Alert archive / Illinois / Mesoscale Discussions / 2012
Mesoscale Discussions in Illinois, December 2012
8 mesoscale discussions in December 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 December 2012. Tap one for its archive.
- Mesoscale Discussions
- 8
- Busiest day
- December 9, 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 |
|---|---|---|---|---|
| Dec 3, 3:29 PM CST | Mesoscale Discussion | SPC | Adams, Boone, Brown, Bureau, Carroll, Cass and 35 more | 91 min |
| Dec 9, 12:38 PM CST | Mesoscale Discussion | SPC | Alexander, Massac, Pulaski | 2 hr |
| Dec 9, 5:54 PM CST | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 1 more | 96 min |
| Dec 20, 7:49 AM CST | Mesoscale Discussion | SPC | Hancock, Henderson, Mercer, Rock Island | 4 hr |
| Dec 20, 10:52 AM CST | Mesoscale Discussion | SPC | Adams, Boone, Brown, Bureau, Calhoun, Carroll and 43 more | 6 hr |
| Dec 25, 8:00 PM CST | Mesoscale Discussion | SPC | Alexander, Johnson, Massac, Pope, Pulaski, Union | 6 hr |
| Dec 26, 2:25 AM CST | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Crawford, Edwards, Franklin and 18 more | 6 hr |
| Dec 28, 3:44 PM CST | Mesoscale Discussion | SPC | Alexander, Clay, Clinton, Crawford, Edwards, Franklin and 24 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Alexander County5
- Massac County5
- Pulaski County5
- Johnson County4
- Pope County4
- Hancock County3
- Henderson County3
- Mercer County3
- Rock Island County3
- Gallatin County3
- Hardin County3
- Union County3
- Adams County2
- Boone County2
- Brown County2
- Bureau County2
- Carroll County2
- Cass County2
- DeKalb County2
- Fulton County2
- Grundy County2
- Henry County2
- Knox County2
- LaSalle County2
- Lee County2
- Livingston County2
- Logan County2
- McDonough County2
- Marshall County2
- Mason County2
- Menard County2
- Ogle County2
- Peoria County2
- Putnam County2
- Schuyler County2
- Scott County2
- Stark County2
- Stephenson County2
- Tazewell County2
- Warren County2
46 more counties
- Whiteside County2
- Winnebago County2
- Woodford County2
- Clay County2
- Crawford County2
- Edwards County2
- Franklin County2
- Hamilton County2
- Jackson County2
- Jasper County2
- Jefferson County2
- Lawrence County2
- Richland County2
- Saline County2
- Wabash County2
- Wayne County2
- White County2
- Williamson County2
- DuPage County1
- Jo Daviess County1
- Kane County1
- Kendall County1
- McHenry County1
- Will County1
- Calhoun County1
- Christian County1
- DeWitt County1
- Greene County1
- Jersey County1
- McLean County1
- Macon County1
- Macoupin County1
- Montgomery County1
- Morgan County1
- Moultrie County1
- Piatt County1
- Pike County1
- Sangamon County1
- Clark County1
- Clinton County1
- Marion County1
- Monroe County1
- Perry County1
- Randolph County1
- Saint Clair County1
- Washington 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.