Alert archive / Illinois / Dense Fog Advisories / 2017
Dense Fog Advisories in Illinois, August 2017
11 dense fog advisories in August 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 August 2017. Tap one for its archive.
- Dense Fog Advisories
- 11
- Busiest day
- August 29, 20174 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 |
|---|---|---|---|---|
| Aug 15, 4:04 AM CDT | Dense Fog Advisory | PAH | Alexander, Jackson, Johnson, Massac, Pulaski, Union | 5 hr |
| Aug 28, 2:18 AM CDT | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 9 hr |
| Aug 28, 2:34 AM CDT | Dense Fog Advisory | ILX | Cass, Fulton, Knox, Marshall, Mason, Menard and 7 more | 6 hr |
| Aug 28, 3:47 AM CDT | Dense Fog Advisory | LSX | Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 1 more | 7 hr |
| Aug 28, 11:07 PM CDT | Dense Fog Advisory | ILX | Cass, Christian, DeWitt, Fulton, Knox, Logan and 14 more | 11 hr |
| Aug 29, 2:02 AM CDT | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 9 more | 7 hr |
| Aug 29, 2:41 AM CDT | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 8 hr |
| Aug 29, 4:15 AM CDT | Dense Fog Advisory | LSX | Adams, Bond, Brown, Calhoun, Clinton, Greene and 9 more | 6 hr |
| Aug 30, 4:30 AM CDT | Dense Fog Advisory | LOT | Boone, DeKalb, DuPage, Ford, Grundy, Iroquois and 9 more | 5 hr |
| Aug 30, 4:37 AM CDT | Dense Fog Advisory | ILX | Cass, Champaign, Christian, DeWitt, Douglas, Fulton and 18 more | 4 hr |
| Aug 30, 4:52 AM CDT | Dense Fog Advisory | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Bureau County3
- Carroll County3
- Hancock County3
- Henderson County3
- Henry County3
- Jo Daviess County3
- McDonough County3
- Mercer County3
- Putnam County3
- Rock Island County3
- Stephenson County3
- Warren County3
- Whiteside County3
- Cass County3
- Fulton County3
- Knox County3
- Marshall County3
- Mason County3
- Menard County3
- Morgan County3
- Peoria County3
- Schuyler County3
- Scott County3
- Stark County3
- Tazewell County3
- Woodford County3
- Adams County2
- Brown County2
- Calhoun County2
- Greene County2
- Jersey County2
- Macoupin County2
- Pike County2
- Christian County2
- DeWitt County2
- Logan County2
- McLean County2
- Macon County2
- Piatt County2
- Sangamon County2
33 more counties
- Boone County2
- DeKalb County2
- DuPage County2
- Ford County2
- Grundy County2
- Iroquois County2
- Kane County2
- Kankakee County2
- Kendall County2
- LaSalle County2
- Lee County2
- Livingston County2
- McHenry County2
- Ogle County2
- Winnebago County2
- Alexander County1
- Jackson County1
- Johnson County1
- Massac County1
- Pulaski County1
- Union County1
- Bond County1
- Clinton County1
- Madison County1
- Monroe County1
- Montgomery County1
- Randolph County1
- Saint Clair County1
- Washington County1
- Champaign County1
- Douglas County1
- Moultrie County1
- Vermilion 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.