Alert archive / Flash Flood Watches

Flash Flood Watches in the United States, 2020

559 flash flood watches in 2020. 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
559
Busiest month
August102 flash flood watches
Busiest day
August 28, 202013 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.

14 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. August 28, 202013flash flood watches
  2. August 2, 202012flash flood watches
  3. February 11, 202010flash flood watches
  4. May 14, 202010flash flood watches
  5. July 24, 202010flash flood watches
  6. May 17, 20209flash flood watches
  7. June 7, 20209flash flood watches
  8. August 14, 20209flash flood watches
  9. November 11, 20208flash flood watches
  10. March 3, 20208flash flood watches
  11. April 12, 20208flash flood watches
  12. May 27, 20208flash flood watches
  13. June 5, 20208flash flood watches
  14. July 30, 20208flash flood watches
  15. May 24, 20207flash flood watches

Nearby

Alerts in force nowThe tornado archiveThe radar archive20192021

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.