Alert archive / Illinois / Mesoscale Discussions / 2012
Mesoscale Discussions in Illinois, February 2012
4 mesoscale discussions in February 2012. 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 2012. Tap one for its archive.
- Mesoscale Discussions
- 4
- Busiest day
- February 29, 20122 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 23, 2:21 PM CST | Mesoscale Discussion | SPC | Gallatin, Hamilton, Hardin, Johnson, Massac, Pope and 3 more | 84 min |
| Feb 23, 8:45 PM CST | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Henry and 11 more | 5 hr |
| Feb 29, 12:49 AM CST | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Edwards, Franklin and 24 more | 56 min |
| Feb 29, 3:53 AM CST | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Crawford, Edwards and 25 more | 97 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Gallatin County3
- Hamilton County3
- Hardin County3
- Johnson County3
- Massac County3
- Pope County3
- Saline County3
- White County3
- Williamson County3
- Alexander County2
- Bond County2
- Clay County2
- Clinton County2
- Edwards County2
- Franklin County2
- Jackson County2
- Jefferson County2
- Lawrence County2
- Marion County2
- Perry County2
- Pulaski County2
- Randolph County2
- Richland County2
- Union County2
- Wabash County2
- Washington County2
- Wayne County2
- Boone County1
- Bureau County1
- Carroll County1
- DeKalb County1
- DuPage County1
- Henry County1
- Jo Daviess County1
- Kane County1
- Lake County1
- Lee County1
- McHenry County1
- Mercer County1
- Ogle County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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. Rebuilt daily.