Heavy Rain in Ohio
Every heavy rain event the National Weather Service has filed in Ohio, year by year, with the most significant episodes. Rainfall totals unusual for the place and season that did not produce a flood.
The most significant on the map
The most significant heavy rain episodes in Ohio.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 291
- Deaths
- 2
- Injuries
- 0
- Damage
- $1.6 million
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Flash Flooding and Damaging Winds in Ohio, July 10, 2013Numerous thunderstorms developed and organized ahead of a cold front during the afternoon. The main severe threats from these storms were damaging winds and large hail.
- Hail and Damaging Winds in Ohio, September 3 to 4, 2011Scattered thunderstorms developed during the afternoon on September 3rd and continued to develop into the early morning hours on September 4th. Some of these thunderstorms became severe. The main threats from these storms were damaging thunderstorm winds and large hail.
- Flooding and Heavy Rain in Ohio, March 19 to 21, 2008Rain spread into southeast Ohio near dawn on Tuesday, the 18th. A strong east to west warm front had set up across northern Kentucky. By late afternoon, rain amounts of 0.5 to 1.35 had already fallen, with the heaviest being over northern Jackson, Vinton, and Athens Counties.
- Flash Flooding and Flooding in Ohio, May 21 to 22, 2014Thunderstorms developed in an unstable air mass ahead of a cold front. These thunderstorms were capable of producing large hail, damaging winds, heavy rainfall, flooding, and flash flooding. Some of the flooding lingered into the morning of May 22.
- Heavy Rain in Ohio, January 1, 2016Heavy rain resulted in high river levels on New Year's Day.
- Flash Flooding and Hail in Ohio, July 8, 2008A cold front moved across the area causing showers and thunderstorms to develop. A few of the thunderstorms became severe, while an area of training storms produced flash flooding in northeastern Ohio.
- Heavy Rain in Ohio, May 1 to 31, 1997Due to excess rainfall and lower than normal temperatures, approximately 75 percent of field planting was not done on time. Some farmers got an early start, but crops already in the ground were underwater and rotting.
- Tornado and Flooding in Ohio, April 7 to 9, 2020A strong low pressure system crossing through the state inflicted multiple rounds of severe weather across southeast Ohio. Starting on the 7th, a warm front draped across the Ohio Valley was the primary focus for convection to develop that evening.
- Flash Flooding and Flooding in Ohio, June 26 to 27, 2015Severe thunderstorms developed as a low pressure center tracked east along a stationary front which was draped across the region.
- Flash Flooding and Flooding in Ohio, June 20, 2014Slow moving thunderstorms developed in a very unstable airmass during the peak heating of the day. These storms were capable of producing damaging winds, heavy rainfall, flooding, and flash flooding.
- Hail and Damaging Winds in Ohio, May 11, 2014Thunderstorms developed across the region as a disturbance moved across the area. Some of these storms became severe with damaging winds and large hail being the primary threats. Heavy rainfall also occurred in a few locations with localized flooding.
- Heavy Rain in Ohio, March 2, 1997Rocky Fork Lake came out of it's banks causing damage to the local state park and flooding 3 homes.
- Flash Flood and Flooding in Ohio, June 16 to 18, 2015Thunderstorms developed along a stalled frontal boundary. The storms trained across portions of the region and produced very heavy rain and flooding.
- Hail and Damaging Winds in Ohio, June 2, 2009Thunderstorms fired across southeast Ohio during the heat and instability of the afternoon. The area was well south of an east to west front. The storms became multicellular and formed short lines. Numerous outflow boundaries were produced.
- Hail and Damaging Winds in Ohio, August 3, 2015Thunderstorms developed ahead of an advancing cold front over eastern Indiana. Additional storms developed on outflows of the mature storms.
- Tornadoes and Flash Flooding in Ohio, May 1 to 2, 2012A warm front lifting across the Ohio Valley during the morning brought into the area a very unstable airmass. Numerous thunderstorms developed during the afternoon and evening. The environment was favorable for large hail and damaging winds.
- Flash Flooding and Flood in Ohio, May 4, 2012Thunderstorms developed during the afternoon in an environment with moderate instability, weak flow, and an abnormally high amount of atmospheric moisture. These storms tended to build continuously over the same locations.
- Flash Flooding and Flooding in Ohio, July 9 to 10, 2013Widespread showers and thunderstorms developed well in advance of a cold front and upper level trough moving toward the Upper Ohio Valley. Scattered severe storms, flash flooding, and flooding occurred across eastern Ohio, western Pennsylvania, and northern West Virginia.
- Tornado and Flash Flood in Ohio, April 4, 2011Severe thunderstorms moved through during the afternoon hours of April 4th. Damaging wind was the main threat with these storms.
- Flash Flood and Flood in Ohio, July 13 to 14, 2017In a high moisture atmosphere, heavy rain fell across parts of southeastern Ohio on the morning of the 13th as a convective complex crossed. Three to four inches of rain fell, resulting in flash flooding in Perry County.
- Flooding and Damaging Wind in Ohio, June 24, 2014Thunderstorms developed across the region in a very moist airmass ahead of a cold front. These storms were capable of producing damaging winds, heavy rainfall, and localized flooding.
- Flash Flooding and Flooding in Ohio, July 6, 2013A large, slow moving area of rain with embedded heavier showers moved across the area from the late morning into the afternoon. The result was heavy rainfall with localized flooding and flash flooding.
- Flash Flood and Hail in Ohio, June 10, 2011Non-severe early morning convection over the Ohio River produced a deep outflow boundary across northern Kentucky, southeast Indiana, and southern Ohio. This boundary triggered the development of severe thunderstorms during the late morning through the afternoon in that area.
- Flash Flooding and Damaging Winds in Ohio, July 24, 2011Outflow pushing east from Indiana combined with pop up thunderstorms over Ohio to produce severe thunderstorms during the afternoon. Some of these storms produced very heavy rainfall and flash flooding.
- Flash Flooding and Flooding in Ohio, July 20, 2013A slow moving cold front helped to enhance thunderstorm activity south of the cold front. Some of these storms became severe with damaging winds being the primary threat.
More
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.