Alert archive / Dense Fog Advisories

Dense Fog Advisories in the United States, 2011

1,188 dense fog advisories in 2011. 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
1,188
Busiest month
December196 dense fog advisories
Busiest day
December 13, 201124 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.

10 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. December 13, 201124dense fog advisories
  2. December 14, 201124dense fog advisories
  3. February 16, 201120dense fog advisories
  4. February 27, 201119dense fog advisories
  5. January 18, 201118dense fog advisories
  6. November 21, 201116dense fog advisories
  7. February 17, 201115dense fog advisories
  8. December 21, 201114dense fog advisories
  9. December 30, 201114dense fog advisories
  10. December 31, 201114dense fog advisories
  11. January 26, 201114dense fog advisories
  12. January 17, 201113dense fog advisories
  13. February 18, 201113dense fog advisories
  14. February 19, 201113dense fog advisories
  15. September 23, 201113dense fog advisories

Nearby

Alerts in force nowThe tornado archiveThe radar archive20102012

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.