Alert archive / Mesoscale Discussions

Mesoscale Discussions in the United States, 2012

2,249 mesoscale discussions in 2012. 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
2,249
Busiest month
May363 mesoscale discussions
Busiest day
July 26, 201226 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. July 26, 201226mesoscale discussions
  2. May 29, 201225mesoscale discussions
  3. July 1, 201225mesoscale discussions
  4. March 2, 201223mesoscale discussions
  5. April 14, 201222mesoscale discussions
  6. September 18, 201222mesoscale discussions
  7. December 20, 201221mesoscale discussions
  8. February 29, 201221mesoscale discussions
  9. April 15, 201221mesoscale discussions
  10. May 5, 201221mesoscale discussions
  11. June 4, 201221mesoscale discussions
  12. September 8, 201221mesoscale discussions
  13. March 19, 201220mesoscale discussions
  14. May 3, 201220mesoscale discussions
  15. July 24, 201220mesoscale discussions

Nearby

Alerts in force nowThe tornado archiveThe radar archive20112013

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.