Alert archive

Frost Advisories in the United States

11,265 frost advisories since 1986. Each alert counts once, however many counties it covered. The archive of frost advisories reaches back to 2005.

Frost Advisories by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Frost Advisories
11,265
Busiest year
2020667 frost advisories
Average year
512over 22 years on file
Busiest day
April 21, 202435 frost advisories

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

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. April 21, 202435frost advisories
  2. October 8, 202232frost advisories
  3. September 23, 201226frost advisories
  4. May 12, 201326frost advisories
  5. October 16, 202426frost advisories
  6. October 17, 202426frost advisories
  7. October 3, 201025frost advisories
  8. May 12, 202125frost advisories
  9. May 1, 202625frost advisories
  10. May 2, 202624frost advisories
  11. October 21, 201123frost advisories
  12. April 23, 202323frost advisories
  13. October 4, 201422frost advisories
  14. May 9, 202022frost advisories
  15. October 15, 202021frost advisories

Nearby

Alerts in force nowThe tornado archiveThe radar archive

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.