Alert archive / Illinois / Red Flag Warnings
Red Flag Warnings in Illinois, 2025
19 red flag warnings 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 red flag warnings reaches back to 2005.
Red Flag Warnings by county
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Red Flag Warnings
- 19
- Busiest month
- March14 red flag warnings
- Busiest day
- March 14, 20254 red flag warnings
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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 1:50 PM CST | Red Flag Warning | DVN | Hancock, Henderson, Henry, McDonough, Mercer, Rock Island and 1 more | 28 hr |
| Feb 28, 2:31 AM CST | Red Flag Warning | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 17 hr |
| Feb 28, 10:47 AM CST | Red Flag Warning | LOT | Ford, Iroquois, Kankakee, Livingston | 7 hr |
| Feb 28, 10:58 AM CST | Red Flag Warning | ILX | Cass, Champaign, Christian, Clark, Coles, Cumberland and 24 more | 7 hr |
| Mar 10, 3:24 AM CDT | Red Flag Warning | DVN | Mercer, Rock Island | 17 hr |
| Mar 14, 2:20 AM CDT | Red Flag Warning | ILX | Fulton, Knox, McLean, Marshall, Peoria, Stark and 2 more | 18 hr |
| Mar 14, 2:31 AM CDT | Red Flag Warning | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 19 hr |
| Mar 14, 3:32 AM CDT | Red Flag Warning | LSX | Adams | 13 hr |
| Mar 14, 4:11 AM CDT | Red Flag Warning | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 20 hr |
| Mar 16, 2:43 PM CDT | Red Flag Warning | LSX | Adams, Brown, Calhoun, Greene, Jersey, Pike | 29 hr |
| Mar 17, 2:59 AM CDT | Red Flag Warning | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 17 hr |
| Mar 17, 3:02 AM CDT | Red Flag Warning | ILX | Cass, Fulton, Knox, Marshall, Mason, Morgan and 6 more | 17 hr |
| Mar 18, 9:06 PM CDT | Red Flag Warning | PAH | Alexander, Franklin, Hamilton, Jackson, Jefferson, Johnson and 6 more | 23 hr |
| Mar 18, 9:07 PM CDT | Red Flag Warning | DVN | Hancock, McDonough | 17 hr |
| Mar 18, 9:07 PM CDT | Red Flag Warning | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 22 hr |
| Mar 18, 9:17 PM CDT | Red Flag Warning | ILX | Cass, Christian, Clay, DeWitt, Effingham, Fulton and 11 more | 22 hr |
| Mar 20, 2:30 PM CDT | Red Flag Warning | LSX | Adams, Bond, Brown, Calhoun, Clinton, Greene and 9 more | 29 hr |
| Mar 20, 2:41 PM CDT | Red Flag Warning | PAH | Alexander, Jackson, Johnson, Perry, Pulaski, Union and 1 more | 28 hr |
| May 16, 9:31 AM CDT | Red Flag Warning | LOT | DeKalb, Grundy, Kane, Kendall, LaSalle, Lee | 9 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Adams County5
- Hancock County4
- McDonough County4
- Mercer County4
- Rock Island County4
- Brown County4
- Calhoun County4
- Greene County4
- Jersey County4
- Pike County4
- Fulton County4
- Henderson County3
- Henry County3
- Warren County3
- Bond County3
- Clinton County3
- Macoupin County3
- Madison County3
- Monroe County3
- Montgomery County3
- Randolph County3
- Saint Clair County3
- Washington County3
- Cass County3
- Knox County3
- Marshall County3
- Mason County3
- Morgan County3
- Peoria County3
- Schuyler County3
- Scott County3
- Stark County3
- Tazewell County3
- Woodford County3
- Fayette County2
- Marion County2
- Ford County2
- Iroquois County2
- Kankakee County2
- Livingston County2
51 more counties
- Christian County2
- DeWitt County2
- Effingham County2
- Logan County2
- McLean County2
- Macon County2
- Menard County2
- Moultrie County2
- Piatt County2
- Sangamon County2
- Shelby County2
- Bureau County2
- Carroll County2
- Jo Daviess County2
- Putnam County2
- Stephenson County2
- Whiteside County2
- DeKalb County2
- Grundy County2
- Kane County2
- Kendall County2
- LaSalle County2
- Lee County2
- Alexander County2
- Jackson County2
- Johnson County2
- Perry County2
- Pulaski County2
- Union County2
- Williamson County2
- Champaign County1
- Clark County1
- Coles County1
- Cumberland County1
- Douglas County1
- Edgar County1
- Vermilion County1
- Boone County1
- Cook County1
- DuPage County1
- Lake County1
- McHenry County1
- Ogle County1
- Will County1
- Winnebago County1
- Franklin County1
- Hamilton County1
- Jefferson County1
- Saline County1
- Wayne County1
- Clay County1
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.