Thunderstorms developed ahead of an approaching cold front.  The first round of storms developed across southern Ontario just west of the St. Lawrence River and moved east across Jefferson and northern Lewis counties producing fairly widespread wind damage. A second line formed near the Buffalo area. This line produced a few sporadic wind damage reports near Buffalo. As this line progressed southeast of Buffalo, the storms intensified producing a corridor of widespread damage. Outside of these two lines, a few more isolated severe storms developed and produced wind damage. Damage consisted mostly of downed trees and power lines. In some cases roads were blocked and closed by downed trees. In Delevan, a large tree damaged two trailers. In Shaw Bay, Oswego County, a dock was flipped over by the thunderstorm winds. Several of the storms produced half inch to three quarter inch hail near Clarence, Orchard Park, Brighton, Oswego, and Chaffee. An isolated storm near Silver Springs, Wyoming county, producing one inch hail.

Hail in ERIE, NEW YORK
From 20-JUN-16 20:44:00 to 20-JUN-16 20:44:00 (EST-5)
Location: EAST AMHERST
Magnitude: 0.88 
Reported by: Trained Spotter

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 20:51:00 to 20-JUN-16 20:51:00 (EST-5)
Location: BROWNVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported trees down by thunderstorm winds.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 20:54:00 to 20-JUN-16 20:54:00 (EST-5)
Location: FARGO
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds across Route 3.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 20-JUN-16 21:48:00 to 20-JUN-16 21:48:00 (EST-5)
Location: ROSS CORNERS
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds in Groveland.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 21:49:00 to 20-JUN-16 21:49:00 (EST-5)
Location: EDEN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds on Sisson Highway.

Thunderstorm Wind in OSWEGO, NEW YORK
From 20-JUN-16 21:50:00 to 20-JUN-16 21:50:00 (EST-5)
Location: REDFIELD
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

A social media post reported trees down by thunderstorm winds in Redfield.

Thunderstorm Wind in LEWIS, NEW YORK
From 20-JUN-16 20:56:00 to 20-JUN-16 20:56:00 (EST-5)
Location: HARRISVILLE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 21:00:00 to 20-JUN-16 21:00:00 (EST-5)
Location: EAST WATERTOWN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds across Monroe Avenue.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 21:02:00 to 20-JUN-16 21:02:00 (EST-5)
Location: WATERTOWN CENTER
Magnitude: 55.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported a power pole down by thunderstorm winds on Fairmont Avenue.

Thunderstorm Wind in OSWEGO, NEW YORK
From 20-JUN-16 21:56:00 to 20-JUN-16 21:56:00 (EST-5)
Location: OSWEGO CENTER
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds blocking a roadway.

Thunderstorm Wind in OSWEGO, NEW YORK
From 20-JUN-16 21:57:00 to 20-JUN-16 21:57:00 (EST-5)
Location: NEW HAVEN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds blocking the roadway.

Hail in WYOMING, NEW YORK
From 20-JUN-16 21:58:00 to 20-JUN-16 21:58:00 (EST-5)
Location: SILVER SPGS
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 21:04:00 to 20-JUN-16 21:04:00 (EST-5)
Location: ALDEN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds.

Hail in ERIE, NEW YORK
From 20-JUN-16 21:11:00 to 20-JUN-16 21:11:00 (EST-5)
Location: ELLICOTT
Magnitude: 0.88 
Reported by: Trained Spotter

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:14:00 to 20-JUN-16 21:14:00 (EST-5)
Location: BENNINGTON
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:58:00 to 20-JUN-16 21:58:00 (EST-5)
Location: BLISS
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 22:06:00 to 20-JUN-16 22:06:00 (EST-5)
Location: PIKE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 22:07:00 to 20-JUN-16 22:07:00 (EST-5)
Location: CHAFFEE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Social Media

A social media post showed trees down by thunderstorm winds on Savage Road.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 21:15:00 to 20-JUN-16 21:15:00 (EST-5)
Location: EAST AURORA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Employee

Trees were downed by thunderstorm winds on Olean Road.

Hail in MONROE, NEW YORK
From 20-JUN-16 21:16:00 to 20-JUN-16 21:16:00 (EST-5)
Location: BRIGHTON
Magnitude: 0.75 
Reported by: Public

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 21:21:00 to 20-JUN-16 21:21:00 (EST-5)
Location: WALES HOLLOW
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds on Strykersville Road.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 20-JUN-16 22:11:00 to 20-JUN-16 22:11:00 (EST-5)
Location: SPRINGWATER
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds.

