Alert archive / Illinois / Mesoscale Discussions / 2019
Mesoscale Discussions in Illinois, September 2019
13 mesoscale discussions in September 2019. 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 2019. Tap one for its archive.
- Mesoscale Discussions
- 13
- Busiest day
- September 12, 20193 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 2, 6:37 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Stephenson | 83 min |
| Sep 3, 3:54 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Champaign, Coles, DeKalb, DeWitt and 30 more | 2 hr |
| Sep 11, 12:48 PM CDT | Mesoscale Discussion | SPC | Boone, Lake, McHenry, Stephenson, Winnebago | 117 min |
| Sep 11, 3:33 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Cook, DeKalb, DuPage, Jo Daviess and 6 more | 117 min |
| Sep 12, 1:12 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 2 hr |
| Sep 12, 1:27 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 9 more | 93 min |
| Sep 12, 6:04 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 23 more | 116 min |
| Sep 12, 10:58 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 18 more | 2 hr |
| Sep 27, 3:01 PM CDT | Mesoscale Discussion | SPC | Bureau, Cass, Fulton, Hancock, Henderson, Henry and 18 more | 119 min |
| Sep 27, 6:21 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Cass, DeKalb, DeWitt and 30 more | 114 min |
| Sep 27, 9:18 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, DeWitt, Ford, Fulton and 18 more | 117 min |
| Sep 27, 10:45 PM CDT | Mesoscale Discussion | SPC | Brown, Cass, DeWitt, Ford, Iroquois, Livingston and 9 more | 30 min |
| Sep 29, 5:51 PM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Douglas, Edgar, Piatt, Vermilion | 54 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Stephenson County6
- Boone County6
- Bureau County6
- DeKalb County6
- DuPage County6
- Kane County6
- LaSalle County6
- McHenry County6
- Marshall County6
- Peoria County6
- Putnam County6
- Stark County6
- Woodford County6
- Carroll County5
- DeWitt County5
- Kendall County5
- Lee County5
- Livingston County5
- Logan County5
- McLean County5
- Mason County5
- Menard County5
- Ogle County5
- Tazewell County5
- Winnebago County5
- Whiteside County5
- Knox County5
- Warren County5
- Jo Daviess County4
- Ford County4
- Fulton County4
- Grundy County4
- Will County4
- Henderson County4
- Henry County4
- Cass County4
- Schuyler County4
- Lake County3
- Cook County3
- Mercer County3
Nearby
Alerts in force nowTornadoes on recordThe radar archive20182020
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.