Thunderstorms developed during the evening hours along a warm front lifting slowly north across the region. Many of the thunderstorms produced tornadoes, including a few strong to violent tornadoes.

Tornado in MERCER, OHIO
From 27-MAY-19 21:02:00 to 27-MAY-19 21:17:00 (EST-5)
Location: DURBIN
Tornado F-scale: EF3
Property damage: 15.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado appeared to have first touched down west of Celina, near the intersection of Township Line Road and Bunker Hill Road, where about half of a barn's metal roof was removed and strewn in a narrow path to the east-northeast. At least two other barns also lost nearly half of their metal roofing in the vicinity of Bunker Hill Road. Numerous trees in this area, with trunk diameters of 18 to 24 inches, were also snapped and blown down in various directions. This type of damage was consistent with wind speeds of up to 90 mph and associated with an EF1 tornado.
The next damage occurred to homes and adjacent outbuildings along Mud Pike Road, immediately southeast of the intersection with State Route 118. Two homes retained their main roof structure but many shingles were removed. Two outbuildings and a larger barn were destroyed, likely resulting from EF1 tornado winds of 100 to 110 mph. Additional damage occurred along Hellwarth Road, just south of the intersection with Fairground Road. Several homes and outbuildings were damaged, with the most serious being a home that lost much of its roof and some exterior walls. High-end EF2 tornado winds of 125 to 135 mph likely caused the worst damage at this location.
The tornado path continued generally along Fairground Road from just east of the intersection with Hellwarth Road to the western corporation limit of the city of Celina. Homes, outbuildings, trees and utility poles were damaged here, and a free-standing cellular communication tower was knocked down. At least two homes suffered partial roof loss and one home lost its entire roof. The cellular tower was a lattice structure at least 300 feet tall and two of the three support attachments at the ground were broken. A 50 to 100 yard swath of trees were snapped and uprooted in a forested area leading up to the western edge of Celina. The damage to the cellular tower and trees was indicative of EF2 tornado wind speeds of 125 to 135 mph.
More substantial damage was observed just inside the western corporation limit of the city of Celina, along Fairground Road. At least a dozen homes were severely damaged here, with roofs completely uplifted and removed, along with many exterior walls collapsed. One residence was completely lifted from its foundation, with interior walls largely intact, and dropped in an adjoining field approximately 70 yards to the north-northeast. This residence was anchored to a cinder block foundation, with the upper level or two of blocks breaking from the rest under the force of the wind. Significant mud spatter was also observed on what remained of these homes, especially on the north and northeast facing sides, implying a strongly rotating column of air in contact with a nearby muddy field. This type of damage was consistent with wind speeds up to 150 mph and associated with an EF3 tornado. In this area along Fairground Road, a vehicle was thrown into a house, killing a person inside of the house.
Significant damage continued into a cluster of homes near and northwest of the intersection of Fairground Road and Touvelle Street in Celina. At least two dozen of these homes had partial or complete roof failure and many exterior walls collapsed. Two residences on either side of Jill Avenue were missing large portions of their exterior walls, indicative of winds as high as 140 to 150 mph and associated with an EF3 tornado. Evidence of multiple vortices within the tornado was also evident in the debris pattern here. Several cars were displaced by the wind and uplift in this neighborhood. A thick layer of mud was also spattered on the east and northeast facing sides of these structures, largely opposite the direction of the incoming tornado.
The degree and extent of damage started to gradually lessen east-northeast from near Touvelle Street to U.S. 127. From there the tornado continued to track farther northeast to near the community of Neptune. An approximately 100 yard swath of trees were snapped and uprooted in a small forested area between U.S. 127 and Celina-Mendon Road, north of Myers Road. A garage roof was displaced off the main structure along Celina-Mendon Road, between State Route 197 and Howick Road, causing exterior walls to also collapse. This damage was likely the result of EF2 tornado winds of 115 to 125 mph.
A garage was destroyed along State Route 197, just northeast of the intersection with Rice Road. A house farther northeast along Riley Road, just south of the intersection with State Route 197, suffered partial roof removal along with the collapse of a few exterior walls. Based on the damage, wind speeds here were estimated to be at the upper-end of the EF1 range, between 100 and 110 mph. A debris path was evident into the field immediately east-northeast, where the tornado appeared to finally lift.

