An area of low pressure moved northeast across southern Ontario and Quebec Canada, bringing numerous showers and thunderstorms across upstate New York. Some of the storms became severe, producing damaging winds and large hail.

Thunderstorm Wind in CORTLAND, NEW YORK
From 31-MAY-08 17:15:00 to 31-MAY-08 17:15:00 (EST-5)
Location: CORTLAND
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Three trees and some wires were knocked down in the city of Cortland.

Thunderstorm Wind in TIOGA, NEW YORK
From 31-MAY-08 13:32:00 to 31-MAY-08 13:32:00 (EST-5)
Location: RICHFORD
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 31-MAY-08 17:00:00 to 31-MAY-08 17:00:00 (EST-5)
Location: DAMS CORNERS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

There were also reports of nickel size hail with this storm.

Hail in TOMPKINS, NEW YORK
From 31-MAY-08 17:01:00 to 31-MAY-08 17:01:00 (EST-5)
Location: WEST GROTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MADISON, NEW YORK
From 31-MAY-08 17:05:00 to 31-MAY-08 17:05:00 (EST-5)
Location: ONEIDA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 31-MAY-08 17:12:00 to 31-MAY-08 17:12:00 (EST-5)
Location: VERNON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 31-MAY-08 17:14:00 to 31-MAY-08 17:14:00 (EST-5)
Location: NEW HARTFORD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in ONEIDA, NEW YORK
From 31-MAY-08 17:25:00 to 31-MAY-08 17:25:00 (EST-5)
Location: CLINTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in BROOME, NEW YORK
From 31-MAY-08 14:00:00 to 31-MAY-08 14:00:00 (EST-5)
Location: TRIANGLE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and wires were blown down.

Thunderstorm Wind in CAYUGA, NEW YORK
From 31-MAY-08 17:00:00 to 31-MAY-08 17:00:00 (EST-5)
Location: LOCKE
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees were blown down.

Thunderstorm Wind in CAYUGA, NEW YORK
From 31-MAY-08 17:11:00 to 31-MAY-08 17:11:00 (EST-5)
Location: SCIPIO CENTER
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and wires were blown down.

Hail in BROOME, NEW YORK
From 31-MAY-08 13:53:00 to 31-MAY-08 13:53:00 (EST-5)
Location: WHITNEY PT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in ONEIDA, NEW YORK
From 31-MAY-08 17:00:00 to 31-MAY-08 17:05:00 (EST-5)
Location: VERNON
Magnitude: 1.25 
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Nickel to quarter size hail was also reported with this storm. The storm also knocked down small tree branches.

Thunderstorm Wind in BROOME, NEW YORK
From 31-MAY-08 13:50:00 to 31-MAY-08 13:50:00 (EST-5)
Location: NANTICOKE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Multiple trees and power lines were blown down closing several roads.