Alert archive / Illinois / Winter Storm Warnings / 2021
Winter Storm Warnings in Illinois, January 2021
6 winter storm warnings in January 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 January 2021. Tap one for its archive.
- Winter Storm Warnings
- 6
- Busiest day
- January 24, 20213 winter storm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bureau County3
- Henry County3
- Putnam County3
- Henderson County2
- Mercer County2
- Warren County2
- Carroll County2
- Jo Daviess County2
- Rock Island County2
- Stephenson County2
- Whiteside County2
- Boone County2
- Cook County2
- DeKalb County2
- DuPage County2
- Grundy County2
- Kane County2
- Kendall County2
- Lake County2
- LaSalle County2
- Lee County2
- McHenry County2
- Ogle County2
- Will County2
- Winnebago County2
- Hancock County1
- McDonough County1
- Knox County1
- Marshall County1
- Stark County1
- Iroquois County1
- Kankakee County1
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.