Red Flag Warnings in Illinois
160 red flag warnings since 1986. 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 since 1986. Tap one for its archive.
- Red Flag Warnings
- 160
- Busiest year
- 201024 red flag warnings
- Average year
- 9over 18 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Kankakee County33
- Alexander County32
- Johnson County32
- Union County32
- Jackson County31
- Perry County31
- Williamson County31
- Franklin County30
- Jefferson County30
- Pulaski County30
- Grundy County30
- LaSalle County30
- Livingston County30
- Will County30
- Hamilton County29
- Saline County29
- Wayne County29
- Ford County29
- Iroquois County29
- Kendall County29
- Wabash County28
- Edwards County27
- Gallatin County27
- Hardin County27
- Massac County27
- Pope County27
- White County27
- DuPage County25
- Monroe County25
- Calhoun County24
- Cook County24
- Kane County24
- Lee County23
- Saint Clair County23
- DeKalb County22
- Jersey County22
- Randolph County22
- Madison County21
- Ogle County21
- Mercer County21
62 more counties
- Rock Island County20
- Henderson County20
- Boone County19
- Washington County19
- Winnebago County19
- Adams County19
- Hancock County19
- Clinton County18
- Greene County18
- McHenry County18
- McDonough County18
- Warren County18
- Lake County17
- Pike County17
- Bond County16
- Marion County16
- Brown County16
- Fulton County16
- Knox County15
- Henry County15
- Jo Daviess County15
- Macoupin County14
- Marshall County14
- Peoria County14
- Stark County14
- Tazewell County14
- Woodford County14
- Bureau County14
- Carroll County14
- Putnam County14
- Stephenson County14
- Whiteside County14
- Fayette County13
- Mason County13
- Champaign County12
- McLean County12
- Schuyler County12
- Vermilion County12
- Montgomery County11
- Cass County11
- Edgar County11
- Morgan County11
- Scott County11
- Clark County10
- Crawford County10
- Douglas County10
- Effingham County10
- Jasper County10
- Lawrence County10
- Logan County10
- Menard County10
- Richland County10
- Clay County9
- Coles County9
- Cumberland County9
- Piatt County9
- Sangamon County9
- DeWitt County8
- Moultrie County8
- Shelby County8
- Christian County6
- Macon County6
The latest red flag warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 1:31 PM CDT | Red Flag Warning | PAH | Alexander, Franklin, Hamilton, Jackson, Jefferson, Johnson and 5 more | 5 hr |
| Mar 29, 1:27 PM CDT | Red Flag Warning | LSX | Bond, Clinton, Fayette, Madison, Marion, Monroe and 3 more | 5 hr |
| Mar 27, 11:59 AM CDT | Red Flag Warning | DVN | Hancock, Henderson, Jo Daviess, Mercer, Rock Island | 33 hr |
| Feb 27, 1:35 AM CST | Red Flag Warning | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 4 more | 16 hr |
| Feb 27, 1:22 AM CST | Red Flag Warning | ILX | Cass, Fulton, Knox, Logan, Marshall, Mason and 9 more | 17 hr |
| Feb 27, 12:28 AM CST | Red Flag Warning | LSX | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 2 more | 18 hr |
| Feb 18, 1:00 AM CST | Red Flag Warning | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 17 hr |
| Feb 18, 12:30 AM CST | Red Flag Warning | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 18 hr |
| Feb 18, 12:18 AM CST | Red Flag Warning | ILX | Fulton, Knox, McLean, Marshall, Mason, Peoria and 3 more | 17 hr |
Nearby
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.