Flash Flood Warnings in Ohio
4,104 flash flood 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- Flash Flood Warnings
- 4,104
- Busiest year
- 1998335 flash flood warnings
- Average year
- 103over 40 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.
- Washington County183
- Hamilton County160
- Athens County156
- Belmont County155
- Gallia County152
- Meigs County137
- Lawrence County136
- Cuyahoga County136
- Coshocton County130
- Scioto County128
- Adams County128
- Noble County127
- Tuscarawas County126
- Monroe County125
- Vinton County125
- Clermont County121
- Muskingum County121
- Butler County116
- Guernsey County115
- Perry County115
- Morgan County114
- Jackson County113
- Lorain County113
- Brown County112
- Columbiana County107
- Jefferson County104
- Warren County102
- Franklin County99
- Summit County99
- Ashtabula County94
- Carroll County93
- Harrison County91
- Richland County88
- Geauga County87
- Stark County87
- Ashland County86
- Medina County85
- Ross County79
- Montgomery County77
- Preble County77
48 more counties
- Licking County76
- Holmes County74
- Fairfield County73
- Lake County73
- Portage County73
- Trumbull County73
- Darke County72
- Erie County70
- Morrow County69
- Mercer County69
- Lucas County67
- Marion County67
- Pickaway County67
- Wayne County67
- Highland County66
- Huron County66
- Pike County65
- Knox County64
- Shelby County62
- Auglaize County61
- Hocking County61
- Delaware County60
- Clinton County60
- Fayette County58
- Greene County57
- Madison County57
- Seneca County57
- Miami County56
- Crawford County55
- Logan County55
- Mahoning County55
- Union County53
- Ottawa County52
- Sandusky County51
- Clark County48
- Wyandot County47
- Hancock County46
- Van Wert County44
- Wood County44
- Champaign County38
- Henry County38
- Fulton County37
- Hardin County36
- Putnam County35
- Defiance County32
- Allen County32
- Paulding County26
- Williams County19
The latest flash flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 2:35 AM EDT | Flash Flood Warning | RLX | Washington | 106 min |
| Sep 21, 1:54 AM EDT | Flash Flood Warning | PBZ | Muskingum | 3 hr |
| Sep 21, 12:13 AM EDT | Flash Flood Warning | RLX | Athens, Morgan, Perry, Washington | 4 hr |
| Sep 21, 12:06 AM EDT | Flash Flood Warning | RLX | Morgan, Perry | 4 hr |
| Sep 20, 11:33 PM EDT | Flash Flood Warning | RLX | Meigs | 6 hr |
| Sep 20, 11:25 PM EDT | Flash Flood Warning | RLX | Gallia, Jackson, Vinton | 4 hr |
| Sep 20, 11:22 PM EDT | Flash Flood Warning | RLX | Gallia, Meigs | 5 hr |
| Sep 20, 10:45 PM EDT | Flash Flood Warning | RLX | Athens, Gallia, Meigs, Washington | 6 hr |
| Sep 20, 10:43 PM EDT | Flash Flood Warning | RLX | Athens, Vinton | 6 hr |
| Sep 20, 10:38 PM EDT | Flash Flood Warning | RLX | Athens, Meigs, Vinton | 6 hr |
| Sep 20, 10:37 PM EDT | Flash Flood Warning | ILN | Fairfield, Hocking, Pickaway | 6 hr |
| Sep 20, 10:35 PM EDT | Flash Flood Warning | RLX | Jackson, Meigs, Vinton | 6 hr |
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.