Alert archive / Ohio / Heat Advisories / 2026
Heat Advisories in Ohio, August 2026
3 heat advisories in August 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 August 2026. Tap one for its archive.
- Heat Advisories
- 3
- Busiest day
- August 31, 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 |
|---|---|---|---|---|
| Aug 31, 1:00 PM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 4 days |
| Aug 31, 1:24 PM EDT | Heat Advisory | CLE | Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more | 55 hr |
| Aug 31, 2:03 PM EDT | Heat Advisory | ILN | Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more | 4 days |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allen County1
- Defiance County1
- Fulton County1
- Henry County1
- Paulding County1
- Putnam County1
- Van Wert County1
- Williams County1
- Ashland County1
- Ashtabula County1
- Crawford County1
- Cuyahoga County1
- Erie County1
- Geauga County1
- Hancock County1
- Holmes County1
- Huron County1
- Knox County1
- Lake County1
- Lorain County1
- Lucas County1
- Mahoning County1
- Marion County1
- Medina County1
- Morrow County1
- Ottawa County1
- Portage County1
- Richland County1
- Sandusky County1
- Seneca County1
- Stark County1
- Summit County1
- Trumbull County1
- Wayne County1
- Wood County1
- Wyandot County1
- Adams County1
- Auglaize County1
- Brown County1
- Butler County1
28 more counties
- Champaign County1
- Clark County1
- Clermont County1
- Clinton County1
- Darke County1
- Delaware County1
- Fairfield County1
- Fayette County1
- Franklin County1
- Greene County1
- Hamilton County1
- Hardin County1
- Highland County1
- Hocking County1
- Licking County1
- Logan County1
- Madison County1
- Mercer County1
- Miami County1
- Montgomery County1
- Pickaway County1
- Pike County1
- Preble County1
- Ross County1
- Scioto County1
- Shelby County1
- Union County1
- Warren 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.