| July 2015 | Flash Flood | Eastwood | 3 killed, 3 hurt, $3,000,000 | Thunderstorms developed across Brown County around 2100EST. A rain gauge near Red Oak received 2.4 inches of rain between 2120EST and 2205EST. Flooding started in the Georgetown area around 2140EST, when 6 people were stranded in multiple vehicles along State Route 125 due to rapidly rising water on Straight Creek. Over the next hour, numerous water rescues occurred throughout much of Brown County. By 2220EST, 3.0 inches of rain had fallen at the Red Oak gauge. Between 2200EST and 2300EST, Red Oak Creek rapidly rose out of its banks and caused widespread damage to homes and roads along the creek from Red Oak to where the creek enters the Ohio River in Ripley. Over 30 homes were affected by flood waters along Red Oak Creek. Three homes along the creek were completely destroyed and another 5 homes suffered major damage. Two adults and 4 children were in one of the houses as it was swept into the creek. One adult and two of the children were killed and the others were injured. Flash flooding continued into the early morning hours of the 19th. |
| April 1968 | Tornado (F4) | not stated | 1 killed, 4 hurt, $2,500,000 | no account filed |
| March 1997 | Flash Flood | Countywide | 1 killed, $2,000,000 | no account filed |
| April 1968 | Tornado (F4) | not stated | 1 hurt, $2,500,000 | no account filed |
| July 1978 | Tornado (F0) | not stated | 1 hurt, $25,000 | no account filed |
| November 1992 | Tornado (F1) | not stated | $2,500,000 | no account filed |
| March 1986 | Tornado (F2) | not stated | $2,500,000 | no account filed |
| July 2001 | Flash Flood | Countywide | $586,000 | Damage was reported to State Route 131 and other county roads, with eight to ten bridges washed out. |
| July 2022 | Tornado (EF1) | Vera Cruz | $500,000 | The tornado touched down west of Woodward Road in Brown County, affecting areas of|Woodland Drive before crossing State Route 131. At this point the tornado was in its formative stages, with mainly EF-0 rated damage across State Route 131 and Black Oak Road. Within the Lake Lorelei community, the tornado strengthened and produced extensive tree damage in neighborhoods on the west side of Lake Lorelei. Many mature, tall trees were snapped or uprooted, some of which fell on homes and vehicles. Roof damage also occurred, as well as porches uplifted on a few homes. The tornado continued northeast across Lake Lorelei and began to weaken as it exited the Lake Lorelei community and crossed Vera Cruz Road. The tornado continued to produce|concentrated and significant tree damage on the east side of Vera Cruz Road north of Fayetteville-Blanchester Road, and likely lifted just west of Stark Road. |
| March 2012 | Tornado (EF1) | Maple | $500,000 | The tornado initially touched down in south central Campbell County at 1639 EST near Peach Grove Road and crossed Fisher Road northwest of Peach Grove. The tornado then crossed into Pendleton County at 1641 EST after producing high end EF3 damage along Reid Ridge Road near the Campbell and Pendleton County line. The tornado then moved across Mays Road producing significant and widespread EF2 to low end EF3 damage. The tornado then crossed AA highway and eventually the Ohio River, after crossing Kentucky Highway 8. Based on the damage surveyed, the maximum wind speed of the tornado was estimated to be 160 miles per hour in Campbell County and 140 miles per hour in Pendleton County. The tornado traveled a total of 2.68 miles in Campbell County, and 4 miles in Pendleton County. The tornado then moved into Clermont County Ohio at 1646 EST, where it hit the town of Moscow, causing EF3 damage. The tornado continued on the ground across Clermont County, crossing into Brown County at 1658 EST. The tornado then lifted south of Hamersville in western Brown County at 1702 EST. This tornado caused extensive damage to structures and trees along its entire path on both sides of the Ohio River. Numerous homes were very heavily damaged or destroyed. Many homes lost their roofs, having complete exterior wall failure. Some modular homes were completely removed from their foundations, lifted, and thrown in excess of 100 yards where they were destroyed. The damage in Ohio from this tornado was consistent with maximum winds estimated at 160 miles per hour in Clermont County, and 100 miles per hour in Brown County. The tornado traveled a total of 11.04 miles in Clermont County, and 2.69 miles in Brown County. |
