Alert archive / Illinois / Red Flag Warnings
Red Flag Warnings in Illinois, 2021
5 red flag warnings in 2021. 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 2021. Tap one for its archive.
- Red Flag Warnings
- 5
- Busiest month
- March5 red flag warnings
- Busiest day
- March 29, 20213 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 |
|---|---|---|---|---|
| Mar 28, 2:55 PM CDT | Red Flag Warning | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 29 hr |
| Mar 29, 3:00 AM CDT | Red Flag Warning | LSX | Adams, Brown | 17 hr |
| Mar 29, 3:21 AM CDT | Red Flag Warning | ILX | Fulton, Knox, Marshall, Peoria, Schuyler, Stark | 17 hr |
| Mar 29, 4:25 AM CDT | Red Flag Warning | LOT | Boone, Lee, Ogle, Winnebago | 16 hr |
| Mar 31, 4:31 AM CDT | Red Flag Warning | LSX | Calhoun | 14 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bureau County1
- Carroll County1
- Hancock County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- McDonough County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Adams County1
- Brown County1
- Fulton County1
- Knox County1
- Marshall County1
- Peoria County1
- Schuyler County1
- Stark County1
- Boone County1
- Lee County1
- Ogle County1
- Winnebago County1
- Calhoun County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.