Alert archive / Ohio / Mesoscale Discussions / 2026

Mesoscale Discussions in Ohio, September 2026

24 mesoscale discussions in September 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 September 2026. Tap one for its archive.

Mesoscale Discussions
24
Busiest day
September 3, 20266 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.

IssuedProductOfficeCountiesLasted
Sep 2, 6:04 AM EDTMesoscale DiscussionSPCAshtabula, Geauga, Lake, Trumbull116 min
Sep 2, 8:51 AM EDTMesoscale DiscussionSPCAshtabula, Lake, Trumbull84 min
Sep 2, 3:58 PM EDTMesoscale DiscussionSPCColumbiana, Geauga, Mahoning, Portage, Stark, Summit and 1 more92 min
Sep 2, 4:46 PM EDTMesoscale DiscussionSPCDefiance, Fulton, Henry, Lucas, Ottawa, Sandusky and 2 more89 min
Sep 2, 8:48 PM EDTMesoscale DiscussionSPCAshtabula87 min
Sep 3, 2:07 AM EDTMesoscale DiscussionSPCTrumbull113 min
Sep 3, 1:44 PM EDTMesoscale DiscussionSPCAshtabula, Cuyahoga, Erie, Fulton, Geauga, Huron and 10 more3 hr
Sep 3, 4:02 PM EDTMesoscale DiscussionSPCAshland, Ashtabula, Cuyahoga, Erie, Fulton, Geauga and 12 more118 min
Sep 3, 4:16 PM EDTMesoscale DiscussionSPCCarroll, Columbiana, Harrison, Jefferson, Mahoning, Portage and 3 more119 min
Sep 3, 6:43 PM EDTMesoscale DiscussionSPCAshland, Carroll, Columbiana, Coshocton, Crawford, Geauga and 17 more92 min
Sep 4, 1:31 PM EDTMesoscale DiscussionSPCGallia, Meigs, Washington119 min
Sep 4, 3:35 PM EDTMesoscale DiscussionSPCAdams, Brown, Butler, Clermont, Clinton, Fayette and 9 more115 min
Sep 4, 10:01 PM EDTMesoscale DiscussionSPCDefiance, Fulton, Paulding, Williams3 hr
Sep 5, 1:41 AM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Butler, Champaign, Clark and 40 more94 min
Sep 5, 3:59 AM EDTMesoscale DiscussionSPCAllen, Auglaize, Champaign, Clark, Crawford, Defiance and 22 more91 min
Sep 5, 4:01 PM EDTMesoscale DiscussionSPCAdams, Athens, Brown, Butler, Clark, Clermont and 20 more119 min
Sep 9, 2:06 PM EDTMesoscale DiscussionSPCAshland, Carroll, Columbiana, Crawford, Geauga, Hardin and 13 more84 min
Sep 9, 4:42 PM EDTMesoscale DiscussionSPCAshland, Carroll, Columbiana, Coshocton, Crawford, Cuyahoga and 16 more93 min
Sep 9, 7:18 PM EDTMesoscale DiscussionSPCAuglaize, Champaign, Clark, Darke, Delaware, Fayette and 14 more117 min
Sep 12, 2:22 PM EDTMesoscale DiscussionSPCAthens, Belmont, Gallia, Jefferson, Lawrence, Meigs and 3 more113 min
Sep 13, 3:59 PM EDTMesoscale DiscussionSPCCarroll, Columbiana, Harrison, Holmes, Jefferson, Mahoning and 6 more2 hr
Sep 16, 3:46 PM EDTMesoscale DiscussionSPCAllen, Auglaize, Butler, Champaign, Clark, Clinton and 26 more119 min
Sep 20, 7:38 PM EDTMesoscale DiscussionSPCButler, Champaign, Clark, Clinton, Darke, Fayette and 7 more2 hr
Sep 20, 8:39 PM EDTMesoscale DiscussionSPCClinton, Fayette, Greene, Highland, Montgomery, Ross and 1 more96 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

46 more counties

Nearby

Alerts in force nowTornadoes on recordThe radar archive2025

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.