| July 2017 | Flash Flood | Ripley | $250,000 | Four to five inches of rain produced widespread flash flooding across southeastern Brown County. Damage to several roads was reported throughout Huntington Township and a bridge at Stringtown and Flaugher Hill Roads sustained damage. One vehicle was washed down a creek and numerous vehicles were stranded in high water. |
| March 2023 | Thunderstorm Wind | Crosstown | $150,000 | The enhanced swath of wind damage is believed to have begun near the intersection of Upper Five Mile West Road and Greenbush West Road. Several structures sustained minor siding damage, with numerous trees and telephone poles snapped or uprooted in this vicinity. A large dumpster was blown 25 yards and a garage door was blown in at a residence on Greenbush West Road, along with numerous trees uprooted on the property.||A few very large trees fell onto a mobile home on Upper Five Mile West Road, creating considerable damage to the property. Damage in this area was consistent with winds of approximately 80 mph. |
| May 2004 | Tornado (F1) | Mt Orab | $100,000 | A tornado touched down along Five Mile Road, just northwest of Greenbush. Several mobile homes and a well built house sustained major damage. Numerous trees were uprooted and downed. |
| December 2000 | Flash Flood | Countywide | $100,000 | Several hours of heavy rainfall caused flooded roads across the county. A bridge was also washed out. |
| July 2000 | Thunderstorm Wind | Higginsport | $100,000 | Thunderstorm winds caused damage at the White Oak Creek Marina. Numerous trees were knocked down, several of which fell on campers and boats. |
| June 2011 | Tornado (EF1) | Grgetwn Brown Co Arp | $90,000 | The tornado touched down north of the intersection of US Highway 68 and State Route 125. The tornado moved east through several wooded areas where it snapped and uprooted numerous trees. The tornado then crossed State Route 125 near Township Highway 15 where it demolished four small barns. The tornado then lifted just before crossing County Highway 77. The maximum estimated wind speed based on damage was 90 miles per hour. |
| February 2008 | Thunderstorm Wind | Ripley | $80,000 | Three homes along US Routes 62 and 68 north of Ripley had their roofs either removed or damaged. Additional structural damage occurred to a motel, and apartment building and church near Aberdeen. A number of parked vehicles had windows damaged. Numerous trees were also uprooted or downed in the area. Damage was determined to be caused by straight-line winds estimated at 80-90 mph. |
| March 2023 | Thunderstorm Wind | St Martin | $75,000 | A swath of wind damage with estimated wind speeds of 90 mph affected the area just southwest of Saint Martin. Several large trees were uprooted and snapped along Savage Road and at Chatfield College. Roofing at a few buildings on the college grounds was damaged and a house on Savage Road was significantly damaged due to a fallen tree. |
| February 2018 | Tornado (EF1) | Hamersville | $65,000 | The tornado is first believed to have touched down near Lucas Road, about one mile northeast of Hamersville. More significant damage was observed near the intersection of White Oak Valley Road and Smokey Row Road, where a well-built home suffered partial roof loss and additional loss of roofing material. At another property on White Oak Valley Road, a trailer was flipped over. Tree damage was extensive along Smokey Row Road, especially near its intersection with Vinegar Hill Road.||On New Hope-McKinley Road, about a half mile east of U.S. 68, a mobile home had its roof completely removed. Debris from this roof was observed thrown about 500 yards downstream (northeast) of its origin. Additional tree damage was observed along New Hope-White Oak Station Road.||In addition to the tornadic damage described above, the National Weather Service storm survey observed non-tornadic damage across a much wider area. This area of damage extended about 13 miles in length, stretching from far southeastern Clermont County through north central Brown County. This straight-line wind damage affected areas near Feesburg and Hamersville, and was observed on both sides of the surveyed tornadic circulation. This damage consisted of additional tree and outbuilding damage, including the destruction of a few outbuildings. |