Tornado in DARKE, OHIO
From 27-MAY-19 20:48:00 to 27-MAY-19 20:50:00 (EST-5)
Location: GLEN KARN
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado initially touched down just inside the Ohio state line in southwest Darke County, about 2 miles south of the village of Hollansburg. Damage began as downed trees along with a barn roof and walls that were lifted and carried about 200 yards downwind on Hollansburg-Richmond Road. There was evidence of a convergent debris pattern and some evidence of back splatter, indicative of a tornado. The tornado continued over open fields until it destroyed another barn, just south of Moore Road, completely removing the roof and roof joists and collapsing exterior walls. There was also siding and awning damage to the home, as well as a large uprooted tree. The damage in this area was consistent with EF1 winds of 90 mph.
The tornado continued to Payne Road, resulting in some roof and siding damage to a barn, more indicative of EF0 damage.

Tornado in DARKE, OHIO
From 27-MAY-19 21:25:00 to 27-MAY-19 21:28:00 (EST-5)
Location: PITSBURG
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Damage from this tornado is believed to have begun near the intersection of Schnorf-Jones Road and Stocker Road in Darke County, just over a mile southeast of Pitsburg. From here, the tornado traveled east, affecting West River Red Grove Road. Damage along these roads was generally limited to trees. The tornado crossed into Miami County at 2128EST along Hall Road, about 4 miles east of Pitsburg.  The tornado continued to move east across Miami County, eventually ending at 2144EST, about 4 miles southwest of Troy. While the tornado produced low-end EF3 damage in Miami County, the maximum strength in Darke County was consistent with EF1 damage and the maximum tornado width was about 1200 yards.

Tornado in GREENE, OHIO
From 27-MAY-19 22:13:00 to 27-MAY-19 22:32:00 (EST-5)
Location: NEW GERMANY
Tornado F-scale: EF3
Property damage: 50.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado first touched down in Riverside in far eastern Montgomery County at 2212EST before quickly moving into western Greene County at 2213EST. The tornado continued to move east across western and central Greene County before lifting along U.S. 68, about 5 miles north of Xenia.
There were two locations along the track of this tornado in the Beavercreek area where damage was indicative of EF3 intensity. The first was in the vicinity of I-675 and Grange Hall Road. Several homes along Rushton Drive had entire roofs lifted, as well as the collapse of several exterior walls with only interior walls left standing. Additional homes along Gardenview and Wendover Drives experienced high-end EF2 damage with windows shattered, garage doors collapsed and entire roof structures removed.
Additional EF3 damage occurred in Beavercreek near Anna Laura Lane. In this area, some buildings of an apartment complex had large sections of roofs removed and exterior walls on upper levels collapsed, leaving just interior walls standing.
Most of the damage from near Grange Hall road eastward to businesses near North Fairfield Road was EF2 to EF1 type damage, where some concrete block businesses had partially collapsed walls and roof lift off.
Much of the tornado path occurred from roughly 0.5 miles north of Kemp Road to within 0.1 miles south of Kemp Road, within the limits of Beavercreek. As the tornado moved east-southeast into Beavercreek township, the damage became more consistent with EF0, to occasionally lower-end EF1, damage. This included damage along Fairground, Beaver Valley and Ludlow Roads. The tornado damage ended just to the east of U.S. 68 in Xenia Township, where roof and tree damage occurred just north of Clifton Road. This was also consistent with high-end EF0 to low-end EF1 damage.

