Alert archive / Illinois / Mesoscale Discussions / 2004
Mesoscale Discussions in Illinois, April 2004
11 mesoscale discussions in April 2004. 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 2004. Tap one for its archive.
- Mesoscale Discussions
- 11
- Busiest day
- April 21, 20044 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 17, 1:25 AM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, DuPage, Jo Daviess, Kane and 7 more | 65 min |
| Apr 20, 6:00 PM CDT | Mesoscale Discussion | SPC | Bureau, Champaign, DeWitt, Ford, Fulton, Grundy and 20 more | 2 hr |
| Apr 20, 8:55 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 13 more | 65 min |
| Apr 20, 9:38 PM CDT | Mesoscale Discussion | SPC | Calhoun | 37 min |
| Apr 20, 11:10 PM CDT | Mesoscale Discussion | SPC | Brown, Calhoun, Cass, Christian, Fulton, Greene and 15 more | 2 hr |
| Apr 21, 2:58 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Jackson and 13 more | 92 min |
| Apr 24, 5:08 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 2 hr |
| Apr 24, 8:15 PM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 6 more | 60 min |
| Apr 24, 9:51 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Johnson, Massac, Pope, Saline and 2 more | 54 min |
| Apr 30, 10:59 AM CDT | Mesoscale Discussion | SPC | Adams, Alexander, Bond, Brown, Calhoun, Cass and 54 more | 2 hr |
| Apr 30, 1:52 PM CDT | Mesoscale Discussion | SPC | Alexander, Clinton, Franklin, Gallatin, Hamilton, Hardin and 15 more | 113 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Johnson County6
- Massac County6
- Pope County6
- Alexander County5
- Gallatin County5
- Pulaski County5
- Saline County5
- Union County5
- Williamson County5
- Hardin County5
- Jackson County4
- White County4
- Fulton County3
- Logan County3
- Mason County3
- Tazewell County3
- Calhoun County3
- Monroe County3
- Saint Clair County3
- Franklin County3
- Hamilton County3
- Jefferson County3
- Wayne County3
- Boone County2
- Carroll County2
- DeKalb County2
- DuPage County2
- Kane County2
- Lake County2
- Lee County2
- McHenry County2
- Ogle County2
- Stephenson County2
- Whiteside County2
- Winnebago County2
- Bureau County2
- Champaign County2
- DeWitt County2
- Grundy County2
- Kankakee County2
56 more counties
- LaSalle County2
- McLean County2
- Piatt County2
- Brown County2
- Cass County2
- Christian County2
- Greene County2
- Jersey County2
- Macoupin County2
- Madison County2
- Menard County2
- Montgomery County2
- Morgan County2
- Pike County2
- Sangamon County2
- Schuyler County2
- Scott County2
- Edwards County2
- Richland County2
- Clinton County2
- Perry County2
- Randolph County2
- Washington County2
- Jo Daviess County1
- Ford County1
- Henry County1
- Iroquois County1
- Knox County1
- Livingston County1
- McDonough County1
- Marshall County1
- Peoria County1
- Putnam County1
- Rock Island County1
- Stark County1
- Vermilion County1
- Warren County1
- Woodford County1
- Cook County1
- Kendall County1
- Will County1
- Lawrence County1
- Wabash County1
- Adams County1
- Bond County1
- Clay County1
- Coles County1
- Cumberland County1
- Douglas County1
- Effingham County1
- Fayette County1
- Jasper County1
- Macon County1
- Marion County1
- Moultrie County1
- Shelby County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20032005
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.