Alert archive / Illinois / Mesoscale Discussions in 2012
Mesoscale Discussion 1315
The Storm Prediction Center issued this mesoscale discussion at Jun 29, 2012, 7:33 PM CDT for 35 counties in Illinois; Newton County, Indiana; 25 counties in Iowa. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2012, 7:33 PM CDT (00:33 UTC)
- Expired
- Jun 29, 2012, 9:00 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 61 counties
Benton County, IA, Cedar County, IA, Clinton County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Bureau County, IL, Carroll County, IL, Champaign County, IL, DeKalb County, IL, DeWitt County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Henderson County, IL, Henry County, IL, Iroquois County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McLean County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Warren County, IL, Whiteside County, IL, Will County, IL, Woodford County, IL, Newton County, IN
The radar
The Quad Cities radar (KDVN), 80 km from the middle of the area, began a volume at 00:34 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
Davenport, (KDVN), launched 00:00Z, 0.6 hours before the alert went out and 77 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
- 2804 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 1629 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.9
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 29, 11:46 PM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, DeWitt, Ford, Fulton, Grundy and 26 more | 119 min |
| Jun 30, 5:55 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Coles and 23 more | 3 hr |
| Jun 30, 4:23 AM CDT | Mesoscale Discussion | SPC | Adams, Fayette, Henry, Jay, Randolph, Rush and 3 more | 97 min |
| Jun 30, 4:27 PM CDT | Mesoscale Discussion | SPC | Blackford, Boone, Clinton, Dearborn, Decatur, Delaware and 25 more | 93 min |
| Jun 30, 3:34 PM CDT | Mesoscale Discussion | SPC | Fremont, Harrison, Mills, Montgomery, Page, Pottawattamie | 86 min |
Nearby
Mesoscale Discussions in Illinois, 2012Mesoscale Discussions in Iowa, 2012Mesoscale Discussions in Indiana, 2012Every mesoscale discussion in 2012
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.