Alert archive / Illinois / Flash Flood Watches

Flash Flood Watches in Illinois, 2020

39 flash flood watches in 2020. 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 flash flood watches reaches back to 2005.

Flash Flood Watches by county

Each county as a circle sized by its count in 2020. Tap one for its archive.

Flash Flood Watches
39
Busiest month
May8 flash flood watches
Busiest day
May 14, 20204 flash 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 8, 2:31 PM CSTFlash Flood WatchLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more61 hr
Jan 8, 2:59 PM CSTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more3 days
Jan 11, 2:55 AM CSTFlash Flood WatchILXSangamon51 hr
Feb 11, 10:28 AM CSTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more34 hr
Mar 12, 10:05 AM CDTFlash Flood WatchPAHEdwards, Gallatin, Hamilton, Jefferson, Wabash, Wayne and 1 more10 hr
Mar 19, 2:36 AM CDTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more25 hr
Mar 19, 3:43 AM CDTFlash Flood WatchLSXBond, Clinton, Fayette, Marion, Monroe, Randolph and 2 more21 hr
Mar 19, 3:47 AM CDTFlash Flood WatchILXClay, Crawford, Effingham, Jasper, Lawrence, Richland and 1 more45 hr
May 14, 3:45 AM CDTFlash Flood WatchLSXAdams, Brown, Pike25 hr
May 14, 11:38 AM CDTFlash Flood WatchDVNBureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more19 hr
May 14, 11:55 AM CDTFlash Flood WatchILXCass, Fulton, Knox, Marshall, Mason, Peoria and 4 more16 hr
May 14, 12:06 PM CDTFlash Flood WatchLOTCook, DeKalb, DuPage, Grundy, Kane, Kankakee and 6 more17 hr
May 16, 2:47 PM CDTFlash Flood WatchLOTCook, DeKalb, DuPage, Ford, Grundy, Iroquois and 8 more32 hr
May 16, 8:58 PM CDTFlash Flood WatchLSXBond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more21 hr
May 16, 9:06 PM CDTFlash Flood WatchILXCass, Champaign, Christian, DeWitt, Douglas, Logan and 15 more34 hr
May 18, 7:20 AM CDTFlash Flood WatchILXSangamon24 hr
Jun 8, 3:23 AM CDTFlash Flood WatchDVNHancock, Henderson, Jo Daviess, Mercer, Rock Island40 hr
Jun 27, 8:40 PM CDTFlash Flood WatchPAHEdwards, Gallatin, Hamilton, Jefferson, Wabash, Wayne and 1 more16 hr
Jun 28, 1:52 PM CDTFlash Flood WatchPAHGallatin, Hamilton, Hardin, Saline, White4 hr
Jun 29, 3:09 AM CDTFlash Flood WatchLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more58 hr
Jun 29, 3:21 AM CDTFlash Flood WatchILXCass, Christian, Clay, Effingham, Jasper, Menard and 6 more58 hr
Jun 29, 3:56 AM CDTFlash Flood WatchDVNHancock, McDonough57 hr
Jun 30, 3:26 AM CDTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more40 hr
Jul 19, 4:35 PM CDTFlash Flood WatchLSXBond, Calhoun, Clinton, Fayette, Jersey, Macoupin and 6 more8 hr
Jul 19, 11:03 PM CDTFlash Flood WatchILXClay, Crawford, Effingham, Jasper, Lawrence, Richland5 hr
Jul 20, 1:58 PM CDTFlash Flood WatchPAHAlexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 7 more5 hr
Jul 29, 2:35 PM CDTFlash Flood WatchLSXBond, Clinton, Fayette, Madison, Marion, Monroe and 3 more33 hr
Jul 30, 1:52 AM CDTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more22 hr
Jul 30, 2:58 AM CDTFlash Flood WatchILXClay, Crawford, Effingham, Jasper, Lawrence, Richland17 hr
Jul 31, 3:25 AM CDTFlash Flood WatchLSXCalhoun, Jersey, Madison, Monroe, Randolph, Saint Clair21 hr
Jul 31, 3:32 AM CDTFlash Flood WatchPAHAlexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more20 hr
Aug 8, 2:18 PM CDTFlash Flood WatchLSXBond, Calhoun, Clinton, Greene, Jersey, Macoupin and 7 more20 hr
Aug 12, 11:33 AM CDTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 12 more7 hr
Aug 13, 9:49 AM CDTFlash Flood WatchLSXBond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more9 hr
Aug 13, 10:56 AM CDTFlash Flood WatchPAHAlexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 12 more9 hr
Aug 27, 3:22 AM CDTFlash Flood WatchPAHAlexander, Hardin, Massac, Pope, Pulaski35 hr
Sep 2, 1:51 PM CDTFlash Flood WatchPAHAlexander, Hardin, Massac, Pope, Pulaski17 hr
Sep 11, 2:19 PM CDTFlash Flood WatchLSXAdams, Brown, Pike20 hr
Sep 11, 2:28 PM CDTFlash Flood WatchDVNHancock, Henderson, McDonough, Mercer, Rock Island, Warren15 hr

By county

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

56 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 14, 20204flash flood watches
  2. March 19, 20203flash flood watches
  3. June 29, 20203flash flood watches
  4. January 8, 20202flash flood watches
  5. May 17, 20202flash flood watches
  6. June 28, 20202flash flood watches
  7. July 20, 20202flash flood watches
  8. July 30, 20202flash flood watches
  9. July 31, 20202flash flood watches
  10. August 13, 20202flash flood watches
  11. September 11, 20202flash flood watches
  12. January 11, 20201flash flood watches

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

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.