Alert archive / Heat Advisories

Heat Advisories in the United States, 2023

1,559 heat advisories in 2023. 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
1,559
Busiest month
July560 heat advisories
Busiest day
July 26, 202335 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 26, 202335heat advisories
  2. July 19, 202333heat advisories
  3. July 27, 202332heat advisories
  4. August 11, 202332heat advisories
  5. June 28, 202331heat advisories
  6. July 13, 202328heat advisories
  7. August 13, 202328heat advisories
  8. August 21, 202327heat advisories
  9. July 24, 202326heat advisories
  10. July 29, 202326heat advisories
  11. August 18, 202326heat advisories
  12. August 20, 202326heat advisories
  13. July 12, 202325heat advisories
  14. August 17, 202325heat advisories
  15. June 27, 202324heat 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.