Alert archive / Red Flag Warnings

Red Flag Warnings in the United States, 2011

1,651 red flag warnings in 2011. Each alert counts once, however many counties it covered. The archive of red flag warnings reaches back to 2005.

Red Flag Warnings by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Red Flag Warnings
1,651
Busiest month
April306 red flag warnings
Busiest day
April 5, 201121 red flag 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.

6 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. April 5, 201121red flag warnings
  2. April 6, 201119red flag warnings
  3. March 11, 201118red flag warnings
  4. April 2, 201118red flag warnings
  5. April 8, 201118red flag warnings
  6. April 28, 201118red flag warnings
  7. March 23, 201117red flag warnings
  8. May 7, 201117red flag warnings
  9. May 8, 201117red flag warnings
  10. May 9, 201117red flag warnings
  11. April 16, 201116red flag warnings
  12. April 18, 201116red flag warnings
  13. April 12, 201115red flag warnings
  14. May 16, 201115red flag warnings
  15. June 15, 201115red flag warnings

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.