Tornado in MONTGOMERY, OHIO
From 27-MAY-19 21:41:00 to 27-MAY-19 22:13:00 (EST-5)
Location: PYRMONT
Tornado F-scale: EF4
Property damage: 500.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado initially touched down just west of Brookville and areas on the south side of Brookville sustained heavy damage, consistent with high-end EF2 wind speeds. Numerous homes suffered significant roof damage and removal, including exterior wall collapse and complete garage destruction.
The tornado then carved a path east through Trotwood where damage consistent with EF2 wind speeds was widespread and some homes sustained damage consistent with EF3 wind speeds. Structures here again featured roof removal and exterior wall collapse. This was particularly true on the south side of Westbrook Road. A large number of homes and apartment complexes were impacted further east in Trotwood, with most of this damage consistent with high-end EF2 wind speeds.
The highest winds were estimated to have occurred in a corridor from eastern Trotwood (between Shiloh Springs Road and Westbrook Road), then southeast between Shiloh Springs Road and Turner Road, into areas along the Stillwater River/Riverside Drive area. Embedded within this zone was higher-end EF3 damage. Areas near Riverside Drive and the Stillwater River exhibited damage consistent with wind speeds of 170 mph, or lower-end EF4 damage. This damage included well-built apartment buildings that sustained complete roof and exterior wall removal. In addition, significant tree devastation was found along the Stillwater River, east of Riverside Drive, that included numerous trees that were debarked and nubbed down to the trunk.
The tornado continued southeast through Dayton and Northridge, and crossed I-75 into the Old North Dayton Area, where heavy damage continued to homes and businesses. As the tornado entered Riverside, damage began to lessen in intensity, but plenty of damage consistent with EF1 wind speeds was noted. The tornado continued further to the southeast, causing damage in a subdivision north of Burkhardt Road. The roof of an apartment building on Dodge Court was removed. This is the final known damage caused by this tornado.
An 86 year old woman died (indirect) on September 1st, 2019, in part due to injuries suffered when she was trapped in her home during the tornado.

Tornado in HOCKING, OHIO
From 28-MAY-19 00:17:00 to 28-MAY-19 00:28:00 (EST-5)
Location: SOUTH PERRY
Tornado F-scale: EF2
Property damage: 1.50M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado initially touched down about 50 yards west of Union Road/Township Highway 145, where extensive and somewhat severe tree damage was observed at multiple points. More significant structural damage was observed at a home on Wolfe Road, where the second level was completely destroyed and removed from the structure. Windows were blown out of cars on the property and a garage was also completely destroyed. Other homes in the vicinity received minor structural damage, including partial roof removal from several homes. Nearby trees were debarked with significant and severe tree damage extending a bit further east. This continuation of severe and widespread tree damage, including large swaths where trees appeared to have been mowed down, was observed via an aerial survey. Sheared off and flattened tree swaths had widths extending at least several hundred feet. It is because of the aerial footage, as well as on-ground survey efforts, that it was determined that the tornado width grew up to one quarter mile in width east of Union Road, leading up to Middle Fork Road. Here, several homes were impacted, with one of the homes severely damaged. A large propane tank had been thrown 20 to 30 feet from its original resting position. Moreover, a 7000 pound truck was thrown into a house. Widespread significant and severe tree damage was observed in this vicinity as well, including several instances of debarking.
The tornado continued on an eastward path east of Middle Fork Road to Long Run Road. Extensive and widespread significant tree damage was observed in this highly forested area. Several more structures along Long Run Road were damaged, either by the tornado itself or by the large trees downed throughout the area. One mobile home had a tree sever the structure in half. Downed trees in this area were several yards in diameter. Here, it is believed that the tornado maintained a width of up to one quarter of a mile.
A bit further to the east, additional but more minor tree damage was observed along Clapper Hollow Road. Tree damage in this area was less severe and less widespread than points further west. Little to no additional tree or structural damage was observed further east of Clapper Hollow Road. Therefore, it is believed that the tornado lifted shortly after passing east of Clapper Hollow Road.

