Alert archive / Ohio / Dense Fog Advisories

Dense Fog Advisories in Ohio, 2021

30 dense fog advisories in 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 2021. Tap one for its archive.

Dense Fog Advisories
30
Busiest month
December8 dense fog advisories
Busiest day
August 20, 20213 dense fog advisories

Over time

By month

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.

IssuedProductOfficeCountiesLasted
Feb 3, 11:07 PM ESTDense Fog AdvisoryILNAuglaize, Champaign, Clark, Darke, Delaware, Greene and 7 more10 hr
Feb 4, 12:01 AM ESTDense Fog AdvisoryIWXAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more3 hr
Mar 17, 7:24 AM EDTDense Fog AdvisoryILNAdams, Auglaize, Brown, Butler, Champaign, Clark and 20 more4 hr
Mar 17, 7:26 AM EDTDense Fog AdvisoryCLEAshland, Crawford, Cuyahoga, Erie, Hancock, Huron and 9 more4 hr
Apr 24, 11:31 PM EDTDense Fog AdvisoryIWXAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more6 hr
Apr 25, 3:18 AM EDTDense Fog AdvisoryILNAuglaize, Butler, Champaign, Clark, Clermont, Clinton and 16 more6 hr
May 26, 10:50 PM EDTDense Fog AdvisoryILNAdams, Auglaize, Brown, Butler, Champaign, Clark and 21 more10 hr
Jun 4, 1:50 AM EDTDense Fog AdvisoryILNAdams, Brown, Butler, Champaign, Clark, Clermont and 11 more7 hr
Jun 4, 3:55 AM EDTDense Fog AdvisoryCLEAshland, Ashtabula, Geauga, Holmes, Knox, Marion and 8 more5 hr
Aug 18, 5:45 AM EDTDense Fog AdvisoryIWXAllen, Defiance, Paulding, Putnam, Van Wert3 hr
Aug 19, 3:37 PM EDTDense Fog AdvisoryILNAdams, Brown, Butler, Clermont, Clinton, Fairfield and 13 more17 hr
Aug 20, 1:00 AM EDTDense Fog AdvisoryRLXAthens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more9 hr
Aug 20, 1:17 AM EDTDense Fog AdvisoryCLEAshtabula, Mahoning, Stark, Trumbull8 hr
Aug 20, 1:57 AM EDTDense Fog AdvisoryPBZBelmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 5 more7 hr
Sep 16, 3:14 AM EDTDense Fog AdvisoryCLEHolmes, Mahoning, Portage, Stark, Summit, Trumbull and 1 more8 hr
Sep 16, 6:06 AM EDTDense Fog AdvisoryILNScioto4 hr
Oct 5, 4:19 AM EDTDense Fog AdvisoryILNAdams, Auglaize, Brown, Butler, Champaign, Clark and 26 more6 hr
Oct 5, 5:00 AM EDTDense Fog AdvisoryCLEAshland, Ashtabula, Crawford, Geauga, Hancock, Holmes and 14 more5 hr
Oct 5, 5:12 AM EDTDense Fog AdvisoryIWXAllen, Defiance, Henry, Paulding, Putnam, Van Wert5 hr
Oct 9, 1:03 AM EDTDense Fog AdvisoryIWXDefiance, Fulton, Henry, Paulding, Williams8 hr
Nov 9, 11:36 PM ESTDense Fog AdvisoryIWXAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more9 hr
Nov 10, 5:33 AM ESTDense Fog AdvisoryILNAuglaize, Champaign, Clark, Darke, Delaware, Franklin and 7 more3 hr
Dec 4, 12:59 AM ESTDense Fog AdvisoryIWXAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more10 hr
Dec 4, 1:25 AM ESTDense Fog AdvisoryCLECrawford, Hancock, Lucas, Marion, Ottawa, Sandusky and 3 more8 hr
Dec 4, 4:23 AM ESTDense Fog AdvisoryILNAuglaize, Champaign, Clark, Darke, Delaware, Greene and 9 more7 hr
Dec 9, 8:54 PM ESTDense Fog AdvisoryIWXAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more15 hr
Dec 27, 11:13 AM ESTDense Fog AdvisoryIWXDefiance, Fulton, Henry, Paulding, Putnam, Williams8 hr
Dec 29, 4:35 AM ESTDense Fog AdvisoryCLEAshtabula, Cuyahoga, Erie, Geauga, Huron, Lorain and 10 more5 hr
Dec 30, 5:38 PM ESTDense Fog AdvisoryIWXAllen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more6 hr
Dec 30, 5:50 PM ESTDense Fog AdvisoryCLEHancock, Lucas, Wood7 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

47 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. August 20, 20213dense fog advisories
  2. October 5, 20213dense fog advisories
  3. December 4, 20213dense fog advisories
  4. February 4, 20212dense fog advisories
  5. March 17, 20212dense fog advisories
  6. April 25, 20212dense fog advisories
  7. June 4, 20212dense fog advisories
  8. September 16, 20212dense fog advisories
  9. November 10, 20212dense fog advisories
  10. December 30, 20212dense fog advisories
  11. May 27, 20211dense fog advisories
  12. August 18, 20211dense fog advisories

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.