Alert archive / Illinois / Red Flag Warnings
Red Flag Warnings in Illinois, 2018
5 red flag warnings in 2018. 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 2018. Tap one for its archive.
- Red Flag Warnings
- 5
- Busiest month
- April4 red flag warnings
- Busiest day
- April 30, 20182 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 |
|---|---|---|---|---|
| Apr 12, 12:36 PM CDT | Red Flag Warning | PAH | Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 5 more | 7 hr |
| Apr 27, 2:50 PM CDT | Red Flag Warning | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 5 hr |
| Apr 29, 8:55 PM CDT | Red Flag Warning | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 10 more | 23 hr |
| Apr 30, 4:35 PM CDT | Red Flag Warning | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 26 hr |
| May 1, 2:57 AM CDT | Red Flag Warning | ILX | Champaign, Vermilion | 16 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boone County2
- Cook County2
- DeKalb County2
- DuPage County2
- Grundy County2
- Kane County2
- Kankakee County2
- Kendall County2
- Lake County2
- LaSalle County2
- Lee County2
- Livingston County2
- McHenry County2
- Ogle County2
- Will County2
- Winnebago County2
- Alexander County1
- Gallatin County1
- Hardin County1
- Johnson County1
- Massac County1
- Pope County1
- Pulaski County1
- Saline County1
- Union County1
- White County1
- Williamson County1
- Bureau County1
- Carroll County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Ford County1
- Iroquois County1
2 more counties
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.