Alert archive / Mesoscale Discussions

Mesoscale Discussions in the United States, 2023

2,348 mesoscale discussions in 2023. Each alert counts once, however many counties it covered. The archive of mesoscale discussions reaches back to 2003.

Mesoscale Discussions by state

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

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
Mesoscale Discussions
2,348
Busiest month
June450 mesoscale discussions
Busiest day
June 15, 202332 mesoscale discussions

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.

8 more states

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 15, 202332mesoscale discussions
  2. June 14, 202331mesoscale discussions
  3. March 31, 202330mesoscale discussions
  4. June 16, 202330mesoscale discussions
  5. May 7, 202329mesoscale discussions
  6. August 7, 202329mesoscale discussions
  7. April 5, 202328mesoscale discussions
  8. June 29, 202325mesoscale discussions
  9. July 13, 202325mesoscale discussions
  10. June 26, 202324mesoscale discussions
  11. July 14, 202324mesoscale discussions
  12. June 12, 202323mesoscale discussions
  13. July 26, 202323mesoscale discussions
  14. January 12, 202322mesoscale discussions
  15. July 29, 202322mesoscale discussions

Nearby

Alerts in force nowThe tornado archiveThe radar archive20222024

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.