Alert archive

Tropical Storm Warnings in the United States

688 tropical storm warnings since 1986. Each alert counts once, however many counties it covered. The archive of tropical storm warnings reaches back to 2005.

Tropical Storm Warnings by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Tropical Storm Warnings
688
Busiest year
202075 tropical storm warnings
Average year
34over 20 years on file
Busiest day
September 25, 20248 tropical storm warnings

Over time

By year

Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.

By month of the year

By state

Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.

The busiest days

Days with the most alerts issued, by UTC date.

  1. September 25, 20248tropical storm warnings
  2. July 19, 20087tropical storm warnings
  3. November 9, 20097tropical storm warnings
  4. September 1, 20107tropical storm warnings
  5. September 3, 20187tropical storm warnings
  6. October 28, 20207tropical storm warnings
  7. August 3, 20207tropical storm warnings
  8. September 4, 20086tropical storm warnings
  9. July 22, 20106tropical storm warnings
  10. August 11, 20106tropical storm warnings
  11. September 28, 20106tropical storm warnings
  12. August 26, 20116tropical storm warnings
  13. June 16, 20156tropical storm warnings
  14. October 6, 20166tropical storm warnings
  15. September 1, 20166tropical storm warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive

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.