A cold front advanced east across western New York Monday morning and became stalled and aligned north to south over central New York and Pennsylvania shortly after noon.  Showers and thunderstorms developed along this boundary in a very unstable environment and quickly moved east. Some of these storms became severe and produced damaging winds and large hail.

Hail in ONEIDA, NEW YORK
From 17-JUL-17 11:35:00 to 17-JUL-17 11:45:00 (EST-5)
Location: HOLLAND PATENT
Magnitude: 1.75 
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A thunderstorm developed over the area and produced quarter to golf ball sized hail. This thunderstorm caused large tree limbs to fall down.

Lightning in BROOME, NEW YORK
From 17-JUL-17 14:47:00 to 17-JUL-17 14:48:00 (EST-5)
Location: GLEN CASTLE
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm developed over the area and produced lightning which struck a tree in the town of Chenango on Susan Street.

Thunderstorm Wind in CAYUGA, NEW YORK
From 17-JUL-17 11:58:00 to 17-JUL-17 12:08:00 (EST-5)
Location: MORAVIA
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over a tree which blocked the road in the vicinity of Fillmore Glenn State Park.

Thunderstorm Wind in CAYUGA, NEW YORK
From 17-JUL-17 12:02:00 to 17-JUL-17 12:12:00 (EST-5)
Location: MORAVIA
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over a tree that fell onto a road. This tree being knocked over directly caused windows to be blown out of a residential structure.

Thunderstorm Wind in CAYUGA, NEW YORK
From 17-JUL-17 12:05:00 to 17-JUL-17 12:15:00 (EST-5)
Location: MORAVIA
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked down wires which landed in the roadway.

Thunderstorm Wind in BROOME, NEW YORK
From 17-JUL-17 14:49:00 to 17-JUL-17 14:59:00 (EST-5)
Location: WEST ENDICOTT
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over trees and electical wires.

Thunderstorm Wind in BROOME, NEW YORK
From 17-JUL-17 14:50:00 to 17-JUL-17 15:00:00 (EST-5)
Location: CHENANGO FORKS
Magnitude: 50.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over a tree on Route 12 and Oak Hill Road which caused a motor vehicle accident.

Thunderstorm Wind in BROOME, NEW YORK
From 17-JUL-17 14:58:00 to 17-JUL-17 15:08:00 (EST-5)
Location: WEST ENDICOTT
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over a tree and power lines in vicinity of June Street and Birdsall Street.

Thunderstorm Wind in BROOME, NEW YORK
From 17-JUL-17 15:03:00 to 17-JUL-17 15:13:00 (EST-5)
Location: CHENANGO FORKS
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: State Official

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds and knocked over a tree and power lines on Pigeon Hill Road.

Thunderstorm Wind in BROOME, NEW YORK
From 17-JUL-17 15:30:00 to 17-JUL-17 15:40:00 (EST-5)
Location: WINDSOR
Magnitude: 65.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

A thunderstorm moved across the region and became severe. This thunderstorm produced severe winds which uprooted or snapped more than 10 trees trees on Ouaquaga Road.