Mesoscale Discussions in the United States
53,342 mesoscale discussions since 1986. 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
- 53,342
- Busiest year
- 20032,613 mesoscale discussions
- Average year
- 2,223over 24 years on file
- Busiest day
- May 23, 201140 mesoscale discussions
Over time
By year
Mesoscale discussions are counted from 2003.
By month of the year
By state
Every state and territory, with the alerts that covered any part of it. Each state’s page lists every one of them.
- Texas9,780
- Oklahoma6,631
- Kansas6,586
- Missouri6,092
- Nebraska5,703
- Illinois4,691
- Arkansas4,460
- Iowa4,275
- South Dakota4,226
- Mississippi4,075
- Alabama3,731
- Minnesota3,562
- Louisiana3,522
- Georgia3,503
- Indiana3,488
- Kentucky3,369
- Tennessee3,277
- Virginia3,255
- Pennsylvania3,114
- Florida3,094
- North Carolina3,074
- Colorado2,951
- Ohio2,881
- Wisconsin2,773
- New York2,717
- North Dakota2,524
- West Virginia2,452
- South Carolina2,185
- Michigan2,179
- Maryland2,098
- Montana1,860
- Wyoming1,813
- New Mexico1,758
- New Jersey1,522
- Massachusetts1,165
- Vermont1,064
- Connecticut1,037
- New Hampshire1,033
- Delaware1,001
- Maine859
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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.