Alert archive / Illinois / Mesoscale Discussions / 2009
Mesoscale Discussions in Illinois, April 2009
18 mesoscale discussions in April 2009. 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 2009. Tap one for its archive.
- Mesoscale Discussions
- 18
- Busiest day
- April 19, 20094 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 2, 2:04 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Pope, Saline, Wabash, White | 116 min |
| Apr 5, 10:50 AM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Bureau, Cass, Champaign, Christian and 67 more | 115 min |
| Apr 5, 2:02 PM CDT | Mesoscale Discussion | SPC | Edwards, Gallatin, Hardin, Johnson, Lawrence, Massac and 4 more | 88 min |
| Apr 6, 1:04 AM CDT | Mesoscale Discussion | SPC | Kankakee | 4 hr |
| Apr 10, 12:50 AM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 19 more | 85 min |
| Apr 10, 1:26 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Pope, Saline, White | 64 min |
| Apr 19, 12:14 PM CDT | Mesoscale Discussion | SPC | Alexander, Pulaski, Union | 61 min |
| Apr 19, 2:22 PM CDT | Mesoscale Discussion | SPC | Alexander | 53 min |
| Apr 19, 3:49 PM CDT | Mesoscale Discussion | SPC | Alexander | 56 min |
| Apr 19, 5:47 PM CDT | Mesoscale Discussion | SPC | Massac, Pope, Pulaski | 58 min |
| Apr 23, 7:08 PM CDT | Mesoscale Discussion | SPC | Fulton, Knox, McDonough, Warren | 97 min |
| Apr 25, 1:55 PM CDT | Mesoscale Discussion | SPC | Cook, Will | 95 min |
| Apr 25, 5:32 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Brown, Bureau, Carroll, Cass and 40 more | 73 min |
| Apr 25, 9:23 PM CDT | Mesoscale Discussion | SPC | Hancock, Henderson, Knox, McDonough, Mercer, Warren | 67 min |
| Apr 26, 2:00 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, Lee and 4 more | 60 min |
| Apr 26, 5:14 PM CDT | Mesoscale Discussion | SPC | Jo Daviess, Stephenson | 61 min |
| Apr 27, 5:08 PM CDT | Mesoscale Discussion | SPC | Alexander, Jackson, Johnson, Pulaski, Union, Williamson | 97 min |
| Apr 27, 5:34 PM CDT | Mesoscale Discussion | SPC | Brown, Cass, Fulton, Greene, Logan, Mason and 7 more | 56 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Pope County6
- Alexander County6
- Gallatin County5
- Hardin County5
- Saline County5
- White County5
- Pulaski County5
- Wabash County4
- Fulton County4
- Johnson County4
- Knox County4
- Massac County4
- Union County4
- Cass County3
- Edwards County3
- Jackson County3
- Kankakee County3
- Lawrence County3
- Mason County3
- Menard County3
- Morgan County3
- Tazewell County3
- Will County3
- Williamson County3
- McDonough County3
- Warren County3
- Jo Daviess County3
- Stephenson County3
- Bureau County2
- Clay County2
- Franklin County2
- Grundy County2
- Hamilton County2
- Jefferson County2
- LaSalle County2
- Livingston County2
- Logan County2
- McLean County2
- Marion County2
- Marshall County2
61 more counties
- Peoria County2
- Perry County2
- Putnam County2
- Randolph County2
- Richland County2
- Sangamon County2
- Stark County2
- Washington County2
- Wayne County2
- Woodford County2
- Cook County2
- Boone County2
- Brown County2
- Carroll County2
- DeKalb County2
- Hancock County2
- Henderson County2
- Kane County2
- Lee County2
- McHenry County2
- Mercer County2
- Ogle County2
- Pike County2
- Schuyler County2
- Scott County2
- Winnebago County2
- Bond County1
- Champaign County1
- Christian County1
- Clark County1
- Clinton County1
- Coles County1
- Crawford County1
- Cumberland County1
- DeWitt County1
- Douglas County1
- Edgar County1
- Effingham County1
- Fayette County1
- Ford County1
- Iroquois County1
- Jasper County1
- Jersey County1
- Macon County1
- Macoupin County1
- Madison County1
- Monroe County1
- Montgomery County1
- Moultrie County1
- Piatt County1
- Saint Clair County1
- Shelby County1
- Vermilion County1
- Adams County1
- DuPage County1
- Henry County1
- Kendall County1
- Lake County1
- Rock Island County1
- Whiteside County1
- Greene County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.