Tornado in MIAMI, OHIO
From 27-MAY-19 21:47:00 to 27-MAY-19 22:03:00 (EST-5)
Location: TROY SKYPARK ARPT
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Tornado in AUGLAIZE, OHIO
From 27-MAY-19 22:01:00 to 27-MAY-19 22:02:00 (EST-5)
Location: WAYNESFIELD
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado was captured on video from Waynesfield Goshen High School. The tornado snapped a few small trees with trunk diameters approximately 3 inches or less, located around the front parking lot of the high school near North Westminster Street. The tornado then crossed over the main building in the video and emerged behind the school. The tornado was last seen on the video moving east-southeast away from the school, and no further damage was observed nearby. Since small trees sustained the only visible damage, this tornado was classified as a low-end EF0 with winds of approximately 65 mph.

Tornado in PICKAWAY, OHIO
From 27-MAY-19 23:57:00 to 28-MAY-19 00:05:00 (EST-5)
Location: HAYESVILLE
Tornado F-scale: EF1
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado is believed to have first touched down just west of Circleville-Kingston Road, along which there was a structure that sustained some minor roof damage close to the intersection with Gay-Dreisbach Road.
A bit further to the east, at the next north-south oriented road (Gay-Dreisbach Road), several structures sustained more significant damage. In particular, a house had its garage destroyed, with the roof removed completely and placed in the yard. Some structural damage also occurred to the connecting wall to the main house. It was at this location where some of the most severe damage associated with this tornado was observed to have occurred. Damage at this property along Gay-Dreisbach Road was consistent with estimated winds of around 100 mph.
An additional area of damage believed to be tornadic in nature was near the intersection of Ludwig-Dresback Road and Morris Salem Road, where several large trees were downed and minor roof damage was observed at a property on Ludwig-Dresback Road. A barn was also damaged on the same property. Further southeast, sporadic, but locally extensive, tree damage and minor structural (siding/roof) damage was observed at several properties on Zane Trail Road near Morris Salem Road.
Just south of the intersection of Morris Salem and Zane Trail Roads, extensive tree damage was observed at multiple properties on Morris Salem Road. An outdoor structure at a residence was completely destroyed with the garage of the home also dismantled. A corner of a home at the same property was also severely damaged, with a portion of the wall partially removed, leaving a gaping hole in the corner of the structure. Debris from the structures and tree damage were strewn in the nearby fields.
Further east and southeast, sporadic tree and minor structural damage was observed at several locations just east of Morris Salem Road. However, damage was not observed much further to the south or east, and therefore it is believed the tornado lifted just east of Morris Salem Road, south of Zane Trail Road. Damage in these areas was consistent with an EF0 tornado, particularly at the properties near the intersection of Morris Salem Road and Zane Trail Road.

Tornado in PICKAWAY, OHIO
From 28-MAY-19 00:09:00 to 28-MAY-19 00:11:00 (EST-5)
Location: STRINGTOWN
Tornado F-scale: EF1
Property damage: 1.50M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The beginning of the tornado-related damage was observed on State Route 56, just west of the Salt Creek Elementary School. A property along this stretch of road sustained extensive roof damage in which nearly the entire roof was removed from the structure. Significant debris scatter of lumber and insulation was observed on this property and surrounding properties. Splatter was observed on the southward-facing facade of the structure, with several pieces of lumber forced into the ground of the yard.
At a nearby structure on Kime-Holderman Road, just south of State Route 56, minor siding damage was observed on the north-facing side of the home. Part of the roof of this house was also removed. Extensive tree damage was also observed near the intersection of Kime-Holderman Road and State Route 56. Another home on State Route 56, just west of Salt Creek Elementary School, had minor roof damage.
A bit further east, approximately across the street from Salt Creek Elementary School, a home being constructed had several walls removed from the structure. Additionally, a barn on a property nearby sustained some roof damage, but the nearby home appeared to have little to no visible damage.

