Weather alerts in Ohio, 2021
2,386 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.
Weather alerts by county
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 2,386
- Warnings
- 751
- Watches
- 88
- Advisories
- 492
- Busiest month
- August578 alerts
- Busiest day
- August 11, 2021110 alerts
Over time
By month
The alerts
2,386 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Jefferson County139
- Cuyahoga County130
- Trumbull County128
- Ashtabula County124
- Belmont County111
- Geauga County110
- Williams County109
- Hamilton County109
- Summit County108
- Adams County107
- Portage County107
- Butler County106
- Stark County106
- Lorain County105
- Gallia County105
- Mahoning County103
- Defiance County101
- Lawrence County100
- Scioto County100
- Washington County100
- Harrison County100
- Paulding County99
- Columbiana County99
- Erie County97
- Lucas County96
- Medina County95
- Montgomery County94
- Warren County92
- Fulton County92
- Putnam County92
- Clermont County92
- Carroll County92
- Lake County90
- Greene County89
- Henry County89
- Darke County89
- Guernsey County89
- Brown County88
- Sandusky County88
- Wood County88
48 more counties
- Tuscarawas County88
- Van Wert County87
- Clinton County86
- Athens County86
- Miami County84
- Delaware County84
- Highland County84
- Preble County84
- Monroe County84
- Meigs County84
- Franklin County83
- Coshocton County83
- Noble County82
- Ashland County82
- Ottawa County81
- Pike County80
- Muskingum County80
- Seneca County80
- Madison County79
- Ross County79
- Huron County79
- Clark County78
- Licking County77
- Union County76
- Mercer County73
- Richland County73
- Shelby County72
- Knox County71
- Fayette County71
- Champaign County71
- Morgan County71
- Crawford County71
- Hancock County70
- Jackson County69
- Vinton County68
- Holmes County68
- Wayne County68
- Wyandot County68
- Pickaway County67
- Auglaize County67
- Logan County67
- Fairfield County66
- Allen County66
- Perry County64
- Marion County63
- Hocking County61
- Hardin County60
- Morrow County60
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.