Alert archive / Heat Advisories

Heat Advisories in the United States, 2024

1,480 heat advisories in 2024. Each alert counts once, however many counties it covered. The archive of heat advisories reaches back to 2005.

Heat Advisories by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Heat Advisories
1,480
Busiest month
July532 heat advisories
Busiest day
July 15, 202443 heat 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. July 15, 202443heat advisories
  2. July 14, 202437heat advisories
  3. July 31, 202437heat advisories
  4. August 1, 202436heat advisories
  5. July 30, 202431heat advisories
  6. June 23, 202430heat advisories
  7. July 29, 202430heat advisories
  8. August 2, 202430heat advisories
  9. July 3, 202429heat advisories
  10. June 24, 202428heat advisories
  11. July 8, 202428heat advisories
  12. June 29, 202426heat advisories
  13. July 4, 202425heat advisories
  14. July 5, 202424heat advisories
  15. July 12, 202424heat advisories

Nearby

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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.