Alert archive / Illinois / Tornado Watches / 2021
Tornado Watches in Illinois, October 2021
3 tornado watches in October 2021. 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 October 2021. Tap one for its archive.
- Tornado Watches
- 3
- Busiest day
- October 24, 20212 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 |
|---|---|---|---|---|
| Oct 11, 3:10 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cass, Champaign, Christian and 45 more | 6 hr |
| Oct 24, 2:06 PM CDT | Tornado Watch | SPC | Adams, Brown, Calhoun, Greene, Jersey, Pike | 9 hr |
| Oct 24, 5:44 PM CDT | Tornado Watch | SPC | Alexander, Bond, Cass, Champaign, Christian, Clark and 47 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Cass County2
- Champaign County2
- Christian County2
- Clark County2
- Coles County2
- Cumberland County2
- DeWitt County2
- Douglas County2
- Edgar County2
- Effingham County2
- Logan County2
- Macon County2
- Mason County2
- Menard County2
- Morgan County2
- Moultrie County2
- Piatt County2
- Sangamon County2
- Shelby County2
- Vermilion County2
- Boone County1
- Bureau County1
- Carroll County1
- Cook County1
- DeKalb County1
- DuPage County1
- Ford County1
- Fulton County1
- Grundy County1
- Henry County1
- Iroquois County1
- Kane County1
- Kankakee County1
- Kendall County1
- Knox County1
- Lake County1
- LaSalle County1
- Lee County1
- Livingston County1
- McHenry County1
50 more counties
- McLean County1
- Marshall County1
- Ogle County1
- Peoria County1
- Putnam County1
- Stark County1
- Tazewell County1
- Whiteside County1
- Will County1
- Winnebago County1
- Woodford County1
- Adams County1
- Brown County1
- Calhoun County1
- Greene County1
- Jersey County1
- Pike County1
- Alexander County1
- Bond County1
- Clay County1
- Clinton County1
- Crawford County1
- Edwards County1
- Fayette County1
- Franklin County1
- Hamilton County1
- Jackson County1
- Jasper County1
- Jefferson County1
- Johnson County1
- Lawrence County1
- Macoupin County1
- Madison County1
- Marion County1
- Monroe County1
- Montgomery County1
- Perry County1
- Pulaski County1
- Randolph County1
- Richland County1
- Saint Clair County1
- Saline County1
- Schuyler County1
- Scott County1
- Union County1
- Wabash County1
- Washington County1
- Wayne County1
- White County1
- Williamson County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.