Alert archive / Excessive Heat Warnings

Excessive Heat Warnings in the United States, 2009

38 excessive heat warnings in 2009. 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
38
Busiest month
June14 excessive heat warnings
Busiest day
June 23, 20097 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. June 23, 20097excessive heat warnings
  2. June 21, 20092excessive heat warnings
  3. June 22, 20092excessive heat warnings
  4. July 16, 20092excessive heat warnings
  5. July 26, 20092excessive heat warnings
  6. August 26, 20092excessive heat warnings
  7. August 27, 20092excessive heat warnings
  8. August 28, 20092excessive heat warnings
  9. June 24, 20091excessive heat warnings
  10. June 25, 20091excessive heat warnings
  11. June 27, 20091excessive heat warnings
  12. July 10, 20091excessive heat warnings
  13. July 11, 20091excessive heat warnings
  14. July 12, 20091excessive heat warnings
  15. July 17, 20091excessive heat warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive20082010

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.