Alert archive / Illinois / Mesoscale Discussions / 2009
Mesoscale Discussions in Illinois, September 2009
4 mesoscale discussions in September 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 September 2009. Tap one for its archive.
- Mesoscale Discussions
- 4
- Busiest day
- September 26, 20092 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 |
|---|---|---|---|---|
| Sep 26, 1:42 PM CDT | Mesoscale Discussion | SPC | Adams, Alexander, Bond, Brown, Calhoun, Cass and 63 more | 93 min |
| Sep 26, 5:23 PM CDT | Mesoscale Discussion | SPC | Hardin, Massac | 97 min |
| Sep 27, 5:32 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Champaign, Cook, DeKalb and 39 more | 88 min |
| Sep 27, 11:04 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Douglas, Edgar, Ford, Iroquois and 6 more | 86 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Champaign County3
- DeWitt County3
- Piatt County3
- Douglas County2
- Edgar County2
- Fulton County2
- Hardin County2
- Logan County2
- McDonough County2
- McLean County2
- Macon County2
- Mason County2
- Massac County2
- Menard County2
- Moultrie County2
- Peoria County2
- Schuyler County2
- Shelby County2
- Tazewell County2
- Vermilion County2
- Ford County2
- Iroquois County2
- Kankakee County2
- Adams County1
- Alexander County1
- Bond County1
- Brown County1
- Calhoun County1
- Cass County1
- Christian County1
- Clark County1
- Clay County1
- Clinton County1
- Coles County1
- Crawford County1
- Cumberland County1
- Edwards County1
- Effingham County1
- Fayette County1
- Franklin County1
62 more counties
- Gallatin County1
- Greene County1
- Hamilton County1
- Hancock County1
- Jackson County1
- Jasper County1
- Jefferson County1
- Jersey County1
- Johnson County1
- Lawrence County1
- Macoupin County1
- Madison County1
- Marion County1
- Monroe County1
- Montgomery County1
- Morgan County1
- Perry County1
- Pike County1
- Pope County1
- Pulaski County1
- Randolph County1
- Richland County1
- Saint Clair County1
- Saline County1
- Sangamon County1
- Scott County1
- Union County1
- Wabash County1
- Washington County1
- Wayne County1
- White County1
- Williamson County1
- Boone County1
- Bureau County1
- Carroll County1
- Cook County1
- DeKalb County1
- DuPage County1
- Grundy County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- Kane County1
- Kendall County1
- Knox County1
- Lake County1
- LaSalle County1
- Lee County1
- Livingston County1
- McHenry County1
- Marshall County1
- Mercer County1
- Ogle County1
- Putnam County1
- Rock Island County1
- Stark County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Will County1
- Winnebago County1
- Woodford County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.