Alert archive / Missouri / Mesoscale Discussions in 2009
Mesoscale Discussion 1902
The Storm Prediction Center issued this mesoscale discussion at Aug 17, 2009, 1:22 AM CDT for 5 states. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2009, 1:22 AM CDT (06:22 UTC)
- Expired
- Aug 17, 2009, 2:45 AM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 84 counties
Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Adams County, IL, Brown County, IL, Bureau County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Knox County, IL, McDonough County, IL, Mercer County, IL, Peoria County, IL, Pike County, IL, Rock Island County, IL, Schuyler County, IL, Stark County, IL, Warren County, IL, Whiteside County, IL, Atchison County, KS, Brown County, KS, Doniphan County, KS, Douglas County, KS, Franklin County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Marshall County, KS, Miami County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Pottawatomie County, KS, Riley County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Adair County, MO, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe County, MO, Platte County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Richardson County, NE
The radar
The Pleasant Hill radar (KEAX), 146 km from the middle of the area, began a volume at 06:24 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 nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 6.4 hours before the alert went out and 215 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
- 3341 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 611 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 358 m²/s²
- Significant tornado parameter
- 5.2
- Supercell composite
- 26.6
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 |
|---|---|---|---|---|
| Aug 16, 7:12 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Greeley, Hamilton, Kearny, Logan, Rawlins and 6 more | 93 min |
| Aug 17, 1:52 AM CDT | Mesoscale Discussion | SPC | Ellis, Gove, Graham, Lane, Logan, Ness and 8 more | 83 min |
| Aug 17, 4:51 PM CDT | Mesoscale Discussion | SPC | Greeley, Logan, Sherman, Wallace, Wichita | 84 min |
| Aug 17, 5:40 PM CDT | Mesoscale Discussion | SPC | Meade, Morton, Seward, Stevens | 65 min |
| Aug 17, 1:44 PM CDT | Mesoscale Discussion | SPC | Barry, Boone, Callaway, Camden, Carter, Christian and 36 more | 2 hr |
Nearby
Mesoscale Discussions in Missouri, 2009Mesoscale Discussions in Kansas, 2009Mesoscale Discussions in Illinois, 2009Every mesoscale discussion in 2009
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.