Alert archive / Ohio / Mesoscale Discussions / 2026
Mesoscale Discussions in Ohio, May 2026
14 mesoscale discussions in May 2026. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in May 2026. Tap one for its archive.
- Mesoscale Discussions
- 14
- Busiest day
- May 19, 20264 mesoscale discussions
Over time
By day
Days in UTC, the clock the archive keeps.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 4:42 PM EDT | Mesoscale Discussion | SPC | Allen, Defiance, Fulton, Hancock, Henry, Lucas and 8 more | 2 hr |
| May 9, 1:29 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Hancock, Henry, Lucas, Ottawa and 5 more | 2 hr |
| May 9, 4:36 PM EDT | Mesoscale Discussion | SPC | Ashtabula, Cuyahoga, Erie, Geauga, Henry, Huron and 11 more | 84 min |
| May 9, 6:39 PM EDT | Mesoscale Discussion | SPC | Ashtabula, Cuyahoga, Geauga, Lake, Portage, Summit and 1 more | 66 min |
| May 13, 12:41 PM EDT | Mesoscale Discussion | SPC | Belmont, Harrison, Jefferson, Meigs, Monroe, Noble and 1 more | 3 hr |
| May 18, 2:50 PM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Butler, Champaign, Clark, Darke and 23 more | 85 min |
| May 19, 1:44 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Henry, Lucas, Ottawa, Paulding and 5 more | 91 min |
| May 19, 4:26 PM EDT | Mesoscale Discussion | SPC | Darke, Mercer, Paulding, Van Wert | 64 min |
| May 19, 6:11 PM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Butler, Champaign, Clark, Darke and 21 more | 64 min |
| May 19, 7:39 PM EDT | Mesoscale Discussion | SPC | Adams, Ashland, Brown, Butler, Champaign, Clark and 33 more | 66 min |
| May 20, 7:50 AM EDT | Mesoscale Discussion | SPC | Adams, Ashland, Athens, Belmont, Brown, Carroll and 34 more | 115 min |
| May 20, 1:06 PM EDT | Mesoscale Discussion | SPC | Athens, Gallia, Jackson, Lawrence, Meigs, Scioto and 1 more | 114 min |
| May 27, 12:31 PM EDT | Mesoscale Discussion | SPC | Athens, Gallia, Lawrence, Meigs, Monroe, Noble and 1 more | 119 min |
| May 27, 6:54 PM EDT | Mesoscale Discussion | SPC | Gallia, Jackson, Lawrence, Meigs | 2 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Henry County6
- Paulding County6
- Sandusky County6
- Wood County6
- Defiance County5
- Fulton County5
- Lucas County5
- Putnam County5
- Van Wert County5
- Meigs County5
- Hancock County4
- Mercer County4
- Williams County4
- Ottawa County4
- Washington County4
- Gallia County4
- Lawrence County4
- Allen County3
- Wyandot County3
- Cuyahoga County3
- Geauga County3
- Portage County3
- Seneca County3
- Summit County3
- Trumbull County3
- Monroe County3
- Noble County3
- Butler County3
- Champaign County3
- Clark County3
- Darke County3
- Montgomery County3
- Athens County3
- Jackson County3
- Ashtabula County2
- Huron County2
- Lake County2
- Medina County2
- Belmont County2
- Harrison County2
46 more counties
- Jefferson County2
- Auglaize County2
- Greene County2
- Hardin County2
- Logan County2
- Marion County2
- Miami County2
- Preble County2
- Shelby County2
- Union County2
- Warren County2
- Hamilton County2
- Adams County2
- Ashland County2
- Brown County2
- Clermont County2
- Clinton County2
- Coshocton County2
- Delaware County2
- Fairfield County2
- Fayette County2
- Franklin County2
- Highland County2
- Holmes County2
- Knox County2
- Licking County2
- Madison County2
- Pickaway County2
- Pike County2
- Ross County2
- Stark County2
- Wayne County2
- Scioto County2
- Erie County1
- Lorain County1
- Crawford County1
- Morrow County1
- Richland County1
- Carroll County1
- Guernsey County1
- Hocking County1
- Morgan County1
- Muskingum County1
- Perry County1
- Tuscarawas County1
- Vinton County1
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. Warning verification from the Mesonet's Cow. Rebuilt daily.