado Watch | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Chautauqua and 25 more | 4 hr |
| Jun 20, 9:46 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford | 9 hr |
| Jun 21, 3:15 AM CDT | Mesoscale Discussion | SPC | Barry, Christian, Dade, Greene, Jasper, Lawrence and 5 more | 60 min |
| Jun 21, 12:56 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 22 more | 64 min |
| Jun 21, 1:22 PM CDT | Tornado Watch | SPC | Bollinger, Cape Girardeau, Carter, Crawford, Dent, Franklin and 15 more | 9 hr |
| Jun 21, 3:31 PM CDT | Mesoscale Discussion | SPC | Bollinger, Butler, Cape Girardeau, Carter, Iron, Jefferson and 15 more | 89 min |
Nearby
Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Iowa, 2011Mesoscale Discussions in Missouri, 2011Every mesoscale discussion in 2011
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.