| March 2012 | Tornado (EF2) | West Union | 1 killed, 2 hurt, $2,000,000 | The tornado touched down just east of Highway 41, about 2 miles northeast of West Union. The tornado then traveled east northeast for just over 11 miles, destroying at least 5 mobile homes. Two homes were also damaged. One of these homes was built of brick. A 99 year old woman was in her mobile home in Tiffin Township when the tornado struck. She was injured from this tornado and passed away several days later. Two others were also injured from this tornado. A dozen cattle were killed and major power transmission poles were knocked over. Numerous trees were snapped or uprooted. Based on the damage surveyed, the maximum estimated wind speed of this tornado was 125 miles per hour. |
| May 2014 | Hail | West Union | $200,000 | Damage occurred to houses and vehicles due to the hail. |
| November 2002 | Tornado (F1) | West Union | $100,000 | A tornado touched down and tracked east along State Route 125. The greatest damaged occurred at a farm where four barns were damaged, one of which was completely destroyed. Two nearby homes and a church sustained minor structural damage. At least three dozen trees were also downed along the path of the tornado. |
| August 1997 | Tornado (F0) | West Union | $100,000 | This thunderstorm had a long line of downbursts which caused damage to numerous trees, some of which fell on a house and a mobile home. Embedded within this path of damage was evidence that a tornado made brief touchdowns. In two different areas, tree damage showed twisting motion indicating that a tornado existed. Also, one home was knocked off its foundation in one of the areas where the tornado touched down. Winds from some of the downburst activity were near 100 mph. |
| May 2014 | Thunderstorm Wind | West Union | $50,000 | Several trees were downed near State Route 125 and Ralston Road due to thunderstorm winds. Numerous trees and power lines were also downed between West Union and Blue Creek. |
| May 1996 | Thunderstorm Wind | West Union | $50,000 | no account filed |
| April 1999 | Thunderstorm Wind | West Union | $30,000 | Damage was noted to several trees as well as a mobile home. |
| August 1999 | Thunderstorm Wind | West Union | $15,000 | Trees and power lines downed. One tree fell on a house causing damage. |
| July 2023 | Thunderstorm Wind | West Union | $10,000 | Several trees and power lines were downed in the West Union area. |
| July 2022 | Thunderstorm Wind | West Union | $10,000 | A pole was snapped in half and wires were downed onto a roadway. |
| May 2014 | Hail | West Union | $10,000 | Siding was damaged and windows were broken on Vaughn Ridge Road due to the hail. |
| July 2012 | Thunderstorm Wind | West Union | $10,000 | Numerous trees were downed from Manchester to West Union due to thunderstorm winds. |
| June 2008 | Thunderstorm Wind | West Union | $10,000 | Several trees were knocked down. One structure sustained roof damage. |
| May 2001 | Flash Flood | West Union | $10,000 | Many roads were flooded and some were closed due to heavy rainfall. |
| August 2000 | Flash Flood | West Union | $10,000 | Heavy rainfall caused a road to be washed out. |
| August 2021 | Thunderstorm Wind | West Union | $8,000 | A few power poles were blown down. |
| April 2025 | Thunderstorm Wind | West Union | $6,000 | Several power poles were downed. |
| May 1995 | Thunderstorm Wind | West Union | $6,000 | Trees were downed, one on an automobile. Warren County Springboro,14,0033EST,,,0,0,0,0,Hail (0.75) |
| May 2024 | Thunderstorm Wind | West Union | $5,000 | Several trees were downed in the West Union area. |
| June 2022 | Thunderstorm Wind | West Union | $5,000 | Several trees were downed. |
| July 2016 | Flash Flood | West Union | $5,000 | Several roads were covered with rushing water across central Adams County. One house had a few feet of water in the basement. |
| June 2010 | Thunderstorm Wind | West Union | $5,000 | A tree fell onto a house. There were also reports of other trees down around the area. |
| January 2008 | Flash Flood | West Union | $5,000 | The Eddies Apartment complex in West Union was evacuated due to rising water. One vehicle was stranded in the high water. |
