Alert archive / Flash Flood Watches

Flash Flood Watches in the United States, 2009

632 flash flood watches in 2009. Each alert counts once, however many counties it covered. The archive of flash flood watches reaches back to 2005.

Flash Flood Watches by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Flash Flood Watches
632
Busiest month
June113 flash flood watches
Busiest day
July 29, 200915 flash flood 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.

13 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. July 29, 200915flash flood watches
  2. April 29, 200913flash flood watches
  3. June 19, 200913flash flood watches
  4. October 28, 200911flash flood watches
  5. July 26, 200911flash flood watches
  6. June 15, 200910flash flood watches
  7. October 13, 20099flash flood watches
  8. July 30, 20099flash flood watches
  9. October 7, 20098flash flood watches
  10. October 12, 20098flash flood watches
  11. January 5, 20098flash flood watches
  12. March 9, 20098flash flood watches
  13. May 1, 20098flash flood watches
  14. May 5, 20098flash flood watches
  15. May 14, 20098flash flood watches

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.