Alert archive / Illinois / Severe Thunderstorm Watches

Severe Thunderstorm Watches in Illinois, 2017

32 severe thunderstorm watches in 2017. 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 severe thunderstorm watches reaches back to 1997.

Severe Thunderstorm Watches by county

Each county as a circle sized by its count in 2017. Tap one for its archive.

Severe Thunderstorm Watches
32
Busiest month
May7 severe thunderstorm watches
Busiest day
May 27, 20173 severe thunderstorm 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 6, 10:35 PM CSTSevere Thunderstorm WatchSPCBoone, Champaign, Christian, Coles, Cook, DeKalb and 25 more4 hr
Mar 9, 5:02 PM CSTSevere Thunderstorm WatchSPCAlexander, Johnson, Massac, Pulaski, Union5 hr
Mar 30, 12:31 PM CDTSevere Thunderstorm WatchSPCAlexander, Bond, Cass, Champaign, Christian, Clark and 51 more7 hr
Apr 5, 3:08 PM CDTSevere Thunderstorm WatchSPCClark, Clay, Crawford, Edwards, Gallatin, Hamilton and 7 more5 hr
Apr 10, 1:48 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cass, Champaign, Christian and 48 more8 hr
Apr 19, 8:57 PM CDTSevere Thunderstorm WatchSPCRock Island4 hr
Apr 26, 12:46 PM CDTSevere Thunderstorm WatchSPCAlexander, Bond, Clark, Clay, Clinton, Crawford and 19 more6 hr
Apr 28, 10:01 PM CDTSevere Thunderstorm WatchSPCAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 7 more9 hr
Apr 29, 3:57 PM CDTSevere Thunderstorm WatchSPCAlexander, Bond, Christian, Clark, Clay, Clinton and 38 more6 hr
May 10, 12:59 PM CDTSevere Thunderstorm WatchSPCAdams, Brown, Bureau, Cass, DeWitt, Fulton and 22 more7 hr
May 10, 7:07 PM CDTSevere Thunderstorm WatchSPCChampaign, Christian, Clark, Coles, Cumberland, Douglas and 6 more5 hr
May 15, 7:52 PM CDTSevere Thunderstorm WatchSPCBoone, DeKalb, Jo Daviess, Kane, McHenry, Ogle and 2 more3 hr
May 19, 4:16 AM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more3 hr
May 27, 1:36 PM CDTSevere Thunderstorm WatchSPCAlexander, Clinton, Edwards, Franklin, Gallatin, Hamilton and 20 more7 hr
May 27, 5:13 PM CDTSevere Thunderstorm Watch PDSSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more7 hr
May 27, 6:26 PM CDTSevere Thunderstorm WatchSPCMonroe, Randolph3 hr
Jun 14, 12:40 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 35 more7 hr
Jun 14, 1:04 PM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Calhoun, Cass, Champaign and 35 more9 hr
Jun 16, 10:25 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 9 more5 hr
Jun 17, 5:39 PM CDTSevere Thunderstorm WatchSPCAdams, Boone, Brown, Bureau, Cass, Champaign and 45 more7 hr
Jun 17, 10:53 PM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Christian, Clay, Clinton, Coles and 22 more6 hr
Jun 18, 2:34 AM CDTSevere Thunderstorm WatchSPCAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more3 hr
Jul 7, 12:45 PM CDTSevere Thunderstorm WatchSPCFord, Iroquois, Kankakee, Vermilion7 hr
Jul 10, 3:58 PM CDTSevere Thunderstorm WatchSPCBureau, Carroll, Champaign, Cook, DeKalb, DeWitt and 29 more7 hr
Jul 19, 5:45 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 17 more6 hr
Jul 21, 4:52 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 28 more9 hr
Jul 23, 12:38 AM CDTSevere Thunderstorm WatchSPCAdams, Bond, Brown, Calhoun, Cass, Clinton and 13 more5 hr
Jul 23, 3:32 AM CDTSevere Thunderstorm WatchSPCChristian, Clark, Clay, Coles, Crawford, Cumberland and 14 more4 hr
Aug 10, 2:47 PM CDTSevere Thunderstorm WatchSPCBoone, Bureau, Carroll, Cook, DeKalb, DuPage and 17 more6 hr
Sep 4, 4:00 PM CDTSevere Thunderstorm WatchSPCBond, Calhoun, Champaign, Christian, Clark, Clay and 29 more6 hr
Nov 18, 11:04 AM CSTSevere Thunderstorm WatchSPCAlexander, Clark, Clay, Clinton, Coles, Crawford and 28 more8 hr
Dec 4, 2:34 PM CSTSevere Thunderstorm WatchSPCAdams, Brown, Pike5 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. May 27, 20173severe thunderstorm watches
  2. April 29, 20172severe thunderstorm watches
  3. June 14, 20172severe thunderstorm watches
  4. June 17, 20172severe thunderstorm watches
  5. June 18, 20172severe thunderstorm watches
  6. July 23, 20172severe thunderstorm watches
  7. March 7, 20171severe thunderstorm watches
  8. March 9, 20171severe thunderstorm watches
  9. March 30, 20171severe thunderstorm watches
  10. April 5, 20171severe thunderstorm watches
  11. April 10, 20171severe thunderstorm watches
  12. April 20, 20171severe thunderstorm watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20162018

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.