Alert archive / Ohio / Heat Advisories
Heat Advisories in Ohio, 2021
19 heat advisories in 2021. 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 2021. Tap one for its archive.
- Heat Advisories
- 19
- Busiest month
- August19 heat advisories
- Busiest day
- August 24, 20215 heat advisories
Over time
By month
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 9, 3:29 PM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 29 hr |
| Aug 10, 1:03 PM EDT | Heat Advisory | CLE | Erie, Hancock, Huron, Lucas, Ottawa, Sandusky and 3 more | 7 hr |
| Aug 10, 3:27 PM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 29 hr |
| Aug 11, 3:03 AM EDT | Heat Advisory | CLE | Erie, Hancock, Lucas, Ottawa, Sandusky, Seneca and 1 more | 12 hr |
| Aug 11, 1:47 PM EDT | Heat Advisory | RLX | Athens, Gallia, Jackson, Lawrence, Meigs, Morgan and 3 more | 30 hr |
| Aug 11, 2:55 PM EDT | Heat Advisory | ILN | Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more | 29 hr |
| Aug 12, 3:15 AM EDT | Heat Advisory | PBZ | Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 5 more | 16 hr |
| Aug 12, 3:17 AM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 17 hr |
| Aug 12, 4:14 AM EDT | Heat Advisory | CLE | Ashland, Crawford, Cuyahoga, Erie, Hancock, Holmes and 19 more | 15 hr |
| Aug 13, 2:48 AM EDT | Heat Advisory | RLX | Gallia, Lawrence | 14 hr |
| Aug 24, 3:30 AM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 18 hr |
| Aug 24, 3:38 AM EDT | Heat Advisory | CLE | Hancock, Lucas, Ottawa, Sandusky, Seneca, Wood | 17 hr |
| Aug 24, 10:41 AM EDT | Heat Advisory | ILN | Adams, Auglaize, Brown, Butler, Clermont, Darke and 9 more | 8 hr |
| Aug 24, 11:22 AM EDT | Heat Advisory | RLX | Gallia, Lawrence | 8 hr |
| Aug 24, 3:53 PM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 29 hr |
| Aug 25, 3:11 AM EDT | Heat Advisory | CLE | Hancock, Lucas, Wood | 15 hr |
| Aug 25, 11:19 AM EDT | Heat Advisory | RLX | Gallia, Lawrence | 7 hr |
| Aug 25, 9:28 PM EDT | Heat Advisory | IWX | Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more | 12 hr |
| Aug 26, 9:36 AM EDT | Heat Advisory | ILN | Butler, Clermont, Hamilton, Warren | 9 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Allen County6
- Defiance County6
- Fulton County6
- Henry County6
- Paulding County6
- Putnam County6
- Van Wert County6
- Williams County6
- Hancock County5
- Lucas County5
- Wood County5
- Ottawa County4
- Sandusky County4
- Seneca County4
- Gallia County4
- Lawrence County4
- Erie County3
- Butler County3
- Clermont County3
- Hamilton County3
- Warren County3
- Huron County2
- Wyandot County2
- Adams County2
- Auglaize County2
- Brown County2
- Darke County2
- Mercer County2
- Miami County2
- Montgomery County2
- Pike County2
- Preble County2
- Scioto County2
- Shelby County2
- Athens County1
- Jackson County1
- Meigs County1
- Morgan County1
- Perry County1
- Vinton County1
45 more counties
- Washington County1
- Champaign County1
- Clark County1
- Clinton County1
- Delaware County1
- Fairfield County1
- Fayette County1
- Franklin County1
- Greene County1
- Hardin County1
- Highland County1
- Hocking County1
- Licking County1
- Logan County1
- Madison County1
- Pickaway County1
- Ross County1
- Union County1
- Belmont County1
- Carroll County1
- Columbiana County1
- Coshocton County1
- Guernsey County1
- Harrison County1
- Jefferson County1
- Monroe County1
- Muskingum County1
- Noble County1
- Tuscarawas County1
- Ashland County1
- Crawford County1
- Cuyahoga County1
- Holmes County1
- Knox County1
- Lorain County1
- Mahoning County1
- Marion County1
- Medina County1
- Morrow County1
- Portage County1
- Richland County1
- Stark County1
- Summit County1
- Trumbull County1
- Wayne County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.