Alert archive / Mesoscale Discussions / 2025
Mesoscale Discussions in the United States, May 2025
429 mesoscale discussions in May 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.
- Mesoscale Discussions
- 429
- Busiest day
- May 16, 202528 mesoscale discussions
Over time
By day
Days in UTC, the clock the archive keeps.
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas460
- Oklahoma284
- Nebraska242
- Kansas227
- Missouri214
- South Dakota197
- Arkansas197
- Mississippi178
- Illinois166
- Tennessee164
- Iowa160
- Kentucky160
- Colorado158
- Alabama157
- Virginia153
- Minnesota149
- Georgia138
- Louisiana129
- Pennsylvania126
- North Carolina124
- Indiana115
- West Virginia110
- North Dakota103
- Florida98
- Wisconsin96
- Maryland94
- Wyoming94
- Ohio93
- New York90
- New Mexico86
- Montana81
- South Carolina73
- Michigan70
- New Jersey53
- Delaware41
- Vermont34
- New Hampshire33
- Massachusetts31
- Connecticut25
- Maine24
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.