Alert archive / Illinois / Mesoscale Discussions / 2015
Mesoscale Discussions in Illinois, May 2015
17 mesoscale discussions in May 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 May 2015. Tap one for its archive.
- Mesoscale Discussions
- 17
- Busiest day
- May 10, 20153 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 |
|---|---|---|---|---|
| May 8, 12:59 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 39 more | 3 hr |
| May 10, 3:52 PM CDT | Mesoscale Discussion | SPC | Adams, Alexander, Bond, Brown, Calhoun, Clinton and 24 more | 68 min |
| May 10, 5:17 PM CDT | Mesoscale Discussion | SPC | Brown, Bureau, Carroll, Cass, Christian, Fulton and 22 more | 88 min |
| May 10, 6:30 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Christian, Clay, Clinton, Edwards and 31 more | 90 min |
| May 15, 2:13 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 13 more | 2 hr |
| May 24, 3:34 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 17 more | 56 min |
| May 24, 6:04 PM CDT | Mesoscale Discussion | SPC | Alexander, Calhoun, Greene, Jackson, Jersey, Madison and 6 more | 116 min |
| May 24, 6:41 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Cass, Fulton, Grundy, Hancock and 22 more | 94 min |
| May 24, 8:41 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clinton, Fayette, Franklin, Jackson and 15 more | 64 min |
| May 24, 10:40 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 9 more | 95 min |
| May 25, 8:52 PM CDT | Mesoscale Discussion | SPC | Alexander, Pulaski, Union | 83 min |
| May 26, 11:22 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 4 more | 113 min |
| May 27, 3:53 AM CDT | Mesoscale Discussion | SPC | Jackson, Monroe, Perry, Randolph, Saint Clair | 2 hr |
| May 27, 7:57 AM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Crawford, Cumberland, Edgar and 18 more | 2 hr |
| May 27, 11:09 AM CDT | Mesoscale Discussion | SPC | Iroquois, Vermilion | 96 min |
| May 30, 10:51 AM CDT | Mesoscale Discussion | SPC | Clark, Clay, Clinton, Coles, Crawford, Cumberland and 18 more | 114 min |
| May 30, 6:23 PM CDT | Mesoscale Discussion | SPC | Clark, Coles, Crawford, Cumberland, Douglas, Edgar and 6 more | 67 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Perry County7
- Clinton County6
- Jasper County6
- Richland County6
- Alexander County6
- Saint Clair County6
- Union County6
- Bond County5
- Clark County5
- Clay County5
- Crawford County5
- Cumberland County5
- Edgar County5
- Fayette County5
- Jefferson County5
- Marion County5
- Randolph County5
- Vermilion County5
- Washington County5
- Franklin County5
- Jackson County5
- Madison County5
- Morgan County5
- Pulaski County5
- Christian County4
- Coles County4
- Douglas County4
- Effingham County4
- Marshall County4
- Montgomery County4
- Putnam County4
- Sangamon County4
- Tazewell County4
- Wayne County4
- Woodford County4
- Greene County4
- Hamilton County4
- Jersey County4
- Johnson County4
- Massac County4
60 more counties
- Monroe County4
- Williamson County4
- Schuyler County4
- Edwards County4
- Grundy County3
- Kendall County3
- LaSalle County3
- Shelby County3
- Brown County3
- Calhoun County3
- Macoupin County3
- Pike County3
- Pope County3
- Saline County3
- Scott County3
- Bureau County3
- Carroll County3
- Cass County3
- Fulton County3
- Hancock County3
- Henderson County3
- Henry County3
- Knox County3
- Lee County3
- McDonough County3
- Mason County3
- Mercer County3
- Peoria County3
- Rock Island County3
- Stark County3
- Warren County3
- Whiteside County3
- White County3
- Lawrence County3
- Wabash County3
- Champaign County2
- Cook County2
- DuPage County2
- Iroquois County2
- Logan County2
- Moultrie County2
- Piatt County2
- Adams County2
- Menard County2
- Gallatin County2
- Hardin County2
- Ogle County2
- DeWitt County1
- Ford County1
- Kankakee County1
- Livingston County1
- McLean County1
- Macon County1
- Will County1
- Boone County1
- DeKalb County1
- Kane County1
- Lake County1
- McHenry County1
- Winnebago 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.