Alert archive / Illinois / Dense Fog Advisories / 2012
Dense Fog Advisories in Illinois, February 2012
18 dense fog advisories in February 2012. 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 2012. Tap one for its archive.
- Dense Fog Advisories
- 18
- Busiest day
- February 2, 20126 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 1, 5:24 AM CST | Dense Fog Advisory | DVN | Rock Island | 8 hr |
| Feb 1, 7:47 AM CST | Dense Fog Advisory | PAH | Alexander, Franklin, Gallatin, Hamilton, Jackson, Johnson and 7 more | 3 hr |
| Feb 1, 7:31 PM CST | Dense Fog Advisory | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, McDonough and 6 more | 18 hr |
| Feb 1, 10:14 PM CST | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 9 more | 15 hr |
| Feb 2, 12:07 AM CST | Dense Fog Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 29 more | 12 hr |
| Feb 2, 3:17 AM CST | Dense Fog Advisory | LSX | Bond, Clinton, Fayette, Macoupin, Madison, Marion and 1 more | 5 hr |
| Feb 2, 4:18 AM CST | Dense Fog Advisory | PAH | Edwards, Wabash, Wayne, White | 6 hr |
| Feb 2, 10:08 AM CST | Dense Fog Advisory | PAH | Wabash | 112 min |
| Feb 2, 6:06 PM CST | Dense Fog Advisory | DVN | Bureau, Carroll, Henderson, Henry, Jo Daviess, Mercer and 5 more | 20 hr |
| Feb 2, 8:43 PM CST | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 9 more | 15 hr |
| Feb 3, 3:07 AM CST | Dense Fog Advisory | ILX | Knox, McLean, Marshall, Peoria, Stark, Tazewell and 1 more | 8 hr |
| Feb 5, 3:55 AM CST | Dense Fog Advisory | LOT | Iroquois | 8 hr |
| Feb 5, 11:42 PM CST | Dense Fog Advisory | LSX | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 5 more | 9 hr |
| Feb 6, 2:45 AM CST | Dense Fog Advisory | ILX | Cass, Champaign, Christian, Clark, Clay, Coles and 23 more | 9 hr |
| Feb 6, 2:49 AM CST | Dense Fog Advisory | LOT | Ford, Iroquois, Kankakee, Livingston | 9 hr |
| Feb 16, 1:12 AM CST | Dense Fog Advisory | LOT | Boone, DeKalb, Ford, Grundy, Kane, Kendall and 7 more | 4 hr |
| Feb 17, 1:00 AM CST | Dense Fog Advisory | PAH | Edwards, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 3 hr |
| Feb 23, 6:29 AM CST | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Grundy, Kane, Kendall and 4 more | 91 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Boone County4
- DeKalb County4
- Ford County4
- Grundy County4
- Iroquois County4
- Kane County4
- Kendall County4
- Lee County4
- Livingston County4
- McHenry County4
- Ogle County4
- Winnebago County4
- Rock Island County3
- White County3
- DuPage County3
- Kankakee County3
- LaSalle County3
- McLean County3
- Tazewell County3
- Woodford County3
- Wabash County3
- Franklin County2
- Gallatin County2
- Hamilton County2
- Jackson County2
- Johnson County2
- Pope County2
- Saline County2
- Union County2
- Williamson County2
- Bureau County2
- Carroll County2
- Henderson County2
- Henry County2
- Jo Daviess County2
- Mercer County2
- Putnam County2
- Stephenson County2
- Warren County2
- Whiteside County2
57 more counties
- Cass County2
- Champaign County2
- Christian County2
- Clark County2
- Clay County2
- Coles County2
- Crawford County2
- Cumberland County2
- DeWitt County2
- Douglas County2
- Edgar County2
- Effingham County2
- Jasper County2
- Knox County2
- Lawrence County2
- Logan County2
- Macon County2
- Marshall County2
- Mason County2
- Menard County2
- Morgan County2
- Moultrie County2
- Peoria County2
- Piatt County2
- Richland County2
- Sangamon County2
- Scott County2
- Shelby County2
- Stark County2
- Vermilion County2
- Macoupin County2
- Madison County2
- Montgomery County2
- Edwards County2
- Wayne County2
- Alexander County1
- Massac County1
- Pulaski County1
- McDonough County1
- Fulton County1
- Schuyler County1
- Bond County1
- Clinton County1
- Fayette County1
- Marion County1
- Adams County1
- Brown County1
- Calhoun County1
- Greene County1
- Jersey County1
- Monroe County1
- Pike County1
- Saint Clair County1
- Lake County1
- Hardin County1
- Jefferson County1
- Perry County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.