| April 2001 | Lightning | Piqua | 1 killed | Lightning struck a man near a tree at a city park. |
| June 2007 | Lightning | Troy | 3 hurt | A man and his two sons were standing underneath a tree when it was struck by lightning at the Troy Strawberry Festival. The three individuals suffered non life-threatening injuries. |
| May 2019 | Thunderstorm Wind | Tipp City | 2 hurt, $100,000 | Numerous trees were downed on the northwest side of Tipp City. Two people received minor injuries when a tree fell onto a house on Arapaho Trail. Trees also fell on several other houses in the area. In addition, athletic fencing was damaged at Tippecanoe Middle School. |
| May 2019 | Tornado (EF3) | Potsdam | 1 hurt, $10,000,000 | The tornado initially touched down in Darke County at 2125EST, about a mile southeast if Pitsburg. It moved east and entered Miami County at 2128EST along Hall Road, about a half mile northwest of Potsdam. ||As the tornado entered Miami County, significant tree damage occurred on State Route 721 south of Laura. Structural damage began to occur near the intersection of Wright Road and Markley Road, with partial roof loss to an outbuilding. On Ditmer Road and South Shiloh Road, nearly every property sustained tree damage, some of which was significant.||As the tornado neared State Route 571, structural damage became much more severe. Several homes on State Route 571 between South Shiloh Road and South Range Line Road were rendered uninhabitable. Many homes had at least partial roof removal and some sustained complete roof removal. A few homes suffered the collapse of some exterior walls and while this was more common with garage walls, it also occurred on a few well-built walls away from garages. At one home, a lawn tractor was thrown out into the adjacent field to the northeast.||Damage was very similar across the field on South Range Line Road. Two homes experienced complete roof removal, with one also having walls collapse on multiple sides of the second story of the home. Mud splatter on all sides of structures was significant, and one vehicle interior was largely covered in mud after the failure of the rear window. Another home lost a significant portion of the roof, as well as losing quite a bit of material from an interior wall after the winds had entered the structure. The rotating winds of the tornado were very obvious on this north-to-south oriented road. Along the northern portion of the tornado track, one home lost its entire roof and had it deposited hundreds of feet into the field to the west, opposite the direction of motion of the tornado. Along the southern portion of the tornado track, debris accumulated across the field, along a tree line over a quarter mile away to the east.||The width of this tornado was most evident as it passed east across Elleman Road. Damage was observed as far south as the intersection with State Route 571 and as far north as several spots along State Route 55. While the damage on State Route 55 was primarily to roofing material and trees, more significant structural damage continued to be observed a little farther south on Elleman Road.||The tornado maintained its intensity as it crossed State Route 48 about a mile and a half north of downtown West Milton. Tree damage was severe along this road, with canopy loss even to trees that remained standing. Many structures were heavily damaged or destroyed. The only known injury from this tornado occurred when a trailer home was flipped over. A well-built brick home suffered the collapse of large portions of the west-facing and south-facing walls, with near-complete roof removal. A garage adjacent to this property was flattened. A trailer home just to the south was completely destroyed, with the failure of nearly all exterior walls and even some interior walls. Debris from these homes and structures was carried about a half mile across the field, stopped only by the tree line from traveling farther.||Widespread tree damage and moderate structural damage continued to be observed as the tornado moved east across Calumet Road, Kessler-Frederick Road, and Kessler Road. One home on Kessler Road lost its entire roof and a full-size camper was thrown and wedged against the garage.||Less significant damage was observed after passing Kessler Road, where the tornado turned from the east to the southeast. Damage observed on Nashville Road south of West Kessler Cowlesville Road was limited to trees, and it is believed that the tornado dissipated somewhere in this vicinity.||This tornado was responsible for a lengthy swath of EF2 level damage, generally 120 to 130 mph, extending from State Route 571 to Kessler Road. However, damage to a few homes on State Route 571, South Range Line Road, and State Route 48, was notably more significant, with a combined degree of roof loss and exterior wall collapse that warranted an estimate of 140 mph winds, within the EF3 category. |
