Alert archive / Mesoscale Discussions

Mesoscale Discussions in the United States, 2026

2,322 mesoscale discussions in 2026. Each alert counts once, however many counties it covered. The last few weeks are still filling in as offices finish their follow-ups. 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
2,322
Busiest month
June481 mesoscale discussions
Busiest day
March 11, 202630 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 11, 202630mesoscale discussions
  2. August 11, 202630mesoscale discussions
  3. March 16, 202628mesoscale discussions
  4. April 27, 202627mesoscale discussions
  5. April 28, 202627mesoscale discussions
  6. June 10, 202626mesoscale discussions
  7. June 22, 202626mesoscale discussions
  8. July 3, 202626mesoscale discussions
  9. July 27, 202626mesoscale discussions
  10. April 15, 202625mesoscale discussions
  11. July 2, 202625mesoscale discussions
  12. June 11, 202624mesoscale discussions
  13. July 1, 202624mesoscale discussions
  14. July 4, 202624mesoscale discussions
  15. August 10, 202624mesoscale discussions

Nearby

Alerts in force nowThe tornado archiveThe radar archive2025

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.