Alert archive / Illinois / Mesoscale Discussions in 2004
Mesoscale Discussion 1179
The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2004, 7:58 PM CDT for 33 counties in Illinois; 28 counties in Indiana; 4 counties in Iowa. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2004, 7:58 PM CDT (00:58 UTC)
- Expired
- Jun 10, 2004, 9:30 PM CDT
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 65 counties
Clinton County, IA, Dubuque County, IA, Jackson County, IA, Scott County, IA, Bureau County, IL, Carroll County, IL, Champaign County, IL, DeWitt County, IL, Douglas County, IL, Edgar 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, Marshall County, IL, McLean County, IL, Mercer 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, Bartholomew County, IN, Benton County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Fountain County, IN, Hamilton County, IN, Hendricks County, IN, Howard County, IN, Jasper County, IN, Johnson County, IN, Marion County, IN, Miami County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Warren County, IN, White County, IN
The radar
The Lincoln radar (KILX), 124 km from the middle of the area, began a volume at 01:00 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
Lincoln, IL (KILX), launched 00:00Z, 1.0 hours before the alert went out and 65 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
- 1700 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 922 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 10.7
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 10, 9:50 PM CDT | Tornado Watch | SPC | Cook, DuPage, Kankakee, Will | 5 hr |
| Jun 11, 5:56 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 14 more | 94 min |
| Jun 11, 6:20 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, DeKalb, Grundy, Jo Daviess and 10 more | 5 hr |
| Jun 11, 12:07 AM CDT | Mesoscale Discussion | SPC | Adams, Allen, Benton, Blackford, Boone, Carroll and 31 more | 83 min |
| Jun 11, 1:58 AM CDT | Mesoscale Discussion | SPC | Adams, Bartholomew, Blackford, Boone, Brown, Clay and 31 more | 92 min |
| Jun 11, 10:52 AM CDT | Mesoscale Discussion | SPC | Bartholomew, Brown, Dearborn, Decatur, Fayette, Franklin and 16 more | 113 min |
| Jun 11, 1:28 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 20 more | 62 min |
| Jun 11, 10:10 AM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more | 95 min |
| Jun 11, 12:55 PM CDT | Mesoscale Discussion | SPC | Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo, Cherokee and 23 more | 3 hr |
| Jun 11, 1:45 PM CDT | Tornado Watch | SPC | Black Hawk, Bremer, Buena Vista, Butler, Calhoun, Cerro Gordo and 20 more | 5 hr |
| Jun 11, 3:03 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Bremer, Butler, Calhoun, Cerro Gordo, Chickasaw and 19 more | 87 min |
| Jun 11, 4:55 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 20 more | 95 min |
| Jun 11, 5:00 PM CDT | Tornado Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Calhoun and 26 more | 6 hr |
Nearby
Mesoscale Discussions in Illinois, 2004Mesoscale Discussions in Indiana, 2004Mesoscale Discussions in Iowa, 2004Every mesoscale discussion in 2004
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.