Alert archive / Mesoscale Discussions

Mesoscale Discussions in the United States, 2019

2,238 mesoscale discussions in 2019. 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
2,238
Busiest month
May427 mesoscale discussions
Busiest day
May 28, 201928 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 28, 201928mesoscale discussions
  2. May 29, 201928mesoscale discussions
  3. April 14, 201926mesoscale discussions
  4. June 20, 201925mesoscale discussions
  5. May 26, 201924mesoscale discussions
  6. June 1, 201923mesoscale discussions
  7. May 18, 201922mesoscale discussions
  8. May 25, 201922mesoscale discussions
  9. June 22, 201922mesoscale discussions
  10. August 18, 201922mesoscale discussions
  11. April 19, 201921mesoscale discussions
  12. May 23, 201921mesoscale discussions
  13. June 23, 201921mesoscale discussions
  14. July 20, 201921mesoscale discussions
  15. July 17, 201920mesoscale discussions

Nearby

Alerts in force nowThe tornado archiveThe radar archive20182020

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.