| March 1955 | Tornado (F1) | not stated | 1 hurt, $250,000 | no account filed |
| May 1982 | Tornado (F1) | not stated | 1 hurt, $25,000 | no account filed |
| June 2012 | Thunderstorm Wind | Piqua | 1 hurt, $10,000 | A tree fell on a pickup truck due to thunderstorm winds. One person in the truck was injured. |
| June 1996 | Lightning | Troy | 1 hurt | no account filed |
| June 1989 | Tornado (F1) | not stated | $2,500,000 | no account filed |
| May 2014 | Flash Flood | Tipp City | $1,300,000 | Water rescues were being performed across the county, but especially in the Troy and Tipp City areas for people being trapped in cars stranded by flash flooding. The flash flooding was caused by heavy rainfall. |
| June 2022 | Tornado (EF2) | West Milton | $1,000,000 | The tornado touched down west of West Milton in open farmland and was only loosely in contact with the ground as it traveled east through West Milton. Only minor tree damage was seen for the first few miles of the track, with the vast majority of the tree damage being broken limbs and a few uprooted trees.||As the tornado moved through the Nashville area and toward Tipp City, it began to strengthen and caused EF-1 category wind damage to trees, power poles, and residences along West Kessler Cowlesville Road, especially near its intersection with Peters Road.||As the tornado approached Interstate 75, it strengthened further and directly hit several large industrial warehouse buildings on both the east side and west sides of the Interstate. On the west side of the Interstate, a large warehouse suffered considerable roof damage and a complete collapse of an exterior wall. Several empty semi trailers were overturned or rolled. In this area, damage was consistent with wind speeds of around 120 mph, or EF-2 damage. ||The tornado continued across the Great Miami River into rural farmland where the intensity quickly decreased and damage to trees and outbuildings was consistent with EF-0 or low-end EF-1 damage. The tornado then lifted south-southeast of Casstown. |
| March 2024 | Tornado (EF2) | Bradford | $750,000 | The tornado developed at 1850EST in Randolph County, Indiana, just south of Farmland. The tornado traveled east across Randolph County, Indiana, and Darke County, Ohio, and entered Miami County at 1952EST, along State Route 721, just north of Grandview Drive. The tornado reached EF-2 intensity with winds of up to 120 mph near the intersection of Klinger and Rangeline Roads. Two homes had a significant amount of roof and some external wall removal while other nearby properties had outbuildings that were severely damaged.||The last damage was noted along State Route 48 near the intersection with Klinger Road. The tornado is believed to have dissipated near this location at 2000EST. |
| January 2020 | Tornado (EF0) | Troy | $500,000 | The tornado touched down initially in the southwest portions of the city of Troy and moved northeast through the center of the city. It then crossed the Great Miami River before it weakened and lifted in the far northeast portions of the city.||Much of the damage was confined to trees and roofs, both residential and commercial, as the tornado moved through the city. To the west of the Great Miami River, damage was more intermittent and weak in comparison to areas east of the Great Miami River, where more concentrated and significant tree and roof damage was noted. In particular, areas near Troy High School and along and east of North Market Street saw the most concentrated and higher end structural damage to roofing material. This included the far eastern portions of the downtown area which saw several businesses lose all or portions of their roofs.||Damage was tornadic in nature, especially on the east side of the Great Miami River, where convergent tree damage was easily noted before the tornado rapidly weakened as it left the city. Damage along the path was consistent with wind speeds ranging from 65 to 80 mph, again with the highest wind speeds estimated on the east side of the Great Miami River. |
| September 2011 | Thunderstorm Wind | Tipp City | $250,000 | Numerous large trees were sheared or uprooted. Nineteen loaded trailers were overturned and two air conditioning units were blown off a roof at a distribution center. Eight wooden high voltage electric poles were snapped. Another semi trailer was overturned on a highway. These occurrences were due to damaging thunderstorm winds. |