| June 2008 | Flash Flood | West Union | $5,000 | Several roads were flooded and closed with one to two feet of water rushing over them, including State Route 41 between State Route 136 and Panhandle Road. Numerous streams were out of their banks and overflowing roadways. |
| June 2002 | Thunderstorm Wind | West Union | $5,000 | Several trees were downed across the southern part of the county. |
| February 2000 | Flash Flood | West Union | $5,000 | Heavy rainfall caused State Route 41 southwest of West Union to flood. |
| August 2020 | Thunderstorm Wind | West Union | $4,000 | Numerous trees were reported knocked down. |
| January 2008 | Thunderstorm Wind | West Union | $4,000 | Numerous trees were knocked down, including along old State Route 32 and Mineral Springs Road. |
| June 2020 | Thunderstorm Wind | West Union | $3,000 | Several trees were knocked down and were blocking the intersection of OH-125 between Raiston Rd and Frank Young Rd. |
| July 2018 | Thunderstorm Wind | West Union | $3,000 | A roof to a house was damaged and a billboard along State Route 41 was also damaged. |
| May 2018 | Thunderstorm Wind | West Union | $3,000 | Several trees were downed. |
| May 2010 | Flash Flood | West Union | $3,000 | Flooded roadways were reported throughout the county. |
| July 2007 | Thunderstorm Wind | West Union | $3,000 | Trees were knocked down along Bethany Ridge Road. |
| August 2007 | Thunderstorm Wind | West Union | $3,000 | A few trees were downed. |
| August 2003 | Thunderstorm Wind | West Union | $3,000 | Several trees were downed along State Route 136. |
| October 2001 | Thunderstorm Wind | West Union | $3,000 | Four trees were knocked down in the southern part of the county. |
| June 1998 | Thunderstorm Wind | West Union | $3,000 | Trees and power lines downed. |
| August 1996 | Thunderstorm Wind | West Union | $3,000 | no account filed |
| May 2011 | Flood | West Union | $2,000 | Multiple roads were closed due to water on roads. |
| May 2010 | Thunderstorm Wind | West Union | $2,000 | Numerous trees were reported down due to damaging thunderstorm winds. |
| June 2009 | Thunderstorm Wind | West Union | $2,000 | Several trees were blown down. |
| August 2007 | Hail | West Union | $2,000 | no account filed |
| September 2024 | Thunderstorm Wind | West Union | $1,000 | A tree was downed along Chapparal Road. |
| June 2019 | Thunderstorm Wind | West Union | $1,000 | A tree was knocked down along Old Cincinnati Pike near Wednell Shrivener Road. |
| October 2010 | Thunderstorm Wind | West Union | $1,000 | Large tree limbs were reported down due to damaging thunderstorm winds. |
| May 2022 | Flood | West Union | - | High water was reported on State Route 41, south of West Union. |
| May 2022 | Flood | West Union | - | Water was covering half of an apartment complex parking lot. |
| April 2021 | Flood | West Union | - | Water was flowing across Paige School Road. |
| April 2021 | Flood | West Union | - | Water was reported across State Route 247 near Chapparal Road. |
| August 2021 | Flash Flood | West Union | - | High water was reported on several roadways. |
| February 2019 | Flood | West Union | - | Several roads were closed due to flooding. |
| May 2016 | Flood | West Union | - | One to one and a half feet of water was covering Ohio Route 247 north of West Union. |
| December 2015 | Heavy Rain | West Union | - | Multiple roads were closed across the county due to high water. |
| March 2006 | Flash Flood | West Union | - | Several roads were flooded and closed. |
| March 2006 | Flood | West Union | - | Heavy rain affected south central Ohio during the evening, with some locations receiving over one inch across Adams County. The heavy rain caused some high water over State Route 41 near Bentonville. |
| May 2003 | Flash Flood | West Union | - | Several roads were closed due to high water. Ohio Brush Creek was out of its banks in a couple of spots. |
| May 2003 | Flash Flood | West Union | - | State Route 41 was flooded and impassible. |
| June 1998 | Thunderstorm Wind | West Union | - | Winds gusted to 60 mph. |
| August 2024 | Hail | West Union | - | no account filed |
| July 2023 | Hail | West Union | - | no account filed |