All 88 Ohio counties
Counties with an active National Weather Service alert are marked. Open a county for its active alerts and recent history.
- Adams
- Allen
- Ashland
- Ashtabula
- Athens
- Auglaize
- Belmont
- Brown
- Butler
- Carroll
- Champaign
- Clark
- Clermont
- Clinton
- Columbiana
- Coshocton
- Crawford
- Cuyahoga
- Darke
- Defiance
- Delaware
- Erie
- Fairfield
- Fayette
- Franklin
- Fulton
- Gallia
- Geauga
- Greene
- Guernsey
- Hamilton
- Hancock
- Hardin
- Harrison
- Henry
- Highland
- Hocking
- Holmes
- Huron
- Jackson
- Jefferson
- Knox
- Lake
- Lawrence
- Licking
- Logan
- Lorain
- Lucas
- Madison
- Mahoning
- Marion
- Medina
- Meigs
- Mercer
- Miami
- Monroe
- Montgomery
- Morgan
- Morrow
- Muskingum
- Noble
- Ottawa
- Paulding
- Perry
- Pickaway
- Pike
- Portage
- Preble
- Putnam
- Richland
- Ross
- Sandusky
- Scioto
- Seneca
- Shelby
- Stark
- Summit
- Trumbull
- Tuscarawas
- Union
- Van Wert
- Vinton
- Warren
- Washington
- Wayne
- Williams
- Wood
- Wyandot