An area of low pressure located in Ontario, Canada and associated occluded frontal system passed through the area during the afternoon and evening hours on August 15, 2010.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:11:00 to 15-AUG-10 17:11:00 (EST-5)
Location: ELMORE
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds downed a three foot diameter tree onto Toledo Street.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:25:00 to 15-AUG-10 17:25:00 (EST-5)
Location: OAK HARBOR
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds downed several large limbs. A railroad crossing bar was also snapped off by the high winds.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:11:00 to 15-AUG-10 17:11:00 (EST-5)
Location: ELMORE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds downed a couple of 12-15 diameter tree limbs.

Thunderstorm Wind in LUCAS, OHIO
From 15-AUG-10 16:47:00 to 15-AUG-10 16:47:00 (EST-5)
Location: TOLEDO METCALF FLD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A 60 mph thunderstorm wind gust was measured at Metcalf Field.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:31:00 to 15-AUG-10 17:31:00 (EST-5)
Location: OAK HARBOR
Magnitude: 53.00 MG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A thunderstorm wind gust of 61 mph was measured. Thunderstorm winds downed small tree limbs at the time of the measured gust.

Hail in OTTAWA, OHIO
From 15-AUG-10 17:04:00 to 15-AUG-10 17:04:00 (EST-5)
Location: GENOA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny sized hail was reported during this thunderstorm.

Hail in WOOD, OHIO
From 15-AUG-10 16:34:00 to 15-AUG-10 16:34:00 (EST-5)
Location: PERRYSBURG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny sized hail occurred with this thunderstorm.

Hail in WOOD, OHIO
From 15-AUG-10 16:53:00 to 15-AUG-10 16:53:00 (EST-5)
Location: MILLBURY
Magnitude: 0.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Penny sized hail was reported during this thunderstorm.

Hail in OTTAWA, OHIO
From 15-AUG-10 17:11:00 to 15-AUG-10 17:11:00 (EST-5)
Location: ELMORE
Magnitude: 0.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny sized hail was reported with this thunderstorm.

Hail in OTTAWA, OHIO
From 15-AUG-10 16:53:00 to 15-AUG-10 16:53:00 (EST-5)
Location: GENOA
Magnitude: 1.25 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Half dollar sized hail was observed.

Hail in OTTAWA, OHIO
From 15-AUG-10 17:04:00 to 15-AUG-10 17:04:00 (EST-5)
Location: GENOA
Magnitude: 1.00 
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter sized hail was measured during this thunderstorm.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:11:00 to 15-AUG-10 17:11:00 (EST-5)
Location: ELMORE
Magnitude: 50.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds downed numerous large tree limbs onto power lines. Widespread power outages resulted in the eastern portion of Elmore.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:25:00 to 15-AUG-10 17:25:00 (EST-5)
Location: OAK HARBOR
Magnitude: 50.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds downed numerous large trees and power lines. Two trees measuring four feet in diameter and thirty feet tall were uprooted. A vehicle was damaged by one of the trees.

Thunderstorm Wind in OTTAWA, OHIO
From 15-AUG-10 17:25:00 to 15-AUG-10 17:25:00 (EST-5)
Location: OAK HARBOR
Magnitude: 50.00 EG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Thunderstorm winds uprooted a tree measuring four feet in diameter and 70 feet in height. The tree fell onto a house and caused moderate damage.

Thunderstorm Wind in LUCAS, OHIO
From 15-AUG-10 16:30:00 to 15-AUG-10 16:35:00 (EST-5)
Location: MONCLOVA
Magnitude: 50.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Thunderstorm downburst winds estimated to be as much as 75 mph caused considerable damage in the Monclova area.  A damage path nearly three miles in length was observed.  Hundreds of trees were downed along the damage path.  A couple homes were also damaged.