Alert archive / Illinois / Mesoscale Discussions / 2009
Mesoscale Discussions in Illinois, February 2009
8 mesoscale discussions in February 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 February 2009. Tap one for its archive.
- Mesoscale Discussions
- 8
- Busiest day
- February 11, 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 |
|---|---|---|---|---|
| Feb 11, 2:30 AM CST | Mesoscale Discussion | SPC | Alexander, Monroe, Randolph | 90 min |
| Feb 11, 5:26 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Jackson, Johnson, Massac, Pope and 4 more | 64 min |
| Feb 20, 11:57 PM CST | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 6 more | 5 hr |
| Feb 26, 6:57 AM CST | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Hancock and 8 more | 93 min |
| Feb 26, 9:26 AM CST | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 17 more | 2 hr |
| Feb 26, 7:42 PM CST | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Christian, Clay, Clinton and 26 more | 93 min |
| Feb 26, 10:36 PM CST | Mesoscale Discussion | SPC | Alexander, Randolph | 114 min |
| Feb 28, 11:47 AM CST | Mesoscale Discussion | SPC | Alexander | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Alexander County5
- Randolph County3
- Calhoun County3
- Greene County3
- Jersey County3
- Macoupin County3
- Morgan County3
- Sangamon County3
- Scott County3
- Monroe County2
- Franklin County2
- Jackson County2
- Union County2
- Adams County2
- Brown County2
- Cass County2
- Hancock County2
- Madison County2
- Pike County2
- Schuyler County2
- Montgomery County2
- Johnson County1
- Massac County1
- Pope County1
- Pulaski County1
- Saline County1
- Williamson County1
- Boone County1
- Carroll County1
- DeKalb County1
- DuPage County1
- Jo Daviess County1
- Kane County1
- Lake County1
- Lee County1
- McHenry County1
- Ogle County1
- Stephenson County1
- Winnebago County1
- Fulton County1
25 more counties
- Henderson County1
- Knox County1
- McDonough County1
- Mason County1
- Menard County1
- Mercer County1
- Peoria County1
- Warren County1
- Bond County1
- Christian County1
- Clay County1
- Clinton County1
- Coles County1
- Cumberland County1
- Effingham County1
- Fayette County1
- Jasper County1
- Jefferson County1
- Macon County1
- Marion County1
- Moultrie County1
- Perry County1
- Saint Clair County1
- Shelby County1
- Washington 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.