| April 1999 | Tornado (F1) | Tipp City | $250,000 | The tornado pushed cars off of the road, peeled siding from houses, downed several trees, damaged storage buildings and destroyed several campers and RV's on a sales lot. |
| June 1992 | Tornado (F1) | not stated | $250,000 | no account filed |
| June 1989 | Tornado (F1) | not stated | $250,000 | no account filed |
| June 1961 | Tornado (F2) | not stated | $250,000 | no account filed |
| April 2023 | Tornado (EF0) | Laura | $200,000 | The tornado first touched down near Pemberton Road, where it caused significant damage to a barn and a garage on Penny Road. The tornado continued east-northeast and moved through a commercial area on State Route 41 and then caused roof damage to several homes on the north side of Troy. Consistent damage continued to as far east as Deweese Road. Reports and photo evidence from numerous citizens in the area, in addition to emergency management officials, helped determine the extent of this tornado. Maximum winds were estimated to be around 85 mph. |
| July 2022 | Tornado (EF1) | Troy | $100,000 | The initial damage occurred near the intersection of Cheshire Road and Dorset Road, where several large tree limbs were downed. Damage became a little more concentrated near the intersection of Armand Drive and McKaig Avenue, where several large tree limbs and a few trees were downed. Tree damage also occurred at an apartment complex along Red Cedar Drive.||The most heavily concentrated area of damage occurred near Drury Lane and Ridge Avenue. Numerous very large, healthy trees were downed, with one trunk snapped at its base, and several other very large branches snapped not far off the ground. A couple of homes also had some minor roof damage. On West Simpson Street, just to|the east, a car was heavily damaged by a falling tree limb.||The damage path became narrower near Terrace Place, Market Street, and West Street. A bank sign was damaged and several more large trees and tree limbs were downed. In the neighborhood south of West Street, a few more homes had minor roof damage, with a fairly consistent area of tree damage observed as far southeast as Walker Street and Dakota Street.||Tree damage was also reported in other locations in Troy, such as Stanfield Road, West Ross Street, and Dakota Street. The rest of this damage is believed to have been caused by straight-line winds with speeds of 60 to 70 MPH. |
| May 2019 | Thunderstorm Wind | Evanston | $100,000 | Damage began on the south side of Kerr Drive, near David Drive, where trees were snapped off and several homes had shingle removal. Farther northeast, closer to I-75, more trees were broken off. Several buildings along I-75 between Floral Acres Drive and Springmeade Lane also sustained minor roof damage, including shingle and soffit removal. On the east side of I-75, several residential homes on Manchester Drive and Windsor Crossing had minor roof damage, including shingle and soffit removal. Light tree damage was also observed on the east side of I-75.||None of the damage was conclusively tornadic in nature, and was likely a result of rear-flank downdraft winds tied to a confirmed tornado a few miles to the north.||Estimated wind speeds in this area were determined to be around 60 mph. |
| June 2012 | Thunderstorm Wind | Piqua | $100,000 | Several recreational vehicles were blown over at a dealership due to thunderstorm winds. A roof of one of the show rooms was significantly damaged. |
| March 2016 | Tornado (EF0) | Potsdam | $75,000 | The first evidence of damage occurred at a property on Hall Road. A few shingles were damaged on the house and one tree had a large limb broken off. A more concentrated area of damage occurred along and east of Stauffer Road, just north of the intersection with Coppock Road. Minor tree damage was observed at several properties on Stauffer Road, with a few healthy trees downed. A pine tree near the north end of the damage path was blown toward the southeast. One home had its sheet metal roof almost completely peeled off and deposited to the west of the home. Minor shingle damage occurred to a nearby garage. There was also significant scattering of minor debris in this location, including small limbs and a play structure. A shed located behind one of the residences was also destroyed with its debris scattered northwest into an adjacent field. |
| October 2013 | Tornado (EF0) | Lena | $70,000 | The tornado touched down in a corn field on the west side of Lena-Palestine Road where it produced a clear path of heavily damaged corn stalks. The tornado then crossed Lena-Palestine Road where it destroyed a barn and strewn debris from the barn to the north and upwind of the actual tornado path. A large portion of the barn roof was lifted and thrown upwind into the top of a nearby tree. A tree was also split near this barn. The tornado then continued on the ground and produced heavy damage to a second barn north of the first barn before the tornado lifted. Based on the damage surveyed, the maximum wind speed of this tornado was estimated at 75 miles per hour. |