| February 2008 | Thunderstorm Wind | Fivemile | $60,000 | Several farm buildings sustained significant damage just east and northeast of the village of Fivemile. A few barns were blown over and grain silos were destroyed. A number of houses in the area sustained damage as well, with several trees uprooted. Damage was determined to be caused by straight-line winds estimated at 80 to 100 mph. |
| July 2023 | Flash Flood | Freeburg | $50,000 | A one lane bridge was washed out on Mt Zion Road along the west branch of Bullskin Creek. |
| April 2020 | Thunderstorm Wind | Vera Cruz | $50,000 | Numerous homes were damaged around Lake Lorelei. |
| May 2016 | Flash Flood | Neel | $50,000 | A bridge was washed away on West Fork Road near the intersection with Ohio Route 763. |
| April 2007 | Tornado (EF0) | Macon | $50,000 | A tornado touched down near Tri County Road and continued towards the intersection of Melblanc and Steele Roads in northeast Brown County. Five to ten trees were either uprooted or were snapped off towards the tops, with additional large limbs and branches knocked down from other trees. A trampoline was picked up and moved, and a large front porch on a home along Steele Road was torn off with the roof tossed several yards. Large pieces of siding and roof from at least one barn were carried a hundred yards. This tornado was rated EF-0 with top wind speeds around 80 mph. |
| June 2022 | Tornado (EF0) | Sardinia | $40,000 | Widespread minor tree damage was observed throughout Sardinia and in surrounding areas. Much of this is believed to have been caused by straight line winds of around 60 to 70 mph.||However, a more concentrated corridor of damage was also observed, and this damage was caused by a tornado. The first tornadic damage was observed near the intersection of Hope Lane and Purdy Road, where tree damage extended into a neighborhood south of Charles Street. The most significant tree damage was observed on Oakdale Avenue. A stand of softwood trees was heavily damaged with numerous trees snapped off. Further east, behind some houses, several large hardwood trees were uprooted. These trees were found to be laying in different directions.||Additional tree damage was also observed on a consistent path to the east that crossed State Route 32, Siteman Road, and Katterman Road. No additional damage was found east of Katterman Road. Based on the tree damage found on Oakdale Avenue, the strongest winds in this tornado were estimated to be 75 mph. |
| March 2017 | Thunderstorm Wind | Hamersville | $40,000 | There were multiple swaths of enhanced thunderstorm wind damage across central Brown County, with patterns that were consistent with non-tornadic winds. Tree damage was common among these swaths. In addition, occasional structural damage was noted. This included damage to several mobile homes, barns and outbuildings on Martin-Alexander Road, Weis Road and Oakland Road southeast of Mount Orab. Some structures in Hamersville and Higginsport also experience some minor structural damage, which included roofing material partially removed from several buildings and damage to a few outbuildings. The damage was consistent with winds of 70 to 80 mph. |
| June 2016 | Thunderstorm Wind | East Wahlsburg | $40,000 | A tobacco barn and several trees were knocked down at 9141 Day Hill Arnheim Road. The house also had siding damage. |