Slightly farther east on State Route 56 and about two tenths of a mile south of South Perry Road, an outbuilding was completely destroyed and the home on the property sustained partial roof removal and wall damage/failure. Several large trees were also downed in this vicinity. The damage observed on this property, between State Route 56 and Tarlton-Adelphi Road, was some of the most significant associated with this tornado and was likely the result of winds in excess of 100 mph.
Along the western side of Tarlton-Adelphi Road, extensive tree damage and some minor structural damage was observed on several properties. Extensive debris was strewn across the nearby fields just east of these structures. However, a review of locations further east showed little to no signs of visible damage from the public access points and therefore it was determined that the tornado likely lifted here.

Flood in FAIRFIELD, OHIO
From 28-MAY-19 01:00:00 to 28-MAY-19 02:00:00 (EST-5)
Location: STOUTSVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A creek was out of its banks and still rising.

Tornado in AUGLAIZE, OHIO
From 27-MAY-19 21:33:00 to 27-MAY-19 21:35:00 (EST-5)
Location: MOULTON
Tornado F-scale: EF1
Property damage: 500.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado appears to have touched down very close to Kettlersville Road, just south of the intersection with County Road 33A. Extensive damage occurred here to a barn, grain silo, trees, and a 19th century residence. The north end of the barn was destroyed and the grain silo was lifted and rolled approximately 150 yards to the northeast. A swirl pattern was evident as well in vegetation along the shore of a pond near where the grain silo fragment came to rest. The back room and associated roof of the 19th century residence was pulled from the main structure, along with the plumbing fixtures and a portion of the concrete sub-floor. The structure and contents of the room and barn were scattered to the northeast along a path approximately 50 yards wide. Several pine trees with trunks approximately 8-10 inches wide were also snapped near the residence. This damage and its dispersal pattern was consistent with 100 to 110 mph winds of an EF1 tornado.
The tornado next crossed County Road 33A between Kettlersville Road and Kohler Lane, damaging power poles along County Road 33A. Two barns and another outbuilding on a property just north of the road were also destroyed. Only small segments of the barns were still standing, suggesting 100 to 110 mph (EF1) winds along this portion of the track. The debris from these structures was scattered over a large area of the adjoining field to the north, northeast and east near the intersection of County Road 33A and Woodland Drive. The tornado likely didn't track directly over this entire area, but instead debris was probably lofted and thrown free of the circulation in many directions, before falling back to the ground nearby.
An absence of damage for approximately 150 yards to the east of the field suggests the tornado briefly lifted, then descended again to strike two more barns and the north side of a house. Both barns lost their roofs and at least half of their exterior walls. Some roof damage also occurred to the house. Debris from these structures was lofted and then dropped to the east in an adjacent field and on both sides of US Route 33.
As the tornado continued east-northeast, it left visible striations in field vegetation and destroyed an outbuilding just west of the County Road 33A overpass across US Route 33. A large portion of the outbuilding was lifted and carried approximately 150 yards to the area just west of the overpass and dropped on the road, where a semi truck crashed into it. The semi driver was injured in the crash. The degree and pattern of damage both here and at the adjacent property to the west are indicative of 100 to 110 mph winds of an EF1 tornado.
No further damage was noted on the north side of US Route 33 or east of the overpass, so dissipation of the tornado likely occurred at this point.

Tornado in MIAMI, OHIO
From 27-MAY-19 21:28:00 to 27-MAY-19 21:44:00 (EST-5)
Location: POTSDAM
Tornado F-scale: EF3
Property damage: 10.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Thunderstorm Wind in MIAMI, OHIO
From 27-MAY-19 21:45:00 to 27-MAY-19 21:47:00 (EST-5)
Location: EVANSTON
Magnitude: 52.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Hail in GREENE, OHIO
From 27-MAY-19 22:12:00 to 27-MAY-19 22:14:00 (EST-5)
Location: ZIMMERMAN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Flash Flood in GREENE, OHIO
From 27-MAY-19 23:30:00 to 28-MAY-19 00:00:00 (EST-5)
Location: CEDARVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Six to eight inches of water was flowing over Fishworm Road near U.S. 42.

