Alert archive / Heat Advisories

Heat Advisories in the United States, 2011

613 heat advisories in 2011. 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
613
Busiest month
July308 heat advisories
Busiest day
July 20, 201125 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.

4 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 20, 201125heat advisories
  2. July 22, 201123heat advisories
  3. July 11, 201122heat advisories
  4. July 21, 201121heat advisories
  5. July 31, 201120heat advisories
  6. June 29, 201118heat advisories
  7. August 3, 201118heat advisories
  8. July 28, 201117heat advisories
  9. July 19, 201116heat advisories
  10. July 23, 201116heat advisories
  11. August 2, 201116heat advisories
  12. August 7, 201115heat advisories
  13. June 30, 201114heat advisories
  14. July 9, 201114heat advisories
  15. July 10, 201114heat advisories

Nearby

Alerts in force nowThe tornado archiveThe radar archive20102012

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.