| April 2023 | Tornado (EF0) | Circle Hill | $50,000 | The tornado first touched down south of W Sugar Grove Circle Hill Road. It then tracked east through Sugar Grove before ending with damage near Mowry Road. Reports and photo evidence from numerous citizens in the area, in addition to emergency management officials, helped determine the extent of this tornado. Maximum winds were estimated to be around 80 mph. |
| January 2020 | Tornado (EF0) | Farrington | $50,000 | The tornado first touched down on the north side of East Peterson Road, about 4 miles southwest of Fletcher. It then crossed North Union Shelby Road, moved across the Big Woods Reserve, and then moved across the far southeast portions of the town of Fletcher. The tornado lifted about 2 miles northeast of Fletcher in an open field after it removed a portion of a barn roof on Snyder Road.||Damage consisted mainly of broken and snapped off trees and roof damage to barns and outbuildings. Snapped electrical poles were assessed on the east side of Fletcher. Residential structures were impacted either with shingle and soffit removal, or with trees having fallen on them. |
| May 2019 | Tornado (EF0) | Troy Skypark Arpt | $50,000 | Damage from this tornado is believed to have begun at a residence on Monroe Concord Road, where minor tree damage was observed, along with damage to a shed. Further to the northeast, at a property on Peters Road, just north of Interstate 75, an outbuilding suffered partial loss of some roofing material.||Damage appeared to be most significant in a subdivision south of Swailes Road. Dozens of trees were downed or damaged within this subdivision, which included Linconshire Drive, Fiesta Drive, Greenlawn Drive, and Windmere Drive. Although tree damage was fairly widespread, there were no obvious signs of structural damage to any of the homes.||Just west of South County Road 25A, a barn was sustained a partial roof loss. Several trees were also downed at this property.||Minor tree damage was observed further to the northeast along State Route 202, Knoop Road, and South Childrens Home Grayson Road. The tornado is believed to have dissipated somewhere near South Childrens Home Grayson Road, south of State Route 41.||Damage was consistent with an EF0 tornado with maximum winds of 70 mph. |
| May 2017 | Tornado (EF1) | Brandt | $50,000 | The tornado first touched down on the western side of Park Layne in Clark County at 2016EST and entered Miami County at 2020EST, about 1.7 miles east-southeast of Brandt. The tornado continued in Miami County for another 4.1 miles before dissipating along State Route 571, west of State Route 201. ||While in Miami County, tree and minor roof damage occurred along Bellefontaine Road, Palmer Road, and State Route 201, with maximum wind speed estimates of 95 mph in this area, or EF1. The tornado track appeared to end just northwest of the State Route 571 intersection with State Route 201, where a barn sustained damage caused by estimated wind speeds of around 80 mph. The maximum width in Miami County was 300 yards. This tornado was rated an EF1 in both Miami and Clark Counties. |
| December 2013 | Flood | Covington | $50,000 | High standing water up to three feet deep was covering roads around Covington with cars submerged. |
| October 2013 | Thunderstorm Wind | Casstown | $50,000 | East Northeast of Casstown, a roof was blown off a garage, a 27 foot camper was blown into a field, large trees were downed, and a house had a chimney blown off due to thunderstorm winds. |
| August 2000 | Thunderstorm Wind | Piqua | $50,000 | Many trees and power lines were blown down across the county. In Piqua alone, at least 130 trees were knocked down, 12 homes damaged severely, and 3 vehicles were nearly destroyed. |
| June 1995 | Thunderstorm Wind | Piqua | $50,000 | A roof was blown off a hanger, damaging three small planes. Several trees were also downed, one damaging a house. |
| May 1994 | Thunderstorm Wind | Troy Piqua | $50,000 | Trees were downed and a recreational vehicle was overturned in Spring Creek Township. Trees were also reported downed in Troy and Piqua. |
| July 1994 | Thunderstorm Wind | Troy | $50,000 | Trees were downed, some on cars and power lines. |
