A low pressure system over the upper Midwest moved across the Great Lakes on June 18.  Ahead of the low pressure system, a warm front moved over the area early on June 18 bringing temperatures into the mid-80s that afternoon.  A cold front trailed the low pressure system and moved across the Great Lakes through the afternoon.  Ahead of the cold front, several severe thunderstorms developed, including one storm that produced and EF-1 tornado in northern Stark County.  Additional thundestorms dropped very heavy rainfall across the area, especially in the Akron Metro area, as rainfall flooded the Central Interchange and many roadways south of the city.
National Weather Service Survey Team decided an EF-1 tornado touched down in Uniontown near the Uniontown Fire Department and traveled east southeast along an intermittent path for approximately 9 miles through Lake Township. Most of the damage observed was to trees that were uprooted or snapped part of the way up of the ground.  A newly constructed dairy barn in Marlboro township near State Route 44 and St. Peters Church Road had significant roof damage.  Minor roof and siding damage was observed along the tornado path.  A swath of straight line wind damage occurred south of the tornado track from the north side of Canton to Louisville.  Numerous trees and power poles were brought down, with at least one tree falling on a home.  Several people were trapped in an SUV due to the downed power poles.

Thunderstorm Wind in WAYNE, OHIO
From 18-JUN-15 17:55:00 to 18-JUN-15 17:55:00 (EST-5)
Location: MARSHALLVILLE
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained weather spotter reported thunderstorm winds brought down a 1 to 2 foot diameter tree near Route 57 and Pleasant Home Road.  Additional reports were received via social media of several large tree limbs down in Marshallville.

Tornado in STARK, OHIO
From 18-JUN-15 18:07:00 to 18-JUN-15 18:18:00 (EST-5)
Location: UNIONTOWN
Tornado F-scale: EF1
Property damage: 110.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

An EF-1 tornado touched down in Uniontown near the Uniontown Fire Department and traveled east southeast along an intermittent path for approximately 9 miles through Lake Township. Most of the damage observed was to trees that were uprooted or snapped part of the way up of the ground.  A newly constructed dairy barn in Marlboro township near State Route 44 and St. Peters Church Road had significant roof damage.  Minor roof and siding damage was observed along the tornado path.

Thunderstorm Wind in KNOX, OHIO
From 18-JUN-15 16:15:00 to 18-JUN-15 16:20:00 (EST-5)
Location: MONROE MILLS
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: State Official

Thunderstorm winds brought down a tree on CR 95 near Apple Valley Lake in Howard and near Kenyon College in Gambier.

Thunderstorm Wind in STARK, OHIO
From 18-JUN-15 18:15:00 to 18-JUN-15 18:25:00 (EST-5)
Location: AVONDALE
Magnitude: 50.00 EG
Property damage: 32.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A swath of wind damage occurred from Plain Township and northern Canton, extending southeast to Louisville.  A trained weather spotter reported 10 power poles were brought down by thunderstorm winds on 44th Street between Cleveland and Market Streets.  Multiple people were trapped in an SUV due to the downed poles.  Trees were down in the area of Interstate 77 and Fulton.  One 7 inch diameter tree was down on a house.  Additional power lines were reported down in Louisville near Route 44 and North Columbus Street.

Thunderstorm Wind in ERIE, OHIO
From 18-JUN-15 16:30:00 to 18-JUN-15 16:30:00 (EST-5)
Location: CASTALIA
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: State Official

The Erie County Sheriff reported a large tree limb fell onto a mobile home northwest of Castalia.

Thunderstorm Wind in SUMMIT, OHIO
From 18-JUN-15 17:58:00 to 18-JUN-15 18:00:00 (EST-5)
Location: PORTAGE LAKES
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained weather spotter reported 6-8 trees down around Manchester Road south of Akron.  Several 90 foot trees were also brought down by thunderstorm winds in northwest portions of Green.  Extremely heavy rainfall accompanied the storms.

Thunderstorm Wind in MORROW, OHIO
From 18-JUN-15 18:25:00 to 18-JUN-15 18:25:00 (EST-5)
Location: MARENGO
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: State Official

The Sheriff's Office reported several limbs down in Morrow County and power lines down on State Route 229 in Marengo.

Thunderstorm Wind in MARION, OHIO
From 18-JUN-15 17:57:00 to 18-JUN-15 18:02:00 (EST-5)
Location: MARION
Magnitude: 51.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: ASOS

The ASOS at the Marion Airport measured a 51 knot wind gust from a thunderstorm.  Several trees were also blown down in Caledonia in eastern Marion County.