Alert archive / Mesoscale Discussions

Mesoscale Discussions in the United States, 2024

2,323 mesoscale discussions in 2024. 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
2,323
Busiest month
May516 mesoscale discussions
Busiest day
May 26, 202436 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. May 26, 202436mesoscale discussions
  2. May 28, 202432mesoscale discussions
  3. May 27, 202431mesoscale discussions
  4. April 2, 202430mesoscale discussions
  5. May 8, 202430mesoscale discussions
  6. May 7, 202424mesoscale discussions
  7. May 21, 202424mesoscale discussions
  8. May 24, 202424mesoscale discussions
  9. March 14, 202423mesoscale discussions
  10. July 30, 202423mesoscale discussions
  11. May 22, 202422mesoscale discussions
  12. June 26, 202422mesoscale discussions
  13. July 15, 202422mesoscale discussions
  14. July 31, 202422mesoscale discussions
  15. May 9, 202421mesoscale discussions

Nearby

Alerts in force nowThe tornado archiveThe radar archive20232025

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.