Alert archive / Flash Flood Warnings

Flash Flood Warnings in the United States, 1999

3,030 flash flood warnings in 1999. 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
3,030
Busiest month
June567 flash flood warnings
Busiest day
September 16, 1999185 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.

10 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. September 16, 1999185flash flood warnings
  2. January 22, 199976flash flood warnings
  3. January 23, 199970flash flood warnings
  4. January 29, 199963flash flood warnings
  5. May 4, 199949flash flood warnings
  6. June 12, 199946flash flood warnings
  7. June 25, 199945flash flood warnings
  8. September 17, 199945flash flood warnings
  9. June 10, 199942flash flood warnings
  10. January 24, 199941flash flood warnings
  11. June 28, 199940flash flood warnings
  12. May 17, 199939flash flood warnings
  13. May 12, 199937flash flood warnings
  14. October 17, 199934flash flood warnings
  15. April 26, 199934flash flood warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive19982000

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.