Alert archive / Illinois / Winter Storm Warnings
Winter Storm Warnings in Illinois, 2021
12 winter storm 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 winter storm warnings reaches back to 2005.
Winter Storm Warnings by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Winter Storm Warnings
- 12
- Busiest month
- January6 winter storm warnings
- Busiest day
- February 14, 20214 winter storm 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 |
|---|---|---|---|---|
| Jan 1, 4:02 AM CST | Winter Storm Warning | DVN | Bureau, Hancock, Henderson, Henry, McDonough, Mercer and 2 more | 20 hr |
| Jan 24, 2:43 PM CST | Winter Storm Warning | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 45 hr |
| Jan 24, 2:55 PM CST | Winter Storm Warning | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more | 48 hr |
| Jan 24, 3:06 PM CST | Winter Storm Warning | ILX | Knox, Marshall, Stark | 37 hr |
| Jan 29, 2:29 PM CST | Winter Storm Warning | DVN | Bureau, Carroll, Henry, Jo Daviess, Putnam, Rock Island and 2 more | 46 hr |
| Jan 29, 2:38 PM CST | Winter Storm Warning | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Iroquois and 10 more | 51 hr |
| Feb 3, 2:29 PM CST | Winter Storm Warning | LOT | Boone, Lee, Ogle, Winnebago | 36 hr |
| Feb 3, 2:56 PM CST | Winter Storm Warning | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 36 hr |
| Feb 14, 2:38 AM CST | Winter Storm Warning | ILX | Champaign, Christian, Clark, Clay, Coles, Crawford and 19 more | 48 hr |
| Feb 14, 3:00 AM CST | Winter Storm Warning | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 43 hr |
| Feb 14, 2:19 PM CST | Winter Storm Warning | LOT | Cook, DuPage, Ford, Grundy, Iroquois, Kankakee and 4 more | 49 hr |
| Feb 14, 2:44 PM CST | Winter Storm Warning | LSX | Bond, Calhoun, Clinton, Fayette, Greene, Jersey and 8 more | 31 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bureau County4
- Henry County4
- Putnam County4
- Henderson County3
- Mercer County3
- Warren County3
- Carroll County3
- Jo Daviess County3
- Rock Island County3
- Stephenson County3
- Whiteside County3
- Boone County3
- Cook County3
- DuPage County3
- Grundy County3
- Kendall County3
- Lake County3
- Lee County3
- Ogle County3
- Will County3
- Winnebago County3
- DeKalb County2
- Kane County2
- LaSalle County2
- McHenry County2
- Iroquois County2
- Kankakee County2
- Hancock County1
- McDonough County1
- Knox County1
- Marshall County1
- Stark County1
- Champaign County1
- Christian County1
- Clark County1
- Clay County1
- Coles County1
- Crawford County1
- Cumberland County1
- DeWitt County1
52 more counties
- Douglas County1
- Edgar County1
- Effingham County1
- Jasper County1
- Lawrence County1
- Logan County1
- McLean County1
- Macon County1
- Menard County1
- Morgan County1
- Moultrie County1
- Piatt County1
- Richland County1
- Sangamon County1
- Scott County1
- Shelby County1
- Vermilion County1
- Alexander County1
- Edwards County1
- Franklin County1
- Gallatin County1
- Hamilton County1
- Hardin County1
- Jackson County1
- Jefferson County1
- Johnson County1
- Massac County1
- Perry County1
- Pope County1
- Pulaski County1
- Saline County1
- Union County1
- Wabash County1
- Wayne County1
- White County1
- Williamson County1
- Ford County1
- Livingston County1
- Bond County1
- Calhoun County1
- Clinton County1
- Fayette County1
- Greene County1
- Jersey County1
- Macoupin County1
- Madison County1
- Marion County1
- Monroe County1
- Montgomery County1
- Randolph County1
- Saint Clair County1
- Washington 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.