Alert archive / Mesoscale Discussions

Mesoscale Discussions in the United States, 2025

2,284 mesoscale discussions in 2025. 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
2,284
Busiest month
June470 mesoscale discussions
Busiest day
March 15, 202539 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. March 15, 202539mesoscale discussions
  2. May 16, 202528mesoscale discussions
  3. June 6, 202526mesoscale discussions
  4. June 8, 202526mesoscale discussions
  5. March 30, 202524mesoscale discussions
  6. May 19, 202524mesoscale discussions
  7. May 20, 202524mesoscale discussions
  8. June 7, 202524mesoscale discussions
  9. March 16, 202523mesoscale discussions
  10. March 31, 202523mesoscale discussions
  11. April 2, 202523mesoscale discussions
  12. June 9, 202522mesoscale discussions
  13. April 3, 202521mesoscale discussions
  14. May 2, 202521mesoscale discussions
  15. April 29, 202520mesoscale discussions

Nearby

Alerts in force nowThe tornado archiveThe radar archive20242026

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.