Alert archive / Flash Flood Warnings

Flash Flood Warnings in the United States, 2023

3,693 flash flood warnings in 2023. Each alert counts once, however many counties it covered. The archive of flash flood warnings reaches back to 1986.

Flash Flood Warnings by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Flash Flood Warnings
3,693
Busiest month
July877 flash flood warnings
Busiest day
July 9, 202390 flash flood 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.

13 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 9, 202390flash flood warnings
  2. July 16, 202376flash flood warnings
  3. July 14, 202361flash flood warnings
  4. August 28, 202352flash flood warnings
  5. July 21, 202350flash flood warnings
  6. September 1, 202345flash flood warnings
  7. June 12, 202344flash flood warnings
  8. July 8, 202344flash flood warnings
  9. September 13, 202343flash flood warnings
  10. January 3, 202342flash flood warnings
  11. July 4, 202342flash flood warnings
  12. July 29, 202342flash flood warnings
  13. December 18, 202340flash flood warnings
  14. May 26, 202340flash flood warnings
  15. July 7, 202340flash flood warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive20222024

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.