Alert archive / Missouri / Mesoscale Discussions in 2011
Mesoscale Discussion 740
The Storm Prediction Center issued this mesoscale discussion at May 11, 2011, 3:57 PM CDT for 31 counties in Kansas; 33 counties in Missouri; Nemaha County, Pawnee County, Richardson County, Nebraska. It was in force for 48 min.
The area
The outline as issued.
The facts
- Issued
- May 11, 2011, 3:57 PM CDT (20:57 UTC)
- Expired
- May 11, 2011, 4:45 PM CDT
- In force
- 48 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 279
All 67 counties
Allen County, KS, Anderson County, KS, Atchison County, KS, Bourbon County, KS, Brown County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Doniphan County, KS, Douglas 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, Marshall County, KS, Miami County, KS, Nemaha County, KS, Neosho County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Andrew County, MO, Atchison County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Clinton County, MO, Dade County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Holt County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Nodaway County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO, Nemaha County, NE, Pawnee County, NE, Richardson County, NE
The radar
The Pleasant Hill radar (KEAX), 63 km from the middle of the area, began a volume at 20:57 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 12:00Z, 9.0 hours before the alert went out and 71 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
- 2161 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.5
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 |
|---|---|---|---|---|
| May 11, 7:30 AM CDT | Mesoscale Discussion | SPC | Meade, Seward, Stevens | 60 min |
| May 11, 11:21 AM CDT | Mesoscale Discussion | SPC | Butler, Chase, Clay, Cloud, Coffey, Dickinson and 22 more | 84 min |
| May 11, 12:16 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Brown, Butler, Chase, Chautauqua and 48 more | 5 hr |
| May 11, 1:51 PM CDT | Mesoscale Discussion | SPC | Clark, Comanche, Edwards, Finney, Ford, Gove and 25 more | 84 min |
| May 11, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Atchison, Bourbon, Brown, Chautauqua and 24 more | 8 hr |
| May 11, 4:52 PM CDT | Tornado Watch | SPC | Cheyenne, Decatur, Gove, Graham, Logan, Norton and 7 more | 6 hr |
| May 11, 6:02 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellis and 9 more | 88 min |
| May 11, 6:35 PM CDT | Mesoscale Discussion | SPC | Cherokee, Labette | 55 min |
| May 11, 8:09 AM CDT | Mesoscale Discussion | SPC | Adair, Grundy, Knox, Linn, Macon, Mercer and 4 more | 66 min |
| May 11, 2:18 PM CDT | Mesoscale Discussion | SPC | Lincoln, Pike, Saint Charles, Saint Louis, City of Saint Louis | 57 min |
| May 11, 3:38 PM CDT | Mesoscale Discussion | SPC | Clark, Schuyler, Scotland | 2 hr |
| May 11, 6:17 PM CDT | Mesoscale Discussion | SPC | Adair, Grundy, Knox, Macon, Mercer, Putnam and 3 more | 28 min |
| May 11, 2:31 PM CDT | Mesoscale Discussion | SPC | Burt, Butler, Cass, Colfax, Cuming, Dakota and 8 more | 59 min |
| May 11, 2:53 PM CDT | Tornado Watch | SPC | Antelope, Boone, Burt, Butler, Cass, Colfax and 24 more | 6 hr |
| May 11, 5:03 PM CDT | Mesoscale Discussion | SPC | Cedar, Dakota, Dixon | 57 min |
Nearby
Mesoscale Discussions in Missouri, 2011Mesoscale Discussions in Kansas, 2011Mesoscale Discussions in Nebraska, 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.