Alert archive / Illinois / Mesoscale Discussions / 2015
Mesoscale Discussions in Illinois, August 2015
9 mesoscale discussions in August 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 August 2015. Tap one for its archive.
- Mesoscale Discussions
- 9
- Busiest day
- August 18, 20154 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 |
|---|---|---|---|---|
| Aug 2, 8:02 PM CDT | Mesoscale Discussion | SPC | Cook, Lake | 118 min |
| Aug 2, 11:19 PM CDT | Mesoscale Discussion | SPC | Ford, Grundy, Iroquois, Kankakee, Will | 86 min |
| Aug 9, 3:55 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Jackson, Johnson, Monroe, Perry and 6 more | 2 hr |
| Aug 15, 1:43 PM CDT | Mesoscale Discussion | SPC | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 11 more | 2 hr |
| Aug 18, 12:49 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Calhoun, Carroll, Cass and 33 more | 116 min |
| Aug 18, 3:16 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 27 more | 119 min |
| Aug 18, 3:53 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Henderson, Henry and 16 more | 2 hr |
| Aug 18, 6:35 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Champaign, Christian, Clark, Clay and 41 more | 115 min |
| Aug 18, 8:00 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 9 more | 90 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Winnebago County4
- Ford County3
- Grundy County3
- Iroquois County3
- Kankakee County3
- Will County3
- Monroe County3
- Perry County3
- Randolph County3
- Saint Clair County3
- Washington County3
- Boone County3
- DeKalb County3
- LaSalle County3
- Lee County3
- Ogle County3
- Stephenson County3
- Logan County3
- Macoupin County3
- Cook County2
- Lake County2
- Alexander County2
- Franklin County2
- Jackson County2
- Johnson County2
- Pulaski County2
- Union County2
- Williamson County2
- DuPage County2
- Kane County2
- Kendall County2
- Livingston County2
- McHenry County2
- Adams County2
- Brown County2
- Bureau County2
- Calhoun County2
- Carroll County2
- Cass County2
- Greene County2
58 more counties
- Henderson County2
- Henry County2
- Jersey County2
- Jo Daviess County2
- Knox County2
- Marshall County2
- Mason County2
- Menard County2
- Mercer County2
- Morgan County2
- Peoria County2
- Pike County2
- Putnam County2
- Rock Island County2
- Sangamon County2
- Schuyler County2
- Scott County2
- Stark County2
- Warren County2
- Whiteside County2
- Woodford County2
- Bond County2
- Christian County2
- Clinton County2
- DeWitt County2
- Effingham County2
- Fayette County2
- Macon County2
- Madison County2
- Marion County2
- Montgomery County2
- Moultrie County2
- Piatt County2
- Shelby County2
- Fulton County1
- Hancock County1
- McDonough County1
- Tazewell County1
- Champaign County1
- Clark County1
- Clay County1
- Coles County1
- Crawford County1
- Cumberland County1
- Douglas County1
- Edgar County1
- Edwards County1
- Gallatin County1
- Hamilton County1
- Jasper County1
- Jefferson County1
- Lawrence County1
- Richland County1
- Saline County1
- Vermilion County1
- Wabash County1
- Wayne County1
- White County1
Nearby
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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.