Alert archive / Illinois / Mesoscale Discussions / 2010
Mesoscale Discussions in Illinois, December 2010
7 mesoscale discussions in December 2010. 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 December 2010. Tap one for its archive.
- Mesoscale Discussions
- 7
- Busiest day
- December 31, 20105 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 |
|---|---|---|---|---|
| Dec 3, 5:50 PM CST | Mesoscale Discussion | SPC | Jo Daviess | 5 hr |
| Dec 15, 6:18 PM CST | Mesoscale Discussion | SPC | Clay, Clinton, Crawford, Edwards, Fayette, Franklin and 18 more | 4 hr |
| Dec 31, 12:44 AM CST | Mesoscale Discussion | SPC | Calhoun | 61 min |
| Dec 31, 4:05 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Greene, Jersey, Macoupin, Madison and 3 more | 115 min |
| Dec 31, 5:45 AM CST | Mesoscale Discussion | SPC | Calhoun | 2 hr |
| Dec 31, 11:04 AM CST | Mesoscale Discussion | SPC | Alexander, Clinton, Edwards, Franklin, Hamilton, Jackson and 14 more | 56 min |
| Dec 31, 2:12 PM CST | Mesoscale Discussion | SPC | Alexander, Champaign, Clark, Clay, Coles, Crawford and 30 more | 93 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Edwards County3
- Franklin County3
- Hamilton County3
- Jackson County3
- Jefferson County3
- Johnson County3
- Marion County3
- Perry County3
- Pope County3
- Saline County3
- Washington County3
- Wayne County3
- White County3
- Williamson County3
- Calhoun County3
- Clay County2
- Clinton County2
- Crawford County2
- Fayette County2
- Jasper County2
- Lawrence County2
- Richland County2
- Alexander County2
- Massac County2
- Pulaski County2
- Union County2
- Jo Daviess County1
- Gallatin County1
- Hardin County1
- Wabash County1
- Bond County1
- Greene County1
- Jersey County1
- Macoupin County1
- Madison County1
- Monroe County1
- Montgomery County1
- Saint Clair County1
- Randolph County1
- Champaign County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20092011
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.