Tornado in DARKE, OHIO
From 27-MAY-19 21:04:00 to 27-MAY-19 21:06:00 (EST-5)
Location: NEW MADISON
Tornado F-scale: EF1
Property damage: 500.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado briefly touched down in and near the village of New Madison. Much of the damage was consistent with EF0 wind speeds, as numerous large tree branches were damaged and minor roof damage occurred to structures. There was some damage indicative of EF1 winds of around 90 mph, namely large sections of roof uplifted at a lumber yard barn storage building. Elsewhere through the village, there was brick damage to the front facade of a downtown business, in addition to broken windows and some uplift of roof material. Much of this damage was more indicative of EF0 winds.

Hail in MIAMI, OHIO
From 27-MAY-19 10:30:00 to 27-MAY-19 10:32:00 (EST-5)
Location: TIPP CITY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm Wind in BUTLER, OHIO
From 27-MAY-19 15:58:00 to 27-MAY-19 16:00:00 (EST-5)
Location: MONROE
Magnitude: 45.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A tree was downed on Britton Lane between State Route 63 and Ohio Avenue.

Thunderstorm Wind in WARREN, OHIO
From 27-MAY-19 16:10:00 to 27-MAY-19 16:12:00 (EST-5)
Location: OTTERBEIN
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

Several trees were downed along Shakers Run Boulevard.

Thunderstorm Wind in WARREN, OHIO
From 27-MAY-19 16:15:00 to 27-MAY-19 16:16:00 (EST-5)
Location: LEBANON WARREN CO AR
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The wind gust was measured at the Warren County Airport.

Hail in DARKE, OHIO
From 27-MAY-19 21:28:00 to 27-MAY-19 21:30:00 (EST-5)
Location: GORDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Tornado in AUGLAIZE, OHIO
From 27-MAY-19 21:47:00 to 27-MAY-19 21:54:00 (EST-5)
Location: ST JOHNS
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado appears to have first touched down in a small wooded area along Town Line Road, south of the intersection with Middle Pike. Hardwood trees, with trunk diameters between 6 to 18 inches, were uprooted and snapped here. Debris was lofted and carried northeast up to approximately 100 yards. This damage was likely the result of 75 to 85 mph winds associated with an EF0 tornado.
The next damage point was along Middle Pike, east of the intersection with Town Line Road. The wooden supports of approximately 75 yards of guardrail were bent over or snapped toward the north and some roofing was removed from a small outbuilding on the north side of the road. One barn was destroyed and another was damaged farther northeast near the intersection of Blank Pike and Stiles Road, where debris was lofted and dropped in a field 100 to 150 yards to the northeast. EF0 tornado winds likely ranged from 75 to 85 mph in both of these locations.
The tornado then appeared to lift briefly before touching down again on Boundry Road, north of Blank Pike. Structural damage to a barn and a small shed occurred here. Trees with trunk diameters of approximately 6 to 12 inches were also snapped, lofted and carried 50 to 100 yards. The EF0 tornado winds here were estimated to be between 65 and 75 mph.

Tornado in MIAMI, OHIO
From 27-MAY-19 22:08:00 to 27-MAY-19 22:09:00 (EST-5)
Location: ALCONY
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A very brief/weak tornado touched down just south of Alcony along State Highway 41 and moved northeast for about a mile before crossing State Highway 41 and dissipating just before the Clark County line.
The path featured intermittent tree damage consisting of a few uprooted trees, and a few trees snapped off high above the ground. A fence row near the end of the tornado track had collected roofing material and tree debris from an unknown source, indicating  that a roof and tree limbs along the path likely were partially removed and lifted downstream. The tornado may not have been in full contact with the ground over the entire path length, but there was a clear path of sporadic tree damage that aligned with strong rotation seen at very low levels (100 feet AGL) on the Dayton Terminal Doppler Weather Radar (TDAY) which is located just a few miles west of the location.
Based on the damage, the maximum wind speeds were estimated to be around 70 mph.