| August 2016 | Tornado (EF0) | Sardinia | $30,000 | A weak tornado touched down on the west side of Sardinia near Highway 24B (Maple Ave) and moved east-northeast through the village, ending on the northeast side of town near Highway 32 (Appalachian Highway).||The beginning of the tornado track was marked by scattered broken tree branches generally 3 to 6 inches in diameter. These branches tended to fall in a narrow corridor indicating convergence along the track. This was the primary damage observed near Maple Ave as it entered the western portion of Sardinia up to just south of the|intersection with Broad Street. A few slightly larger branches up to approximately 8 inches in diameter were broken as the tornado moved just south of Winchester Street. Wind speeds of approximately 60 to 70 mph likely caused much of this damage.||The tornado appeared to strengthen and widen as it continued to move near and just south of Sardinia-Mowrystown Road in Sardinia. Minor structural damage became more evident in this area and larger trees were broken. A gas station pump was dislodged from its base near the intersection with Winchester Street, and a section of roofing|approximately 45 feet by 10 feet was partially removed from a storage barn 100 yards to the east-northeast. Tree limbs, 4 to 7 inches in diameter, were broken across the street in the cemetery and fell south toward the center line of the track. Three large trees approximately 12-18 inches in diameter were uprooted and oriented toward the northeast on the south side of Sardinia-Mowrystown Road, near the intersection with Kelly Street. Wind speeds of 65 to 75 mph likely brought down these trees, though wet soils also contributed.||A brick chimney was also partially destroyed on a nearby house. An overall convergent debris pattern was evident in this area, especially with the tree damage.||The tornado then started to weaken just before dissipating east of Brookfield Place near Highway 32 (Appalachian Highway). A metal carport approximately 20 feet by 12 feet was lifted from the north side of Brookfield Place near the intersection with Meadow View, carried across Brookfield Place, and dropped on the south side of|the road. Leaf splatter was also observed on the west-facing side of a motor home near where the carport was dropped. An eyewitness at this location described a column of rotating debris associated with the tornado. Minor tree damage was noted at the east end of Brookfield Place, after which the tornado dissipated. Wind speeds in|this area were likely 60 to 70 mph. |
| May 2011 | Thunderstorm Wind | Georgetown | $30,000 | A roof was partially removed from a bowling alley and a house was also damaged due to thunderstorm winds. |
| February 2008 | Thunderstorm Wind | Mt Orab | $30,000 | Three barns were knocked down and a home was pushed off of its foundation. Several trees and power poles were downed as well. |
| June 2008 | Thunderstorm Wind | Fayetteville Jj Arpt | $30,000 | Several homes had roof shingles ripped off, with one home having its porch roof completely removed and deposited on the other side of the house. A garage door was blown inwards at an adjacent house. Numerous large trees were either split open or completely uprooted in the vicinity as well. Damage was determined to be caused by straight-line winds estimated at 70 mph. |
| May 2003 | Thunderstorm Wind | Countywide | $30,000 | Numerous trees were downed. A barn was destroyed along US 68. |
| February 2000 | Flash Flood | Countywide | $25,000 | Heavy rainfall caused creeks and streams across the county to come out of their banks. |
| April 1977 | Tornado (F0) | not stated | $25,000 | no account filed |
| March 1961 | Tornado | not stated | $25,000 | no account filed |
| July 2025 | Flash Flood | South Stringtown | $20,000 | Multiple sections of Rankin Hill Road were washed out, just east of North 2nd Street. |
| July 2023 | Thunderstorm Wind | Ripley | $20,000 | A tree fell onto a house and a car in Ripley. |
| April 2020 | Thunderstorm Wind | Aberdeen | $20,000 | Several reports of damage were reported throughout the Aberdeen area, including numerous trees uprooted and damage to roofs. |
| April 2020 | Thunderstorm Wind | Vera Cruz | $20,000 | Several large pine trees were uprotted and other trees were knocked down at a property on O'Reilly Road. Also, there was roof damage to a barn and some fencing was blown away. |
| May 2015 | Thunderstorm Wind | Mt Orab | $20,000 | Numerous large trees were downed and several homes were damaged due to thunderstorm winds in the Mt Orab area. |
| May 2015 | Thunderstorm Wind | Sardinia | $20,000 | Thunderstorm winds damaged a church roof. Numerous trees were also knocked down. Some structural damage occurred to a few buildings due to fallen trees. |
