Alert archive / Illinois / Tornado Watches / 2011
Tornado Watches in Illinois, May 2011
8 tornado watches in May 2011. 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 tornado watches reaches back to 1997.
Tornado Watches by county
Each county as a circle sized by its count in May 2011. Tap one for its archive.
- Tornado Watches
- 8
- Busiest day
- May 25, 20115 tornado watches
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 22, 12:51 PM CDT | Tornado Watch | SPC | Adams, Bond, Brown, Bureau, Calhoun, Carroll and 42 more | 10 hr |
| May 22, 2:04 PM CDT | Tornado Watch | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 9 hr |
| May 22, 8:26 PM CDT | Tornado Watch | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clay and 35 more | 8 hr |
| May 25, 1:22 AM CDT | Tornado Watch | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 16 more | 7 hr |
| May 25, 5:46 AM CDT | Tornado Watch | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 35 more | 7 hr |
| May 25, 10:37 AM CDT | Tornado Watch | SPC | Adams, Brown, Pike | 7 hr |
| May 25, 11:09 AM CDT | Tornado Watch | SPC | Alexander, Bond, Calhoun, Christian, Clark, Clay and 41 more | 10 hr |
| May 25, 2:31 PM CDT | Tornado Watch | SPC | Bureau, Cass, Champaign, DeKalb, DeWitt, Ford and 33 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bond County4
- Calhoun County4
- Cass County4
- Champaign County4
- Christian County4
- DeWitt County4
- Greene County4
- Jersey County4
- Logan County4
- McLean County4
- Macon County4
- Macoupin County4
- Madison County4
- Marshall County4
- Mason County4
- Menard County4
- Monroe County4
- Montgomery County4
- Morgan County4
- Moultrie County4
- Peoria County4
- Piatt County4
- Saint Clair County4
- Sangamon County4
- Scott County4
- Shelby County4
- Tazewell County4
- Woodford County4
- Adams County3
- Brown County3
- Fulton County3
- Hancock County3
- McDonough County3
- Pike County3
- Schuyler County3
- Stark County3
- Ford County3
- Grundy County3
- Iroquois County3
- Kankakee County3
62 more counties
- Kendall County3
- LaSalle County3
- Livingston County3
- Will County3
- Clay County3
- Clinton County3
- Coles County3
- Cumberland County3
- Douglas County3
- Effingham County3
- Fayette County3
- Jackson County3
- Marion County3
- Perry County3
- Randolph County3
- Washington County3
- Bureau County2
- Henderson County2
- Henry County2
- Knox County2
- Mercer County2
- Putnam County2
- Warren County2
- DeKalb County2
- Lee County2
- Clark County2
- Crawford County2
- Edgar County2
- Jasper County2
- Jefferson County2
- Richland County2
- Vermilion County2
- Wayne County2
- Carroll County1
- Jo Daviess County1
- Rock Island County1
- Stephenson County1
- Whiteside County1
- Boone County1
- Cook County1
- DuPage County1
- Kane County1
- Lake County1
- McHenry County1
- Ogle County1
- Winnebago County1
- Alexander County1
- Edwards County1
- Franklin County1
- Gallatin County1
- Hamilton County1
- Hardin County1
- Johnson County1
- Lawrence County1
- Massac County1
- Pope County1
- Pulaski County1
- Saline County1
- Union County1
- Wabash County1
- White County1
- Williamson County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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. Rebuilt daily.