Alert archive / Illinois / Dense Fog Advisories / 2017
Dense Fog Advisories in Illinois, February 2017
19 dense fog advisories in February 2017. 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 dense fog advisories reaches back to 2005.
Dense Fog Advisories by county
Each county as a circle sized by its count in February 2017. Tap one for its archive.
- Dense Fog Advisories
- 19
- Busiest day
- February 22, 20175 dense fog 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 |
|---|---|---|---|---|
| Feb 6, 4:56 PM CST | Dense Fog Advisory | ILX | Champaign, Clark, Coles, DeWitt, Douglas, Edgar and 14 more | 13 hr |
| Feb 6, 7:07 PM CST | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more | 19 hr |
| Feb 6, 9:10 PM CST | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 15 hr |
| Feb 19, 1:00 AM CST | Dense Fog Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 22 more | 10 hr |
| Feb 19, 1:14 AM CST | Dense Fog Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 10 hr |
| Feb 19, 1:24 AM CST | Dense Fog Advisory | LSX | Bond, Clinton, Fayette, Jersey, Macoupin, Madison and 6 more | 10 hr |
| Feb 19, 6:09 AM CST | Dense Fog Advisory | LOT | Ford, Iroquois, Livingston | 6 hr |
| Feb 19, 9:18 PM CST | Dense Fog Advisory | PAH | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 9 hr |
| Feb 19, 10:08 PM CST | Dense Fog Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 11 hr |
| Feb 19, 10:15 PM CST | Dense Fog Advisory | LSX | Bond, Clinton, Fayette, Greene, Jersey, Macoupin and 7 more | 8 hr |
| Feb 20, 3:41 AM CST | Dense Fog Advisory | LOT | Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 1 more | 6 hr |
| Feb 21, 10:42 PM CST | Dense Fog Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 10 hr |
| Feb 21, 10:51 PM CST | Dense Fog Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 12 hr |
| Feb 21, 11:34 PM CST | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 10 more | 11 hr |
| Feb 22, 12:26 AM CST | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 10 hr |
| Feb 22, 7:01 AM CST | Dense Fog Advisory | PAH | Edwards, Franklin, Gallatin, Hamilton, Jefferson, Perry and 5 more | 3 hr |
| Feb 23, 4:25 AM CST | Dense Fog Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 22 more | 6 hr |
| Feb 23, 5:52 AM CST | Dense Fog Advisory | LSX | Calhoun, Fayette, Greene, Jersey, Macoupin, Marion and 2 more | 3 hr |
| Feb 23, 7:02 AM CST | Dense Fog Advisory | LOT | Ford, Iroquois, Kankakee | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Champaign County5
- Clark County5
- Coles County5
- DeWitt County5
- Douglas County5
- Edgar County5
- Logan County5
- McLean County5
- Macon County5
- Mason County5
- Moultrie County5
- Piatt County5
- Tazewell County5
- Vermilion County5
- Ford County5
- Iroquois County5
- Woodford County4
- Kankakee County4
- Livingston County4
- Cass County4
- Christian County4
- Clay County4
- Crawford County4
- Cumberland County4
- Effingham County4
- Jasper County4
- Lawrence County4
- Menard County4
- Morgan County4
- Richland County4
- Sangamon County4
- Shelby County4
- Fayette County4
- Jersey County4
- Macoupin County4
- Marion County4
- Montgomery County4
- Fulton County3
- Knox County3
- Marshall County3
60 more counties
- Peoria County3
- Stark County3
- Grundy County3
- Kendall County3
- LaSalle County3
- Edwards County3
- Franklin County3
- Gallatin County3
- Hamilton County3
- Jefferson County3
- Perry County3
- Saline County3
- Wabash County3
- Wayne County3
- White County3
- Williamson County3
- Bond County3
- Clinton County3
- Madison County3
- Monroe County3
- Randolph County3
- Saint Clair County3
- Washington County3
- Scott County3
- Greene County3
- Boone County2
- DeKalb County2
- DuPage County2
- Kane County2
- Lake County2
- Lee County2
- McHenry County2
- Ogle County2
- Winnebago County2
- Bureau County2
- Carroll County2
- Hancock County2
- Henderson County2
- Henry County2
- Jo Daviess County2
- McDonough County2
- Mercer County2
- Putnam County2
- Rock Island County2
- Stephenson County2
- Warren County2
- Whiteside County2
- Alexander County2
- Hardin County2
- Jackson County2
- Johnson County2
- Massac County2
- Pope County2
- Pulaski County2
- Union County2
- Schuyler County2
- Calhoun County2
- Pike County2
- Adams County1
- Brown County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.