Alert archive / Severe Thunderstorm Watches

Severe Thunderstorm Watches in the United States, 1999

468 severe thunderstorm watches in 1999. Each alert counts once, however many counties it covered. The archive of severe thunderstorm watches reaches back to 1997.

Severe Thunderstorm Watches by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Severe Thunderstorm Watches
468
Busiest month
July108 severe thunderstorm watches
Busiest day
May 17, 199915 severe thunderstorm 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.

6 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 17, 199915severe thunderstorm watches
  2. May 23, 19999severe thunderstorm watches
  3. June 4, 19999severe thunderstorm watches
  4. June 6, 19999severe thunderstorm watches
  5. June 11, 19999severe thunderstorm watches
  6. July 6, 19999severe thunderstorm watches
  7. April 26, 19998severe thunderstorm watches
  8. July 23, 19998severe thunderstorm watches
  9. July 29, 19998severe thunderstorm watches
  10. May 10, 19997severe thunderstorm watches
  11. July 4, 19997severe thunderstorm watches
  12. July 31, 19997severe thunderstorm watches
  13. February 11, 19996severe thunderstorm watches
  14. February 27, 19996severe thunderstorm watches
  15. May 16, 19996severe thunderstorm watches

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.