Alert archive / Illinois / Frost Advisories / 2021
Frost Advisories in Illinois, October 2021
3 frost advisories in October 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 frost advisories reaches back to 2005.
Frost Advisories by county
Each county as a circle sized by its count in October 2021. Tap one for its archive.
- Frost Advisories
- 3
- Busiest day
- October 22, 20212 frost advisories
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 |
|---|---|---|---|---|
| Oct 22, 1:29 PM CDT | Frost Advisory | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 8 more | 19 hr |
| Oct 22, 2:22 PM CDT | Frost Advisory | DVN | Bureau, Carroll, Henry, Jo Daviess, Mercer, Putnam and 3 more | 19 hr |
| Oct 26, 7:06 PM CDT | Frost Advisory | ILX | Clark, Edgar, Vermilion | 14 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boone County1
- Cook County1
- DeKalb County1
- DuPage County1
- Grundy County1
- Kane County1
- Kendall County1
- Lake County1
- LaSalle County1
- Lee County1
- McHenry County1
- Ogle County1
- Will County1
- Winnebago County1
- Bureau County1
- Carroll County1
- Henry County1
- Jo Daviess County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Whiteside County1
- Clark County1
- Edgar County1
- Vermilion 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. Warning verification from the Mesonet's Cow. Rebuilt daily.