Alert archive / Illinois / Tornado Watches

Tornado Watches in Illinois, 2021

15 tornado watches in 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 2021. Tap one for its archive.

Tornado Watches
15
Busiest month
December6 tornado watches
Busiest day
October 24, 20212 tornado watches

Over time

By month

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.

IssuedProductOfficeCountiesLasted
Mar 25, 3:48 PM CDTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more7 hr
Jun 24, 11:47 PM CDTTornado WatchSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 18 more4 hr
Jun 26, 12:05 PM CDTTornado WatchSPCCass, Champaign, Christian, Coles, Cook, Cumberland and 24 more9 hr
Jul 9, 8:18 PM CDTTornado WatchSPCAdams, Brown, Calhoun, Cass, Greene, Jersey and 9 more6 hr
Jul 14, 6:13 PM CDTTornado WatchSPCCarroll, Jo Daviess, Rock Island, Stephenson, Whiteside6 hr
Aug 9, 2:43 PM CDTTornado WatchSPCBoone, Bureau, Cook, DeKalb, DuPage, Grundy and 11 more9 hr
Oct 11, 3:10 PM CDTTornado WatchSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 45 more6 hr
Oct 24, 2:06 PM CDTTornado WatchSPCAdams, Brown, Calhoun, Greene, Jersey, Pike9 hr
Oct 24, 5:44 PM CDTTornado WatchSPCAlexander, Bond, Cass, Champaign, Christian, Clark and 47 more7 hr
Dec 5, 8:59 PM CSTTornado WatchSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Johnson and 7 more7 hr
Dec 10, 3:07 PM CSTTornado WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 17 more11 hr
Dec 10, 5:17 PM CSTTornado WatchSPCAdams, Bond, Brown, Calhoun, Cass, Christian and 18 more6 hr
Dec 10, 7:47 PM CSTTornado WatchSPCChampaign, Clark, Clay, Coles, Crawford, Cumberland and 21 more8 hr
Dec 10, 11:03 PM CSTTornado WatchSPCAlexander, Clinton, Edwards, Fayette, Franklin, Gallatin and 17 more5 hr
Dec 15, 5:30 PM CSTTornado WatchSPCBureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more6 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

62 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. October 24, 20212tornado watches
  2. December 10, 20212tornado watches
  3. December 11, 20212tornado watches
  4. March 25, 20211tornado watches
  5. June 25, 20211tornado watches
  6. June 26, 20211tornado watches
  7. July 10, 20211tornado watches
  8. July 14, 20211tornado watches
  9. August 9, 20211tornado watches
  10. October 11, 20211tornado watches
  11. December 6, 20211tornado watches
  12. December 15, 20211tornado watches

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. Rebuilt daily.