Alert archive / Extreme Heat Watches

Extreme Heat Watches in the United States, 2025

117 extreme heat watches in 2025. Each alert counts once, however many counties it covered. The archive of extreme heat watches reaches back to 2005.

Extreme Heat Watches by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Extreme Heat Watches
117
Busiest month
June48 extreme heat watches
Busiest day
June 20, 202513 extreme heat watches

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.

3 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 20, 202513extreme heat watches
  2. July 26, 202513extreme heat watches
  3. June 18, 202510extreme heat watches
  4. June 22, 20256extreme heat watches
  5. July 25, 20256extreme heat watches
  6. August 18, 20256extreme heat watches
  7. June 21, 20254extreme heat watches
  8. July 21, 20254extreme heat watches
  9. July 28, 20254extreme heat watches
  10. June 19, 20253extreme heat watches
  11. July 18, 20253extreme heat watches
  12. July 27, 20253extreme heat watches
  13. August 20, 20253extreme heat watches
  14. May 26, 20252extreme heat watches
  15. June 6, 20252extreme heat watches

Nearby

Alerts in force nowThe tornado archiveThe radar archive20242026

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. Warning verification from the Mesonet's Cow. Rebuilt daily.