Hail in GREENE, OHIO
From 27-MAY-19 10:15:00 to 27-MAY-19 10:17:00 (EST-5)
Location: BRYON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MONTGOMERY, OHIO
From 27-MAY-19 22:11:00 to 27-MAY-19 22:13:00 (EST-5)
Location: SULPHUR GROVE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GREENE, OHIO
From 27-MAY-19 22:15:00 to 27-MAY-19 22:17:00 (EST-5)
Location: BRYON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GREENE, OHIO
From 27-MAY-19 22:29:00 to 27-MAY-19 22:31:00 (EST-5)
Location: YELLOW SPGS
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GREENE, OHIO
From 27-MAY-19 22:31:00 to 27-MAY-19 22:33:00 (EST-5)
Location: CEDARVILLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GREENE, OHIO
From 27-MAY-19 10:31:00 to 27-MAY-19 10:33:00 (EST-5)
Location: CEDARVILLE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Tornado in MIAMI, OHIO
From 27-MAY-19 22:19:00 to 27-MAY-19 22:20:00 (EST-5)
Location: GARLAND
Tornado F-scale: EF0
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

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.

Tornado in MONTGOMERY, OHIO
From 27-MAY-19 22:20:00 to 27-MAY-19 22:24:00 (EST-5)
Location: MEYER ARPT
Tornado F-scale: EF0
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado first touched down in southern Miami County at 2219EST, at a property north of Montgomery County Line Road and just east of State Route 721. The tornado moved southeast and entered Montgomery County, just north of the Phillipsburg Airport, at 2220EST. Roof damage was then observed at two structures at a property west of Hartman Road, with one outbuilding suffering the removal of half of its roof. Additional minor tree damage was observed further to the southwest. The final known damage from this tornado was at a property on N Diamond Mill Road, where a grain bin was
thrown into the field to the east. Damage was consistent with an EF0 tornado with 80 mph winds.

Tornado in HARDIN, OHIO
From 27-MAY-19 22:28:00 to 27-MAY-19 22:30:00 (EST-5)
Location: YELVERTON
Tornado F-scale: EF0
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado is believed to have initially touched down in an open field behind a residence on Township Highway 95, Gunn Road, and began moving southeast. Two residences on TH 95 were impacted on the west side of the road. Numerous trees were snapped or uprooted with a grill thrown more than 50 feet. On the east side of the road, large limbs were downed and portions of a barn roof and several barn doors were removed. Tree limbs from the residence on the west side of the road were found to have been thrown well downstream, and the barn material from the residence on the east side was found wrapped in tree stands more than a half mile to the southeast, on the east side of TH 115. More large trees were found to have been snapped and thrown in tree stands between TH 95 and TH 115.
The tornado continued southeast and began to lift as it crossed TH 119, Silver Creek Road. On the east side of TH 119, more limbs were found to be thrown, albeit these limbs were considerably smaller than larger branches found along the first mile of the path. The tornado is believed to have lifted in an open field west of US Highway 68.
Damage along the path was consistent with wind speeds from 65 to 75 mph, or EF0.

Tornado in MONTGOMERY, OHIO
From 27-MAY-19 22:12:00 to 27-MAY-19 22:13:00 (EST-5)
Location: EASTVIEW
Tornado F-scale: EF2
Property damage: 500.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado first touched down in the Page Manor subdivision in Riverside, just west of the Montgomery/Greene County line. Damage to numerous trees and structures occurred in this area, including partial roof removal of several apartment complexes. This damage appeared to be caused by low-end EF2 winds. The tornado continued east into Greene County, before lifting about 5 miles north of Xenia at 2232EST. This tornado was rated as an EF3 based on damage that occurred in Greene County.