| June 2023 | Tornado (EF0) | Ginghamsburg | $30,000 | The tornado first touched down on the west side of South Tipp-Cowlesville Road where a detached garage had part of its roof lifted and removed, with concentrated tree damage throughout the rest of the property. Some roofing material was carried across South Tipp-Cowlesville Road into adjacent fields, approximately 200 yards downstream. On the east side of South Tipp-Cowlesville Road, a grove of trees sustained some damage with large branches snapped and broken off. The tornado then continued northeast toward Tipp Canal Road, where it likely lifted on the west side of the road in an open field. Here, trees on the west side of the road in the distance clearly had been snapped and broken off near the top.||The damage was consistent with wind speeds of around 70 mph. |
| December 2015 | Thunderstorm Wind | Pleasant Hill | $30,000 | Multiple buildings were damaged at 1845 North Rangeline Road. |
| July 2022 | Thunderstorm Wind | Eldean | $25,000 | Numerous trees and power poles were downed throughout Miami County. |
| June 2017 | Thunderstorm Wind | Laura | $25,000 | On Fenner Road, just to the west of Rangeline Road, one barn was partially destroyed with only some of it still standing, while a second one had major damage. |
| July 2004 | Tornado (F0) | West Milton | $25,000 | A tornado briefly touched down, causing severe damage to a house with its front porch ripped away from the frame. Aluminum siding and much of the roof was peeled off the house. Five trees were uprooted. |
| June 1984 | Tornado (F1) | not stated | $25,000 | no account filed |
| May 1982 | Tornado (F1) | not stated | $25,000 | no account filed |
| July 1978 | Tornado (F0) | not stated | $25,000 | no account filed |
| July 1961 | Tornado (F1) | not stated | $25,000 | no account filed |
| May 2019 | Tornado (EF0) | Garland | $20,000 | This tornado first impacted a property north of Montgomery County Line Road and just east of State Route 721, where very minor damage to farm equipment was observed. Roof damage was observed at the next property to the southwest, with tree damage at a home directly north of Montgomery County Line Road. It was at this point, just north of the Phillipsburg Airport, that the tornado continued southeast into Montgomery County. The tornado ended in Montgomery County, at a property on N Diamond Mill Road at 2224EST.||Damage in Miami County was consistent with an EF0 tornado with 80 mph winds. |
| December 2013 | Flood | Troy | $20,000 | Ten to twelve home evacuations were required near the Great Miami River. Two water rescues occurred from people driving into the flood waters. |
| July 1998 | Thunderstorm Wind | Countywide | $20,000 | Trees downed across the county. |
| June 1996 | Lightning | Covington | $20,000 | no account filed |
| November 2020 | Thunderstorm Wind | Troy | $15,000 | Numerous trees were downed throughout the county. |
| June 2017 | Thunderstorm Wind | Ludlow Falls | $15,000 | On Horseshoe Bend Road, just west of St. Rt. 48, a barn was completely flattened. Also, several large trees and power poles were knocked down. |
| June 2017 | Thunderstorm Wind | Ludlow Falls | $15,000 | Power lines were knocked down near Elleman Road. |
| July 2006 | Thunderstorm Wind | Troy | $15,000 | Numerous trees and powerlines were downed. A building sustained roof damage at the Miami County Fairgrounds. A tree also fell on a vehicle, causing minor damage. |
| January 1997 | Thunderstorm Wind | Fletcher | $15,000 | no account filed |
| June 2025 | Thunderstorm Wind | Covington | $10,000 | It was reported that 10 to 15 large trees were downed on a property. Additionally, some corn in a farm field was damaged by the wind. |
| July 2025 | Thunderstorm Wind | Cowlesville | $10,000 | Numerous trees were downed on the south side of the city of Troy. |
| July 2023 | Thunderstorm Wind | Eldean | $10,000 | Several trees and power lines were downed. |
| July 2023 | Thunderstorm Wind | West Milton | $10,000 | A few trees and power lines were downed. |
| June 2020 | Thunderstorm Wind | Pleasant Hill | $10,000 | Trees and wires were reported down throughout Newton Township. |
| June 2020 | Thunderstorm Wind | Evanston | $10,000 | Numerous trees and wires were reported down in Monroe Township. |
| June 2020 | Tornado (EF0) | Sugar Grove | $10,000 | A brief tornado touchdown occurred south of Covington in Miami County Ohio. The tornado appears to have touched down just west of the Stillwater River near North Owens Road. The tornado caused tree damage along West Sugar Grove Road as it moved east. The tornado lifted before it reached Ohio Route 48. Based on pictures of the tree damage, this tornado was rated as EF-0 on the Enhanced Fujita Scale, with maximum winds of 70 mph. |
| May 2019 | Thunderstorm Wind | Piqua | $10,000 | A tree fell onto a house in Piqua. |
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