Alert archive / Illinois / Flood Watches

Flood Watches in Illinois, 2025

33 flood watches in 2025. 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 flood watches reaches back to 2005.

Flood Watches by county

Each county as a circle sized by its count in 2025. Tap one for its archive.

Flood Watches
33
Busiest month
July16 flood watches
Busiest day
January 31, 20253 flood 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
Jan 29, 12:43 PM CSTFlood WatchPAHAlexander, Gallatin, Hardin, Johnson, Massac, Pope and 4 more37 hr
Jan 31, 1:07 AM CSTFlood WatchLOTCook, DeKalb, DuPage, Grundy, Kane, Kankakee and 5 more14 hr
Jan 31, 1:40 AM CSTFlood WatchDVNBureau, Henderson, Henry, Mercer, Putnam, Rock Island and 2 more13 hr
Jan 31, 3:28 AM CSTFlood WatchILXKnox, Marshall, Stark11 hr
Feb 13, 1:30 AM CSTFlood WatchPAHAlexander, Gallatin, Hamilton, Hardin, Johnson, Massac and 6 more3 days
Mar 31, 12:40 PM CDTFlood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more6 days
Mar 31, 2:04 PM CDTFlood WatchILXChampaign, Christian, Clark, Clay, Coles, Crawford and 13 more5 days
Apr 1, 1:53 PM CDTFlood WatchLSXBond, Clinton, Fayette, Jersey, Macoupin, Madison and 6 more4 days
Apr 17, 1:54 PM CDTFlood WatchLSXBond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more3 days
Jun 16, 1:40 AM CDTFlood WatchPAHAlexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more22 hr
Jun 18, 10:28 AM CDTFlood WatchLOTCook, DuPage, Grundy, Kankakee, Kendall, LaSalle and 2 more11 hr
Jul 10, 5:33 PM CDTFlood WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more7 hr
Jul 10, 7:17 PM CDTFlood WatchDVNBureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more30 hr
Jul 11, 2:49 AM CDTFlood WatchILXKnox, Marshall, Stark22 hr
Jul 11, 3:37 AM CDTFlood WatchLOTBoone, Lee, Ogle, Winnebago18 hr
Jul 18, 12:59 PM CDTFlood WatchDVNHancock, Henderson, Henry, McDonough, Mercer, Rock Island and 1 more47 hr
Jul 20, 1:44 AM CDTFlood WatchLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 9 more33 hr
Jul 20, 1:45 AM CDTFlood WatchILXCass, Champaign, Christian, Clark, Clay, Coles and 29 more30 hr
Jul 20, 1:58 AM CDTFlood WatchPAHEdwards, Hamilton, Jefferson, Wabash, Wayne, White30 hr
Jul 24, 2:18 AM CDTFlood WatchLSXAdams, Brown, Pike25 hr
Jul 25, 11:49 AM CDTFlood WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more27 hr
Jul 25, 1:20 PM CDTFlood WatchDVNBureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more24 hr
Jul 25, 1:26 PM CDTFlood WatchILXKnox, Marshall, Stark24 hr
Jul 26, 1:45 PM CDTFlood WatchILXCass, Champaign, Christian, DeWitt, Logan, McLean and 9 more13 hr
Jul 30, 2:27 AM CDTFlood WatchDVNBureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more11 hr
Jul 30, 2:58 AM CDTFlood WatchILXCass, DeWitt, Fulton, Knox, Logan, McLean and 8 more11 hr
Jul 30, 3:18 AM CDTFlood WatchLOTBoone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more25 hr
Aug 8, 2:15 PM CDTFlood WatchDVNCarroll, Hancock, Henderson, Henry, Jo Daviess, Mercer and 4 more53 hr
Aug 9, 3:00 PM CDTFlood WatchLSXAdams23 hr
Aug 9, 7:47 PM CDTFlood WatchLOTBoone, Lake, McHenry, Winnebago14 hr
Aug 12, 11:33 AM CDTFlood WatchLOTCook, DuPage, Will8 hr
Aug 16, 9:33 PM CDTFlood WatchDVNCarroll, Jo Daviess, Stephenson12 hr
Aug 18, 2:21 PM CDTFlood WatchLOTBoone, Cook, DeKalb, DuPage, Grundy, Kane and 9 more13 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. January 31, 20253flood watches
  2. July 11, 20253flood watches
  3. July 20, 20253flood watches
  4. July 25, 20253flood watches
  5. July 30, 20253flood watches
  6. March 31, 20252flood watches
  7. January 29, 20251flood watches
  8. February 13, 20251flood watches
  9. April 1, 20251flood watches
  10. April 17, 20251flood watches
  11. June 16, 20251flood watches
  12. June 18, 20251flood watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20242026

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.