On June 14, the front moved north over the lake and stalled just north of Erie, PA. Most of Ohio was in the warm sector with much of area getting into the low to mid 80s. Moisture remained abundant in the region as precipitable water values and dew points remained high. A shortwave from southern Michigan/northern Indiana moved east and triggered a few sub-severe thunderstorms before 3pm. However, more storms developed after 5pm and became severe in a higher-moisture, better sheared environment in northeast Ohio. Numerous areas sustained damage to trees and powerlines from thunderstorm winds, including portions of Richland, Geauga, Stark, Mahoning, and Ashtabula Counties. A tree was down on a home in Conneaut.
Several parts of Trumbull County experienced flash flooding on Sunday June 14 into the early morning hours of the 15th. The airmass was saturated with a very high rainfall efficiency. A thunderstorm complex moved into southern Trumbull County around 4 pm and lasting through 6 pm. The heaviest rain fell around 5 pm with rates estimated over 5 inches per hour according the NWS Doppler Radar. An observation by the US Army Corps of Engineers at nearby Mosquito Lake measured 3.79��� of rain for that day. The deluge resulted in evacuations of at least 4 people from Champion Township due to flooding of several inches in an apartment building. In Warren portions of Niles Road S.E. was damaged by flowing water that was too much for the city���s storm drain system. A restaurant was damaged by flood waters and a mall���s parking lot flooded resulting in flooded cars. A separate office building was damaged from flood waters entering the first floor. A second round of showers came in after 8 pm which just exasperated flood conditions despite only dropping a few hundredths of an inch of rainfall though rates were around 3.5 per hour. A few rain gauge readings from the area: USACE Mosquito Creek 3.95, USGS Leavittsburg gauge 3.29.

Thunderstorm Wind in ASHTABULA, OHIO
From 14-JUN-15 17:24:00 to 14-JUN-15 17:24:00 (EST-5)
Location: LAKEVILLE
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

The media reported numerous trees and power lines down with a tree down on a house.  Skywarn also reported several 6-12 inch diameter trees down.

Thunderstorm Wind in GEAUGA, OHIO
From 14-JUN-15 18:17:00 to 14-JUN-15 18:30:00 (EST-5)
Location: SOUTH RUSSELL
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees down from south Russell to Auburn Township. Large trees reported down along route 306. Ohio Department of Transportation also reported a weighted barricade blown down.

Thunderstorm Wind in MAHONING, OHIO
From 14-JUN-15 19:12:00 to 14-JUN-15 19:12:00 (EST-5)
Location: SEBRING
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Public

The public reported several large limbs down along East Indiana St.

Hail in MAHONING, OHIO
From 14-JUN-15 17:25:00 to 14-JUN-15 17:25:00 (EST-5)
Location: MARQUIS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported nickel size hail in Boardman Township.

Flash Flood in TRUMBULL, OHIO
From 14-JUN-15 20:00:00 to 15-JUN-15 03:00:00 (EST-5)
Location: CHAMPION
Flood cause: Heavy Rain
Property damage: 180.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Several parts of Trumbull County experienced flash flooding on Sunday June 14 into the early morning hours of the 15th. The airmass was saturated with a very high rainfall efficiency. A thunderstorm complex moved into southern Trumbull County around 4 pm and lasting through 6 pm.  The heaviest rain fell around 5 pm with rates estimated over 5 inches per hour according the NWS Doppler Radar. An observation by the US Army Corps of Engineers at nearby Mosquito Lake measured 3.79��� of rain for that day. The deluge resulted in evacuations of at least 4 people from Champion Township due to flooding of several inches in an apartment building. In Warren portions of Niles Road S.E. was damaged by flowing water that was too much for the city���s storm drain system. A restaurant was damaged by flood waters and a mall���s parking lot flooded resulting in flooded cars. A separate office building was damaged from flood waters entering the first floor. A second round of showers came in after 8 pm which just exasperated flood conditions despite only dropping a few hundredths of an inch of rainfall though rates were around 3.5 per hour. A few rain gauge readings from the area: USACE Mosquito Creek 3.95, USGS Leavittsburg gauge 3.29.

Thunderstorm Wind in RICHLAND, OHIO
From 14-JUN-15 21:20:00 to 14-JUN-15 21:20:00 (EST-5)
Location: WINDSOR
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds brought down numerous trees in Richland County.

Thunderstorm Wind in STARK, OHIO
From 14-JUN-15 16:45:00 to 14-JUN-15 16:48:00 (EST-5)
Location: ROBERTSVILLE
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Police reported a tree down on Line Street and the public reported large tree limbs down on Route 30 in Minerva City.