Excessive Heat Warnings in Ohio
70 excessive heat warnings since 1986. 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 excessive heat warnings reaches back to 2005.
Excessive Heat Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Excessive Heat Warnings
- 70
- Busiest year
- 201220 excessive heat warnings
- Average year
- 5over 14 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Hamilton County34
- Montgomery County23
- Clermont County18
- Brown County16
- Butler County16
- Adams County15
- Warren County15
- Scioto County14
- Pike County13
- Clinton County12
- Hancock County12
- Highland County12
- Wood County12
- Lucas County11
- Preble County9
- Ross County9
- Wyandot County9
- Allen County9
- Defiance County9
- Henry County9
- Paulding County9
- Putnam County9
- Van Wert County9
- Crawford County8
- Fairfield County8
- Fayette County8
- Franklin County8
- Hocking County8
- Marion County8
- Pickaway County8
- Seneca County8
- Athens County8
- Fulton County8
- Gallia County8
- Jackson County8
- Lawrence County8
- Meigs County8
- Perry County8
- Vinton County8
- Williams County8
48 more counties
- Auglaize County7
- Darke County7
- Greene County7
- Huron County7
- Licking County7
- Mercer County7
- Miami County7
- Ottawa County7
- Sandusky County7
- Shelby County7
- Morgan County7
- Champaign County6
- Clark County6
- Delaware County6
- Erie County6
- Hardin County6
- Logan County6
- Lorain County6
- Madison County6
- Union County6
- Ashland County6
- Coshocton County6
- Guernsey County6
- Holmes County6
- Knox County6
- Monroe County6
- Morrow County6
- Muskingum County6
- Noble County6
- Richland County6
- Tuscarawas County6
- Washington County6
- Wayne County6
- Cuyahoga County5
- Geauga County5
- Belmont County5
- Harrison County5
- Stark County5
- Lake County4
- Carroll County4
- Columbiana County4
- Jefferson County4
- Medina County4
- Summit County4
- Mahoning County3
- Portage County3
- Trumbull County3
- Ashtabula County2
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. Rebuilt daily.