| March 2012 | Thunderstorm Wind | Macon | $20,000 | Numerous trees and powers poles were reported down and a camper trailer was flipped. Fences were blown down in the area and an old barn collapsed. Based on the survey, this damage was determined to be caused by straight-line non-tornadic winds estimated at 75 miles per hour. |
| September 2010 | Hail | Mt Orab | $20,000 | Windows were broken, roof shingles were torn, siding was damaged, and crops were destroyed due to large hail that moved through the area. |
| October 2010 | Thunderstorm Wind | Ripley | $20,000 | A porch roof was damaged due to damaging thunderstorm winds. Structural damage also occurred to the walls and main roof of the house due to the winds. |
| January 2008 | Thunderstorm Wind | Hamersville | $20,000 | A barn was blown down and sustained roof damage on White Oak Valley Road. The windows of the barn was also blown out. Trees and power poles were knocked down throughout western Brown County. |
| June 2005 | Thunderstorm Wind | Georgetown | $20,000 | A barn sustained structural damage along Smokey Row Road. A nearby workshed had its roof peeled off. Several trees were also downed across the area. |
| August 1999 | Thunderstorm Wind | Sardinia | $20,000 | Numerous large limbs and a tree were knocked down. The tree fell on a house causing damage. |
| May 1998 | Thunderstorm Wind | Georgetown | $20,000 | Trees were downed and roofs were blown off a house and barn. |
| July 1998 | Thunderstorm Wind | Countywide | $20,000 | Trees downed across the county. |
| April 2025 | Tornado (EF0) | Fayetteville | $15,000 | The tornado began near U.S. Route 68, just to the northeast of Fayetteville, where a barn was destroyed. Barn debris was thrown into a field just to the northeast. Numerous trees were knocked over, snapped or uprooted on the Chatfield College property and trees were also downed along Brown County Inn Road. The tornado then entered Highland County at 0020EST, just north of Brown County Inn Road. From here, the tornado continued across Highland County, into Clinton County and then back into Highland County, before ending near Lynchburg at 0024EST. |
| July 2025 | Flash Flood | Ripley | $15,000 | A residential structure on Scoffield Road, just west of Devore Road, sustained water damage with several inches of flowing water and mud moving through living spaces. |
| June 2022 | Thunderstorm Wind | Centerpoint | $15,000 | Several trees were uprooted and snapped along Ripley-Day Hill road, near U.S. 68. This included a tree that fell on a camper. |
| April 2020 | Tornado (EF0) | Vera Cruz | $15,000 | The tornado originally touched down in Clermont County at 21:50 EST and caused damage near Newtonsville. At 21:56 EST, the tornado moved into Brown County and later produced tree and structural damage near Lake Lorelei, with wind speeds of about 80 MPH. |
| April 2020 | Tornado (EF0) | Vera Cruz | $15,000 | The tornado caused tree damage along its path, with some structural damage noted to a property on State Route 131. |
| June 2019 | Thunderstorm Wind | Bardwell | $15,000 | A garage on Bardwell West Road had its roof removed and some partial wall collapses. Around the property there were numerous tree limbs snapped and and broken off, with several trees pushed over. |
| July 2017 | Thunderstorm Wind | Fayetteville | $15,000 | Numerous trees were damaged, a few trees were uprooted, and some trees were snapped in Fayetteville. In addition, roofing material was ripped off of a building and siding was torn off of another building. |
| May 2014 | Thunderstorm Wind | Aberdeen | $15,000 | Trees and wires were downed on Bramel Drive due to thunderstorm winds. One tree was reported to have impacted a mobile home. |
| April 2014 | Thunderstorm Wind | Mt Oreb | $15,000 | A tree fell on a car and clipped a house near the intersection of Water and Spice Street due to thunderstorm winds. |
| April 2011 | Thunderstorm Wind | Fayetteville | $15,000 | A roof was blown off of a barn and trees were uprooted due to damaging thunderstorm winds. |
| April 2011 | Thunderstorm Wind | Fivemile | $15,000 | A barn was destroyed and large tree limbs were down due to damaging thunderstorm winds. |