Severe Thunderstorm Warnings in Ohio
20,014 severe thunderstorm 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 severe thunderstorm warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Severe Thunderstorm Warnings
- 20,014
- Busiest year
- 1998917 severe thunderstorm warnings
- Average year
- 488over 41 years on file
Over time
By year
Before October 2007 these were issued for whole counties, and a storm crossing three counties was often three warnings; since then one polygon follows the storm. The count changed with the practice, not only with 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.
- Columbiana County658
- Jefferson County643
- Tuscarawas County619
- Lorain County598
- Franklin County597
- Clermont County596
- Warren County582
- Guernsey County581
- Summit County576
- Montgomery County575
- Cuyahoga County574
- Carroll County566
- Brown County563
- Portage County562
- Hamilton County555
- Harrison County550
- Greene County547
- Trumbull County541
- Huron County538
- Belmont County531
- Clinton County531
- Muskingum County531
- Adams County528
- Highland County523
- Coshocton County521
- Ashland County517
- Medina County512
- Madison County509
- Miami County504
- Richland County498
- Butler County497
- Fairfield County496
- Clark County492
- Wayne County491
- Darke County489
- Stark County489
- Licking County484
- Seneca County484
- Pickaway County481
- Ross County477
48 more counties
- Ashtabula County472
- Geauga County471
- Fayette County461
- Gallia County456
- Champaign County455
- Wood County454
- Erie County453
- Preble County441
- Shelby County441
- Lawrence County441
- Scioto County439
- Athens County433
- Washington County432
- Sandusky County431
- Logan County416
- Delaware County408
- Union County405
- Meigs County405
- Crawford County403
- Mahoning County403
- Noble County390
- Ottawa County383
- Knox County382
- Monroe County374
- Morrow County366
- Holmes County362
- Auglaize County359
- Hancock County359
- Lucas County358
- Pike County354
- Wyandot County332
- Vinton County332
- Lake County331
- Hocking County331
- Mercer County326
- Defiance County325
- Morgan County325
- Henry County320
- Marion County318
- Perry County314
- Van Wert County310
- Putnam County309
- Paulding County308
- Jackson County306
- Hardin County274
- Williams County265
- Fulton County253
- Allen County238
The latest severe thunderstorm warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 11:54 PM EDT | Severe Thunderstorm Warning | RLX | Meigs | 36 min |
| Sep 20, 11:13 PM EDT | Severe Thunderstorm Warning | RLX | Athens, Gallia, Jackson, Meigs, Vinton | 32 min |
| Sep 20, 10:17 PM EDT | Severe Thunderstorm Warning | ILN | Fairfield, Hocking, Pickaway, Ross | 43 min |
| Sep 20, 8:37 PM EDT | Severe Thunderstorm Warning | ILN | Clinton, Fayette, Greene, Madison | 38 min |
| Sep 20, 8:19 PM EDT | Severe Thunderstorm Warning | ILN | Clinton, Warren | 41 min |
| Sep 20, 8:06 PM EDT | Severe Thunderstorm Warning | ILN | Clinton, Greene, Montgomery, Warren | 39 min |
| Sep 20, 7:08 PM EDT | Severe Thunderstorm Warning | ILN | Butler, Preble | 41 min |
| Sep 20, 4:49 PM EDT | Severe Thunderstorm Warning | ILN | Scioto | 26 min |
| Sep 20, 4:07 PM EDT | Severe Thunderstorm Warning | ILN | Adams, Scioto | 23 min |
| Sep 20, 2:08 AM EDT | Severe Thunderstorm Warning | ILN | Pike, Ross, Scioto | 37 min |
| Sep 20, 2:00 AM EDT | Severe Thunderstorm Warning | RLX | Athens, Gallia, Jackson, Meigs, Vinton | 60 min |
| Sep 20, 1:35 AM EDT | Severe Thunderstorm Warning | ILN | Adams, Highland, Pike, Scioto | 40 min |
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.