Alert archive / Ohio / Heat Advisories / 2026
Heat Advisories in Ohio, June 2026
10 heat advisories in June 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 heat advisories reaches back to 2005.
Heat Advisories by county
Each county as a circle sized by its count in June 2026. Tap one for its archive.
- Heat Advisories
- 10
- Busiest day
- June 11, 20263 heat advisories
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 |
|---|---|---|---|---|
| Jun 9, 1:53 PM EDT | Heat Advisory | CLE | Ashland, Crawford, Cuyahoga, Erie, Hancock, Huron and 12 more | 30 hr |
| Jun 9, 2:08 PM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 30 hr |
| Jun 10, 2:31 AM EDT | Heat Advisory | ILN | Auglaize, Hardin, Mercer | 17 hr |
| Jun 11, 1:48 AM EDT | Heat Advisory | ILN | Auglaize, Hardin, Mercer | 16 hr |
| Jun 11, 1:49 AM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 16 hr |
| Jun 11, 2:27 AM EDT | Heat Advisory | CLE | Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more | 13 hr |
| Jun 28, 1:01 PM EDT | Heat Advisory | CLE | Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more | 5 days |
| Jun 28, 1:48 PM EDT | Heat Advisory | ILN | Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more | 35 hr |
| Jun 29, 12:34 PM EDT | Heat Advisory | RLX | Athens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more | 5 days |
| Jun 29, 12:53 PM EDT | Heat Advisory | PBZ | Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 5 more | 5 days |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Ashland County3
- Crawford County3
- Cuyahoga County3
- Erie County3
- Hancock County3
- Huron County3
- Knox County3
- Lorain County3
- Lucas County3
- Marion County3
- Medina County3
- Morrow County3
- Ottawa County3
- Richland County3
- Sandusky County3
- Seneca County3
- Wood County3
- Wyandot County3
- Auglaize County3
- Hardin County3
- Mercer County3
- Allen County2
- Defiance County2
- Fulton County2
- Henry County2
- Paulding County2
- Putnam County2
- Van Wert County2
- Williams County2
- Ashtabula County2
- Geauga County2
- Holmes County2
- Lake County2
- Mahoning County2
- Portage County2
- Stark County2
- Summit County2
- Trumbull County2
- Wayne County2
- Adams County1
48 more counties
- Brown County1
- Butler County1
- Champaign County1
- Clark County1
- Clermont County1
- Clinton County1
- Darke County1
- Delaware County1
- Fairfield County1
- Fayette County1
- Franklin County1
- Greene County1
- Hamilton County1
- Highland County1
- Hocking County1
- Licking County1
- Logan County1
- Madison County1
- Miami County1
- Montgomery County1
- Pickaway County1
- Pike County1
- Preble County1
- Ross County1
- Scioto County1
- Shelby County1
- Union County1
- Warren County1
- Athens County1
- Gallia County1
- Jackson County1
- Lawrence County1
- Meigs County1
- Morgan County1
- Perry County1
- Vinton County1
- Washington County1
- Belmont County1
- Carroll County1
- Columbiana County1
- Coshocton County1
- Guernsey County1
- Harrison County1
- Jefferson County1
- Monroe County1
- Muskingum County1
- Noble County1
- Tuscarawas 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.