Alert archive / Illinois / Frost Advisories / 2021
Frost Advisories in Illinois, May 2021
12 frost advisories in May 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 May 2021. Tap one for its archive.
- Frost Advisories
- 12
- Busiest day
- May 7, 20213 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 |
|---|---|---|---|---|
| May 7, 1:48 PM CDT | Frost Advisory | DVN | Bureau, Carroll, Henry, Jo Daviess, Putnam, Stephenson and 1 more | 18 hr |
| May 7, 2:07 PM CDT | Frost Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 18 hr |
| May 7, 2:08 PM CDT | Frost Advisory | ILX | Champaign, DeWitt, Knox, McLean, Marshall, Peoria and 5 more | 18 hr |
| May 9, 2:18 PM CDT | Frost Advisory | LOT | Ford, Grundy, Iroquois, Kankakee, LaSalle, Livingston and 1 more | 18 hr |
| May 9, 2:48 PM CDT | Frost Advisory | ILX | Cass, Champaign, Christian, Clark, Coles, Crawford and 22 more | 16 hr |
| May 10, 2:23 PM CDT | Frost Advisory | LOT | Boone, Cook, DeKalb, DuPage, Kane, Lake and 3 more | 18 hr |
| May 10, 2:28 PM CDT | Frost Advisory | DVN | Carroll, Jo Daviess, Stephenson | 18 hr |
| May 11, 2:11 PM CDT | Frost Advisory | LOT | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more | 17 hr |
| May 11, 2:26 PM CDT | Frost Advisory | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, McDonough and 6 more | 17 hr |
| May 11, 2:34 PM CDT | Frost Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 16 hr |
| May 12, 2:41 PM CDT | Frost Advisory | LOT | DeKalb, Kane, Kankakee, Kendall, Lake, McHenry and 1 more | 16 hr |
| May 28, 3:30 AM CDT | Frost Advisory | DVN | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 28 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Carroll County4
- Jo Daviess County4
- Stephenson County4
- DeKalb County4
- Kane County4
- Kankakee County4
- Lake County4
- McHenry County4
- Will County4
- Whiteside County3
- Boone County3
- Cook County3
- DuPage County3
- Ford County3
- Grundy County3
- Iroquois County3
- Kendall County3
- LaSalle County3
- Livingston County3
- Ogle County3
- Winnebago County3
- Champaign County3
- DeWitt County3
- McLean County3
- Marshall County3
- Peoria County3
- Piatt County3
- Tazewell County3
- Vermilion County3
- Woodford County3
- Bureau County2
- Henry County2
- Putnam County2
- Lee County2
- Knox County2
- Stark County2
- Cass County2
- Christian County2
- Clark County2
- Coles County2
25 more counties
- Crawford County2
- Cumberland County2
- Douglas County2
- Edgar County2
- Effingham County2
- Jasper County2
- Logan County2
- Macon County2
- Mason County2
- Menard County2
- Morgan County2
- Moultrie County2
- Sangamon County2
- Scott County2
- Shelby County2
- Rock Island County2
- Henderson County1
- McDonough County1
- Mercer County1
- Warren County1
- Clay County1
- Fulton County1
- Lawrence County1
- Richland County1
- Schuyler 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.