Alert archive / Ohio / Dense Fog Advisories / 2021
Dense Fog Advisories in Ohio, December 2021
8 dense fog advisories in December 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 dense fog advisories reaches back to 2005.
Dense Fog Advisories by county
Each county as a circle sized by its count in December 2021. Tap one for its archive.
- Dense Fog Advisories
- 8
- Busiest day
- December 4, 20213 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 4, 12:59 AM EST | Dense Fog Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 10 hr |
| Dec 4, 1:25 AM EST | Dense Fog Advisory | CLE | Crawford, Hancock, Lucas, Marion, Ottawa, Sandusky and 3 more | 8 hr |
| Dec 4, 4:23 AM EST | Dense Fog Advisory | ILN | Auglaize, Champaign, Clark, Darke, Delaware, Greene and 9 more | 7 hr |
| Dec 9, 8:54 PM EST | Dense Fog Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 15 hr |
| Dec 27, 11:13 AM EST | Dense Fog Advisory | IWX | Defiance, Fulton, Henry, Paulding, Putnam, Williams | 8 hr |
| Dec 29, 4:35 AM EST | Dense Fog Advisory | CLE | Ashtabula, Cuyahoga, Erie, Geauga, Huron, Lorain and 10 more | 5 hr |
| Dec 30, 5:38 PM EST | Dense Fog Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 6 hr |
| Dec 30, 5:50 PM EST | Dense Fog Advisory | CLE | Hancock, Lucas, Wood | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Defiance County4
- Fulton County4
- Henry County4
- Paulding County4
- Putnam County4
- Williams County4
- Allen County3
- Van Wert County3
- Lucas County3
- Wood County3
- Hancock County2
- Ottawa County2
- Sandusky County2
- Seneca County2
- Crawford County1
- Marion County1
- Wyandot County1
- Auglaize County1
- Champaign County1
- Clark County1
- Darke County1
- Delaware County1
- Greene County1
- Hardin County1
- Logan County1
- Madison County1
- Mercer County1
- Miami County1
- Montgomery County1
- Preble County1
- Shelby County1
- Union County1
- Ashtabula County1
- Cuyahoga County1
- Erie County1
- Geauga County1
- Huron County1
- Lorain County1
- Mahoning County1
- Medina County1
3 more counties
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.