A strong upper level short wave and associated jet streak moved into the region during the afternoon hours. Meanwhile, a warm front near the Ohio River focused instability along and south of the boundary where the storms developed in a favorable environment for supercells. These storms produced tornadoes, large hail and damaging straight line winds.

Thunderstorm Wind in MASON, KENTUCKY
From 07-OCT-14 14:51:00 to 07-OCT-14 14:56:00 (EST-5)
Location: WASHINGTON
Magnitude: 70.00 EG
Property damage: 46.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A damage survey revealed a swath of wind damage that originated just southwest of the Simon Kenton subdivision on the west side of U.S. Highway 62. In this subdivision, tree damage was widespread and a few homes suffered minor roof damage. There was minor tree and fence damage on the east side of U.S. highway 62 on Algonquin Drive. Wind damage was also observed on the north side of the AA Highway at the Road Ranger gas station, where several gas pumps were blown over, and adjacent empty semi-trailers were tipped over. A Taco Bell sign on the south side of the AA Highway was damaged, and another semi-trailer tipped over behind the Big Sandy Outlet. The swath of damaging winds began spreading in width at this point as it crossed Maple Leaf Road. The wider swath of damage consisted of several homes with siding and roof damage, numerous snapped or broken trees, and broken windows on both sides of Maple Leaf Road. Minor damage was also found on the east side of Maple Leaf Road into several subdivisions and along Hill City Road and Medford Heights Drive. Minimal tree damage was found along Highway 11 to the east, suggesting an end point of the more organized swath of wind damage.
It should be noted that this swath of damaging wind was also sampled by a Kentucky Mesonet site near the Maysville Community Technical College (just south of the Simon Kenton subdivision mentioned above). A 60 mph wind gust was recorded at this station between 3:50 PM and 3:55 PM.

Hail in MASON, KENTUCKY
From 07-OCT-14 14:50:00 to 07-OCT-14 14:51:00 (EST-5)
Location: SOUTH RIPLEY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail reported near the intersection of Tuckahoe Road and Minerva Tuckahoe Road.

Thunderstorm Wind in GRANT, KENTUCKY
From 07-OCT-14 14:48:00 to 07-OCT-14 14:50:00 (EST-5)
Location: CORINTH
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: Law Enforcement

One tree knocked down.

Thunderstorm Wind in MASON, KENTUCKY
From 07-OCT-14 14:55:00 to 07-OCT-14 14:55:00 (EST-5)
Location: WASHINGTON
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Thunderstorm Wind in MASON, KENTUCKY
From 07-OCT-14 14:56:00 to 07-OCT-14 14:56:00 (EST-5)
Location: MAYSVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Pea size hail was also reported.

Tornado in OWEN, KENTUCKY
From 07-OCT-14 14:39:00 to 07-OCT-14 14:45:00 (EST-5)
Location: NATLEE
Tornado F-scale: EF1
Property damage: 45.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

In Owen County, a storm survey revealed that a weak tornado touched down west of Kentucky State Route 1883 with damage to some trees. More tree damage was found along Paynes Run Road, in addition to an outbuilding that was destroyed with debris lofted into an adjacent valley. Where Paynes Run Road intersects with New Columbus Road, several homes sustained minor roof damage with windows blown out, as well as significant tree damage. The tornado continued along New Columbus Road where a porch was lifted from a home (its final resting place still is unknown) and roof damage occurred to the home itself. From here the tornado damage became intermittent along the south side of New Columbus Road and Dudley Pike, with instances of tree damage, outbuildings destroyed and minor roof damage to several homes. The last instances of tornado damage in Owen County were found along portions of Leaning Oak Road where damage consisted of peeled back roofing material on barns, many trees snapped or uprooted and roof damage to homes.
According to the survey from NWS Louisville, the storm quickly crossed into Scott County and struck North Rays Fork Road where it snapped and uprooted trees. Moving to the east-southeast, tree damage was found along South Rays Fork Road east of Stonewall. The tornado lifted just west of the Harrison County line. The only structural damage along the path was to a home near the top of a small hill close to the end of the path. The porch roof was ripped from the home and thrown over the building, with significant roof damage. Also, an above ground pool was destroyed. The damage in Scott County supports an estimated maximum wind speed of 107 mph (EF1).