Weather alerts in Ohio, 2011
3,812 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 3,812
- Warnings
- 1,746
- Watches
- 235
- Advisories
- 592
- Busiest month
- May721 alerts
- Busiest day
- May 26, 2011125 alerts
Over time
By month
The alerts
3,812 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.
- Hamilton County251
- Pickaway County251
- Clermont County249
- Adams County237
- Warren County236
- Franklin County236
- Ross County233
- Brown County232
- Champaign County232
- Highland County229
- Scioto County227
- Greene County225
- Madison County225
- Miami County225
- Fayette County222
- Clark County221
- Logan County221
- Montgomery County221
- Shelby County219
- Pike County215
- Clinton County211
- Union County211
- Darke County210
- Tuscarawas County206
- Putnam County205
- Butler County203
- Hardin County203
- Wood County203
- Licking County202
- Delaware County201
- Fairfield County200
- Marion County199
- Defiance County199
- Belmont County198
- Ashland County198
- Columbiana County197
- Lawrence County195
- Hocking County194
- Auglaize County194
- Wayne County194
48 more counties
- Carroll County193
- Geauga County191
- Paulding County191
- Jefferson County190
- Richland County190
- Williams County190
- Coshocton County188
- Trumbull County187
- Guernsey County187
- Cuyahoga County186
- Lorain County185
- Fulton County185
- Harrison County184
- Hancock County183
- Holmes County183
- Huron County183
- Seneca County183
- Allen County183
- Gallia County182
- Preble County182
- Medina County181
- Sandusky County181
- Henry County181
- Crawford County178
- Van Wert County177
- Portage County176
- Lake County175
- Summit County175
- Muskingum County172
- Mercer County170
- Knox County170
- Lucas County168
- Ashtabula County167
- Athens County166
- Wyandot County165
- Jackson County164
- Erie County164
- Morrow County163
- Ottawa County163
- Meigs County161
- Perry County161
- Monroe County161
- Noble County161
- Stark County161
- Washington County159
- Vinton County159
- Morgan County153
- Mahoning County137
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.