Alert archive / Dense Fog Advisories

Dense Fog Advisories in the United States, 2012

1,393 dense fog advisories in 2012. Each alert counts once, however many counties it covered. The archive of dense fog advisories reaches back to 2005.

Dense Fog Advisories by state

Each state shaded by its count. Tap a state for its own archive.

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Dense Fog Advisories
1,393
Busiest month
December274 dense fog advisories
Busiest day
February 2, 201239 dense fog advisories

Over time

By month

By state

Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.

8 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. February 2, 201239dense fog advisories
  2. December 2, 201236dense fog advisories
  3. December 3, 201230dense fog advisories
  4. December 8, 201227dense fog advisories
  5. March 23, 201221dense fog advisories
  6. December 9, 201219dense fog advisories
  7. December 17, 201218dense fog advisories
  8. December 16, 201217dense fog advisories
  9. February 14, 201217dense fog advisories
  10. February 28, 201217dense fog advisories
  11. January 1, 201216dense fog advisories
  12. January 22, 201216dense fog advisories
  13. January 23, 201216dense fog advisories
  14. October 23, 201215dense fog advisories
  15. November 21, 201215dense fog advisories

Nearby

Alerts in force nowThe tornado archiveThe 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. Rebuilt daily.