Alert archive / Illinois / Mesoscale Discussions / 2009
Mesoscale Discussions in Illinois, July 2009
21 mesoscale discussions in July 2009. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in July 2009. Tap one for its archive.
- Mesoscale Discussions
- 21
- Busiest day
- July 25, 20094 mesoscale discussions
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 11:52 AM CDT | Mesoscale Discussion | SPC | Alexander, Massac, Pulaski | 53 min |
| Jul 4, 5:27 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more | 63 min |
| Jul 8, 3:42 PM CDT | Mesoscale Discussion | SPC | Cass, Christian, Clay, Coles, Crawford, Cumberland and 29 more | 93 min |
| Jul 10, 1:36 AM CDT | Mesoscale Discussion | SPC | Jo Daviess | 24 min |
| Jul 11, 2:31 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, Kane, Lake, McHenry, Ogle and 2 more | 29 min |
| Jul 11, 6:20 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Massac, Pulaski, Union | 115 min |
| Jul 12, 10:28 AM CDT | Mesoscale Discussion | SPC | Monroe | 92 min |
| Jul 12, 1:05 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 85 min |
| Jul 15, 12:50 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, Henderson, McDonough, Pike and 2 more | 85 min |
| Jul 15, 2:33 AM CDT | Mesoscale Discussion | SPC | Cass, Champaign, Christian, Coles, Cumberland, DeWitt and 12 more | 2 hr |
| Jul 15, 5:36 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Jackson, Johnson, Massac, Perry and 6 more | 54 min |
| Jul 16, 4:59 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Massac, Pope, Pulaski and 3 more | 61 min |
| Jul 16, 11:02 PM CDT | Mesoscale Discussion | SPC | Clay, Edwards, Jefferson, Lawrence, Marion, Richland and 3 more | 88 min |
| Jul 23, 11:53 AM CDT | Mesoscale Discussion | SPC | Boone, DeKalb, DuPage, Kane, McHenry, Winnebago | 97 min |
| Jul 24, 9:51 AM CDT | Mesoscale Discussion | SPC | Jo Daviess | 54 min |
| Jul 24, 3:52 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Henderson, Henry, Jo Daviess and 15 more | 83 min |
| Jul 24, 7:20 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Henderson, Henry, Jo Daviess and 16 more | 85 min |
| Jul 24, 9:22 PM CDT | Mesoscale Discussion | SPC | Bureau, DeWitt, Fulton, Hancock, Henderson, Henry and 18 more | 53 min |
| Jul 24, 11:46 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Champaign, Christian, Clark and 26 more | 89 min |
| Jul 25, 3:09 AM CDT | Mesoscale Discussion | SPC | Edwards, Franklin, Gallatin, Hamilton, Hardin, Johnson and 8 more | 96 min |
| Jul 30, 4:51 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Kane, Lake, Lee and 4 more | 114 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Massac County7
- Alexander County6
- Pulaski County6
- Johnson County6
- Union County6
- Jackson County5
- Pope County5
- White County5
- Williamson County5
- Tazewell County5
- Ogle County5
- Winnebago County5
- Franklin County4
- Saline County4
- DeWitt County4
- Edwards County4
- Knox County4
- Logan County4
- Mason County4
- Peoria County4
- Stark County4
- Wabash County4
- Warren County4
- Wayne County4
- Jo Daviess County4
- Stephenson County4
- Henderson County4
- DeKalb County4
- Lee County4
- Gallatin County3
- Hamilton County3
- Hardin County3
- Perry County3
- Cass County3
- Christian County3
- Coles County3
- Cumberland County3
- Douglas County3
- Fulton County3
- Macon County3
51 more counties
- Menard County3
- Morgan County3
- Moultrie County3
- Piatt County3
- Sangamon County3
- Shelby County3
- Woodford County3
- Boone County3
- Kane County3
- McHenry County3
- Hancock County3
- McDonough County3
- McLean County3
- Bureau County3
- Carroll County3
- Henry County3
- LaSalle County3
- Marshall County3
- Mercer County3
- Putnam County3
- Rock Island County3
- Whiteside County3
- Clay County2
- Lawrence County2
- Marion County2
- Richland County2
- Lake County2
- Jefferson County2
- Adams County2
- Brown County2
- Pike County2
- Schuyler County2
- Scott County2
- Champaign County2
- Randolph County2
- Crawford County1
- Effingham County1
- Fayette County1
- Jasper County1
- Montgomery County1
- Cook County1
- Monroe County1
- Washington County1
- DuPage County1
- Kendall County1
- Clark County1
- Edgar County1
- Ford County1
- Iroquois County1
- Kankakee County1
- Vermilion County1
Nearby
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Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.