Alert archive / Heat Advisories

Heat Advisories in the United States, 2019

628 heat advisories in 2019. 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
628
Busiest month
August248 heat advisories
Busiest day
July 18, 201932 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.

7 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 18, 201932heat advisories
  2. July 17, 201927heat advisories
  3. July 19, 201922heat advisories
  4. August 10, 201922heat advisories
  5. June 21, 201921heat advisories
  6. August 11, 201921heat advisories
  7. August 9, 201918heat advisories
  8. August 13, 201918heat advisories
  9. August 18, 201918heat advisories
  10. July 16, 201917heat advisories
  11. August 12, 201917heat advisories
  12. July 9, 201915heat advisories
  13. August 19, 201915heat advisories
  14. August 6, 201914heat advisories
  15. June 28, 201912heat advisories

Nearby

Alerts in force nowThe tornado archiveThe radar archive20182020

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.