Alert archive / Illinois / Mesoscale Discussions / 2017
Mesoscale Discussions in Illinois, April 2017
23 mesoscale discussions in April 2017. 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 April 2017. Tap one for its archive.
- Mesoscale Discussions
- 23
- Busiest day
- April 29, 20175 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 |
|---|---|---|---|---|
| Apr 3, 5:02 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Clinton, Crawford, Edwards, Effingham and 23 more | 58 min |
| Apr 5, 1:59 PM CDT | Mesoscale Discussion | SPC | Wabash | 3 hr |
| Apr 5, 4:47 PM CDT | Mesoscale Discussion | SPC | Edwards, Lawrence, Wabash, White | 88 min |
| Apr 10, 1:53 AM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 9 more | 2 hr |
| Apr 10, 11:57 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Cook, DeKalb, DuPage, Ford and 23 more | 3 hr |
| Apr 10, 3:25 PM CDT | Mesoscale Discussion | SPC | Bond, Boone, Bureau, Cass, Champaign, Christian and 54 more | 2 hr |
| Apr 10, 6:22 PM CDT | Mesoscale Discussion | SPC | Champaign, Christian, Coles, Cook, DeWitt, Douglas and 19 more | 53 min |
| Apr 10, 8:58 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 9 more | 62 min |
| Apr 15, 5:06 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Mercer, Rock Island, Stephenson, Whiteside | 84 min |
| Apr 16, 2:02 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 17 more | 2 hr |
| Apr 19, 10:06 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 54 min |
| Apr 20, 2:07 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more | 53 min |
| Apr 26, 12:26 PM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Clinton, Edwards, Franklin, Hamilton and 16 more | 94 min |
| Apr 26, 3:53 PM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Coles, Crawford, Cumberland and 16 more | 97 min |
| Apr 26, 6:10 PM CDT | Mesoscale Discussion | SPC | Hardin, Massac, Pope | 95 min |
| Apr 28, 1:10 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clark, Clay, Clinton, Coles and 35 more | 2 hr |
| Apr 28, 4:59 PM CDT | Mesoscale Discussion | SPC | Massac | 91 min |
| Apr 28, 6:28 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 3 hr |
| Apr 28, 11:55 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 6 more | 95 min |
| Apr 29, 3:39 AM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 96 min |
| Apr 29, 12:50 PM CDT | Mesoscale Discussion | SPC | Monroe, Randolph, Saint Clair | 85 min |
| Apr 29, 3:28 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Crawford, Edwards, Effingham and 20 more | 2 hr |
| Apr 29, 6:30 PM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Coles, Crawford, Cumberland and 25 more | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Saline County11
- Alexander County10
- Jackson County10
- Johnson County10
- Massac County10
- White County10
- Williamson County10
- Edwards County9
- Franklin County9
- Gallatin County9
- Hamilton County9
- Hardin County9
- Pope County9
- Pulaski County9
- Union County9
- Wabash County9
- Clay County8
- Jasper County8
- Lawrence County8
- Randolph County8
- Effingham County7
- Jefferson County7
- Perry County7
- Richland County7
- Wayne County7
- Crawford County6
- Marion County6
- Coles County6
- Clinton County5
- Washington County5
- Clark County5
- Cumberland County5
- Fayette County5
- Shelby County5
- Ford County4
- Iroquois County4
- Kankakee County4
- Douglas County4
- Moultrie County4
- Saint Clair County4
55 more counties
- Bureau County3
- Jo Daviess County3
- Lee County3
- Ogle County3
- Stark County3
- Cook County3
- DuPage County3
- Grundy County3
- Kane County3
- Kendall County3
- Lake County3
- Livingston County3
- McLean County3
- Will County3
- Bond County3
- Champaign County3
- Edgar County3
- Madison County3
- Montgomery County3
- Piatt County3
- Vermilion County3
- Carroll County2
- Henry County2
- Knox County2
- Mercer County2
- Rock Island County2
- Stephenson County2
- Whiteside County2
- Boone County2
- DeKalb County2
- Fulton County2
- LaSalle County2
- McHenry County2
- Marshall County2
- Peoria County2
- Putnam County2
- Tazewell County2
- Winnebago County2
- Woodford County2
- Christian County2
- DeWitt County2
- Jersey County2
- Logan County2
- Macon County2
- Macoupin County2
- Monroe County2
- Hancock County1
- Henderson County1
- Warren County1
- Cass County1
- Greene County1
- Mason County1
- Menard County1
- Morgan County1
- Sangamon County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.