Alert archive / Illinois / Mesoscale Discussions / 2018
Mesoscale Discussions in Illinois, December 2018
2 mesoscale discussions in December 2018. 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 2018. Tap one for its archive.
- Mesoscale Discussions
- 2
- Busiest day
- December 1, 20182 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 1, 1:48 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 26 more | 117 min |
| Dec 1, 5:17 PM CST | Mesoscale Discussion | SPC | Cass, Christian, DeWitt, Ford, Fulton, Knox and 17 more | 88 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cass County2
- Christian County2
- DeWitt County2
- Fulton County2
- Logan County2
- Macon County2
- Macoupin County2
- Madison County2
- Mason County2
- Menard County2
- Montgomery County2
- Morgan County2
- Peoria County2
- Sangamon County2
- Tazewell County2
- Adams County1
- Bond County1
- Brown County1
- Calhoun County1
- Clinton County1
- Fayette County1
- Greene County1
- Jersey County1
- McDonough County1
- Marion County1
- Monroe County1
- Pike County1
- Saint Clair County1
- Schuyler County1
- Scott County1
- Shelby County1
- Washington County1
- Ford County1
- Knox County1
- Livingston County1
- McLean County1
- Marshall County1
- Piatt County1
- Stark County1
- Woodford County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.