Alert archive / Extreme Heat Watches

Extreme Heat Watches in the United States, 2026

135 extreme heat watches in 2026. Each alert counts once, however many counties it covered. The last few weeks are still filling in as offices finish their follow-ups. 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
135
Busiest month
July60 extreme heat watches
Busiest day
June 27, 202614 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.

9 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 27, 202614extreme heat watches
  2. July 24, 202611extreme heat watches
  3. June 28, 20269extreme heat watches
  4. June 29, 20266extreme heat watches
  5. July 9, 20266extreme heat watches
  6. July 8, 20265extreme heat watches
  7. August 13, 20265extreme heat watches
  8. March 13, 20264extreme heat watches
  9. July 13, 20264extreme heat watches
  10. July 20, 20264extreme heat watches
  11. June 30, 20263extreme heat watches
  12. July 2, 20263extreme heat watches
  13. July 26, 20263extreme heat watches
  14. July 30, 20263extreme heat watches
  15. August 8, 20263extreme heat watches

Nearby

Alerts in force nowThe tornado archiveThe radar archive2025

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.