Alert archive / Heat Advisories

Heat Advisories in the United States, 2017

374 heat advisories in 2017. 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
374
Busiest month
July202 heat advisories
Busiest day
July 20, 201722 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 20, 201722heat advisories
  2. July 21, 201716heat advisories
  3. July 25, 201716heat advisories
  4. June 16, 201715heat advisories
  5. July 18, 201714heat advisories
  6. July 22, 201714heat advisories
  7. July 12, 201711heat advisories
  8. July 14, 201711heat advisories
  9. June 15, 20179heat advisories
  10. June 23, 20179heat advisories
  11. July 11, 20178heat advisories
  12. July 13, 20178heat advisories
  13. July 19, 20178heat advisories
  14. July 24, 20178heat advisories
  15. August 16, 20178heat advisories

Nearby

Alerts in force nowThe tornado archiveThe radar archive20162018

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.