Alert archive / Excessive Heat Warnings

Excessive Heat Warnings in the United States, 2016

105 excessive heat warnings in 2016. Each alert counts once, however many counties it covered. The archive of excessive heat warnings reaches back to 2005.

Excessive Heat Warnings by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Excessive Heat Warnings
105
Busiest month
July51 excessive heat warnings
Busiest day
July 20, 20169 excessive heat warnings

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.

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 20, 20169excessive heat warnings
  2. June 16, 20168excessive heat warnings
  3. July 19, 20168excessive heat warnings
  4. August 12, 20167excessive heat warnings
  5. July 22, 20166excessive heat warnings
  6. July 18, 20165excessive heat warnings
  7. June 15, 20164excessive heat warnings
  8. July 5, 20164excessive heat warnings
  9. July 27, 20164excessive heat warnings
  10. August 4, 20164excessive heat warnings
  11. June 1, 20163excessive heat warnings
  12. July 28, 20163excessive heat warnings
  13. August 10, 20163excessive heat warnings
  14. August 13, 20163excessive heat warnings
  15. August 17, 20163excessive heat warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive20152017

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.