Alert archive / Hazardous Seas Warnings

Hazardous Seas Warnings in the United States, 2018

79 hazardous seas warnings in 2018. Each alert counts once, however many counties it covered. The archive of hazardous seas warnings reaches back to 2005.

Hazardous Seas Warnings by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Hazardous Seas Warnings
79
Busiest month
January13 hazardous seas warnings
Busiest day
December 14, 20182 hazardous seas 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.

The busiest days

Days with the most alerts issued, by UTC date.

  1. December 14, 20182hazardous seas warnings
  2. January 16, 20182hazardous seas warnings
  3. January 22, 20182hazardous seas warnings
  4. April 22, 20182hazardous seas warnings
  5. May 12, 20182hazardous seas warnings
  6. July 12, 20182hazardous seas warnings
  7. July 20, 20182hazardous seas warnings
  8. October 11, 20181hazardous seas warnings
  9. October 25, 20181hazardous seas warnings
  10. October 27, 20181hazardous seas warnings
  11. November 6, 20181hazardous seas warnings
  12. November 9, 20181hazardous seas warnings
  13. November 19, 20181hazardous seas warnings
  14. November 21, 20181hazardous seas warnings
  15. November 26, 20181hazardous seas warnings

Nearby

Alerts in force nowThe tornado archiveThe radar archive20172019

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.