Tornado in MONTGOMERY, OHIO
From 27-MAY-19 22:34:00 to 27-MAY-19 22:45:00 (EST-5)
Location: SPANKER
Tornado F-scale: EF2
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado touched down initially just south of I-70, near Little York Road and Dog Leg Road, and traveled southeast. It produced damage consistent with EF2 wind speeds at several locations to the west of I-75, most notably on Cricket Lane and on Coppersmith Avenue in vicinity of Brantford Road. Several homes in this area had complete or near complete roof removal, with some collapse of an exterior wall. Tree damage was significant in this area as well. The tornado continued east while crossing I-75, where damage to businesses in this area was consistent with mostly EF1 and some low-end EF2 wind speeds. The tornado continued southeast and began to weaken and lift approximately in the vicinity of Needmore Road.

Tornado in GREENE, OHIO
From 27-MAY-19 23:23:00 to 27-MAY-19 23:32:00 (EST-5)
Location: JAMESTOWN
Tornado F-scale: EF0
Property damage: 200.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The beginning of this tornado is believed to have occurred along South Charleston Road where homes on both sides of the road had multiple large hardwood trees snapped. One residence also had a shed completely destroyed and metal from the shed was blown into the field.
On the next road east across the field, on Rogers Road, the most significant damage from the tornado was observed. The second story of one home had much of its roof removed and had multiple interior walls collapsed. Tree damage was also significant at this property as well as at nearby residences on Rogers Road.
Further east, at a property along Watkins Road, a roof was ripped off of a barn, with a shed completely destroyed. A bit further to the east, along Sheley Road, a home and garage had siding removed. Several hardwood trees were snapped in this area as well. A barn roof was also removed south of the intersection of Sheley and Rogers Road. Windows were also blown out at another property along Sheley Road. No further damage was observed to the east of Sheley Road.

Tornado in GREENE, OHIO
From 27-MAY-19 22:48:00 to 27-MAY-19 22:55:00 (EST-5)
Location: GRAPE GROVE
Tornado F-scale: EF1
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado appears to have begun on Lackey Road, where the first visible signs of tree damage were observed. The tornado is believed to have then moved across the field between Lackey Road and South Charleston Road.
Damage was next observed on Paullin Road, where one residence had minor structural damage with some roof and siding removed. Additionally, multiple large tree limbs were downed in the vicinity. There was also a power pole that was knocked down along Paullin Road. Evidence of a tornadic circulation could be seen in the field to the southeast of Paullin Road.
The most significant damage from this tornado occurred along Watkins Road, where splatter of mud, dirt and insulation were observed on all sides of a residence. Several windows were blown in, with some roof and siding damage observed on multiple sides of the home. The carport was also destroyed. Damage at this residence was consistent with EF1 tornadic damage. The tornado then continued east, crossing into Fayette County at 2255EST, about 4 mile northeast of Jamestown. The tornado then came to an end at 2257EST, about 1.3 miles north-northwest of Pleasant View.

Tornado in FAYETTE, OHIO
From 27-MAY-19 22:55:00 to 27-MAY-19 22:57:00 (EST-5)
Location: PLEASANT VIEW
Tornado F-scale: EF0
Property damage: 3.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The tornado first touched down in Greene County, about 4 miles north of Jamestown. The tornado traveled southeast before turning more easterly as it entered Fayette County about 4 miles northeast of Jamestown. While in Fayette County, a few tree limbs were downed and siding was removed at a property along Pleasant View Road. No additional damage was found to the east of this location. The damage in Fayette County was consistent with a lower-end EF0 tornado.

Hail in GREENE, OHIO
From 27-MAY-19 22:15:00 to 27-MAY-19 22:17:00 (EST-5)
Location: NEW GERMANY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public