Alert archive / Illinois / Mesoscale Discussions / 2015
Mesoscale Discussions in Illinois, September 2015
6 mesoscale discussions in September 2015. 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 September 2015. Tap one for its archive.
- Mesoscale Discussions
- 6
- Busiest day
- September 8, 20152 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 |
|---|---|---|---|---|
| Sep 8, 9:52 AM CDT | Mesoscale Discussion | SPC | Adams, Boone, Brown, Bureau, Cass, DeKalb and 25 more | 113 min |
| Sep 8, 1:29 PM CDT | Mesoscale Discussion | SPC | Champaign, Coles, DeWitt, Douglas, Edgar, Ford and 7 more | 91 min |
| Sep 10, 12:47 PM CDT | Mesoscale Discussion | SPC | Bureau, DeKalb, DuPage, Ford, Fulton, Grundy and 22 more | 58 min |
| Sep 10, 8:22 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 5 more | 113 min |
| Sep 17, 1:49 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, DeKalb, DuPage, Grundy, Henry and 14 more | 116 min |
| Sep 18, 5:20 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 9 more | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fulton County4
- McDonough County4
- Will County4
- Adams County3
- Brown County3
- Bureau County3
- Cass County3
- DeKalb County3
- DuPage County3
- Grundy County3
- Hancock County3
- Kane County3
- Kendall County3
- Knox County3
- LaSalle County3
- Marshall County3
- Mason County3
- Putnam County3
- Schuyler County3
- Stark County3
- Henderson County3
- Warren County3
- Boone County2
- Lake County2
- Lee County2
- Livingston County2
- Logan County2
- McHenry County2
- Menard County2
- Ogle County2
- Peoria County2
- Tazewell County2
- Woodford County2
- Ford County2
- Iroquois County2
- Kankakee County2
- Henry County2
- Pike County2
- Scott County2
- Champaign County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20142016
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.