Alert archive / Illinois / Mesoscale Discussions / 2009
Mesoscale Discussions in Illinois, March 2009
11 mesoscale discussions in March 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 March 2009. Tap one for its archive.
- Mesoscale Discussions
- 11
- Busiest day
- March 8, 20093 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 |
|---|---|---|---|---|
| Mar 7, 10:26 PM CST | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Logan and 7 more | 2 hr |
| Mar 8, 9:26 AM CDT | Mesoscale Discussion | SPC | Bond, Brown, Calhoun, Cass, Christian, Clinton and 32 more | 64 min |
| Mar 8, 11:35 AM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clay, Clinton, Coles and 27 more | 115 min |
| Mar 10, 3:15 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 24 more | 2 hr |
| Mar 10, 7:31 PM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Clinton, Coles, Crawford and 30 more | 119 min |
| Mar 18, 2:22 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Coles, Crawford and 27 more | 113 min |
| Mar 24, 5:36 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 9 more | 54 min |
| Mar 24, 10:28 PM CDT | Mesoscale Discussion | SPC | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more | 92 min |
| Mar 28, 12:58 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Pope, Saline | 92 min |
| Mar 29, 3:42 AM CDT | Mesoscale Discussion | SPC | Boone, DeKalb, Kane, LaSalle, McHenry, Marshall and 1 more | 4 hr |
| Mar 31, 6:00 PM CDT | Mesoscale Discussion | SPC | DuPage, Kane, Kankakee, McHenry, Will | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Perry County6
- Randolph County6
- Clinton County5
- Coles County5
- Cumberland County5
- Effingham County5
- Fayette County5
- Jackson County5
- Jefferson County5
- Marion County5
- Shelby County5
- Washington County5
- Bond County4
- Douglas County4
- Madison County4
- Monroe County4
- Montgomery County4
- Saint Clair County4
- Clay County4
- Franklin County4
- Hamilton County4
- Jasper County4
- Gallatin County4
- Saline County4
- Logan County3
- Menard County3
- Christian County3
- DeWitt County3
- Macon County3
- Macoupin County3
- Moultrie County3
- Piatt County3
- Sangamon County3
- Wayne County3
- Clark County3
- Edgar County3
- Hardin County3
- Pope County3
- Williamson County3
- Kane County3
39 more counties
- McHenry County3
- Brown County2
- Cass County2
- Mason County2
- Morgan County2
- Pike County2
- Schuyler County2
- Scott County2
- Jersey County2
- Champaign County2
- Alexander County2
- Crawford County2
- Edwards County2
- Johnson County2
- Lawrence County2
- Massac County2
- Pulaski County2
- Richland County2
- Union County2
- Wabash County2
- White County2
- Boone County2
- DeKalb County2
- DuPage County2
- LaSalle County2
- Will County2
- Adams County1
- Fulton County1
- Hancock County1
- McDonough County1
- Calhoun County1
- Greene County1
- Tazewell County1
- Grundy County1
- Kendall County1
- Lake County1
- Marshall County1
- Putnam County1
- Kankakee 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.