A Mesoscale Convective System developed along a surface wave over Illinois and Indiana during mid to late afternoon. It evolved into a squall line as it moved into the area, although there were some discrete storms that developed out ahead of the squall line. The squall line weakened as it progressed east across the area through the evening hours.

Thunderstorm Wind in GRANT, KENTUCKY
From 15-JUN-10 18:59:00 to 15-JUN-10 19:01:00 (EST-5)
Location: WILLIAMSTOWN
Magnitude: 71.00 EG
Reported by: Trained Spotter

A trained spotter estimated the wind gust.

Hail in PENDLETON, KENTUCKY
From 15-JUN-10 19:31:00 to 15-JUN-10 19:35:00 (EST-5)
Location: FALMOUTH
Magnitude: 0.75 
Reported by: Trained Spotter

Thunderstorm Wind in PENDLETON, KENTUCKY
From 15-JUN-10 19:15:00 to 15-JUN-10 19:19:00 (EST-5)
Location: FALMOUTH
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were reported down across the county.

Thunderstorm Wind in BRACKEN, KENTUCKY
From 15-JUN-10 19:50:00 to 15-JUN-10 19:54:00 (EST-5)
Location: BRADFORD
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in BRACKEN, KENTUCKY
From 15-JUN-10 19:58:00 to 15-JUN-10 20:02:00 (EST-5)
Location: STONEWALL
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: County Official

A 30 by 20 foot portion of a barn roof was removed due to damaging thunderstorm winds.

Thunderstorm Wind in MASON, KENTUCKY
From 15-JUN-10 20:20:00 to 15-JUN-10 20:22:00 (EST-5)
Location: MAYSVILLE
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

The damage surveyed consisted of a large limb on a car and a large limb on a house.  There was also major damage to one building where the high winds produced a large hold in the side of the building.  In another area of town, a tree was blown down onto a car and a power pole snapped in half and fell onto a car.  Several large limbs were blown down on the railroad tracks.  In addition, the weight room at the Mason County School football field was damaged.  All the damage surveyed in these locations indicated straight line wind damage.

Thunderstorm Wind in CAMPBELL, KENTUCKY
From 15-JUN-10 20:25:00 to 15-JUN-10 20:40:00 (EST-5)
Location: GRANTS LICK
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and tree limbs were reported down due to damaging thunderstorm winds.

Thunderstorm Wind in BOONE, KENTUCKY
From 15-JUN-10 20:11:00 to 15-JUN-10 20:15:00 (EST-5)
Location: LIMABURG
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs were reported down due to damaging thunderstorm winds.

Flash Flood in CAMPBELL, KENTUCKY
From 15-JUN-10 20:45:00 to 16-JUN-10 00:00:00 (EST-5)
Location: GRANTS LICK
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Three roads were closed due to flash flooding.

Flash Flood in BOONE, KENTUCKY
From 15-JUN-10 20:28:00 to 15-JUN-10 22:30:00 (EST-5)
Location: FLORENCE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The left lane of Interstate 75 was blocked due to high water.

Flash Flood in CAMPBELL, KENTUCKY
From 15-JUN-10 21:25:00 to 16-JUN-10 00:00:00 (EST-5)
Location: CLARYVILLE
Flood cause: Heavy Rain
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A creek was over a road due to heavy rainfall.