Hail in ERIE, NEW YORK
From 20-JUN-16 22:14:00 to 20-JUN-16 22:14:00 (EST-5)
Location: CHAFFEE
Magnitude: 0.88 
Reported by: Emergency Manager

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 22:14:00 to 20-JUN-16 22:14:00 (EST-5)
Location: CHAFFEE
Magnitude: 55.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Emergency management reported wires and power poles down by thunderstorm winds near Chaffee.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 20:34:00 to 20-JUN-16 20:34:00 (EST-5)
Location: THERESA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds across Schell Road.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:28:00 to 20-JUN-16 21:28:00 (EST-5)
Location: ORANGEVILLE CENTER
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:29:00 to 20-JUN-16 21:29:00 (EST-5)
Location: STRYKERSVILLE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:29:00 to 20-JUN-16 21:29:00 (EST-5)
Location: SHELDON CORNERS
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 22:16:00 to 20-JUN-16 22:16:00 (EST-5)
Location: GAINESVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds.

Thunderstorm Wind in WAYNE, NEW YORK
From 20-JUN-16 22:22:00 to 20-JUN-16 22:22:00 (EST-5)
Location: CLYDE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and power lines down by thunderstorm winds.

Thunderstorm Wind in LIVINGSTON, NEW YORK
From 20-JUN-16 22:25:00 to 20-JUN-16 22:25:00 (EST-5)
Location: NUNDA
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 20:20:00 to 20-JUN-16 20:20:00 (EST-5)
Location: ST LAWRENCE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds across County Routes 9 and 4.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 20:40:00 to 20-JUN-16 20:40:00 (EST-5)
Location: EVANS MILLS
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported wires down by thunderstorm winds across Route 11 and Waddington.

Thunderstorm Wind in ERIE, NEW YORK
From 20-JUN-16 20:41:00 to 20-JUN-16 20:41:00 (EST-5)
Location: CLARENCE CENTER
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds on Clarence Center Road.

Thunderstorm Wind in LEWIS, NEW YORK
From 20-JUN-16 21:30:00 to 20-JUN-16 21:30:00 (EST-5)
Location: COPENHAGEN
Magnitude: 50.00 EG
Property damage: 12.00K
Crop damage: 0.00K
Reported by: Social Media

A social media post reported multiple trees down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:34:00 to 20-JUN-16 21:34:00 (EST-5)
Location: WARSAW
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in OSWEGO, NEW YORK
From 20-JUN-16 21:37:00 to 20-JUN-16 21:37:00 (EST-5)
Location: PARISH
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds blocking a road.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUN-16 22:28:00 to 20-JUN-16 22:28:00 (EST-5)
Location: YORKSHIRE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported numerous trees and lines down by thunderstorm winds.

Thunderstorm Wind in CATTARAUGUS, NEW YORK
From 20-JUN-16 22:28:00 to 20-JUN-16 22:28:00 (EST-5)
Location: DELEVAN
Magnitude: 50.00 EG
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds damaging two trailers.

Thunderstorm Wind in CAYUGA, NEW YORK
From 20-JUN-16 22:39:00 to 20-JUN-16 22:39:00 (EST-5)
Location: CATO
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and power lines down by thunderstorm winds.

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 21:41:00 to 20-JUN-16 21:41:00 (EST-5)
Location: JAVA CENTER
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Trees were snapped and downed by thunderstorm winds in Bennington.

Hail in MONROE, NEW YORK
From 20-JUN-16 21:45:00 to 20-JUN-16 21:45:00 (EST-5)
Location: BRIGHTON
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in OSWEGO, NEW YORK
From 20-JUN-16 21:46:00 to 20-JUN-16 21:46:00 (EST-5)
Location: OSWEGO
Magnitude: 0.75 
Reported by: Trained Spotter

Thunderstorm Wind in WYOMING, NEW YORK
From 20-JUN-16 22:31:00 to 20-JUN-16 22:31:00 (EST-5)
Location: EAGLE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in OSWEGO, NEW YORK
From 20-JUN-16 22:43:00 to 20-JUN-16 22:43:00 (EST-5)
Location: WEST MONROE
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast news showed a secured dock flipped over by thunderstorm winds in Shaw Bay.

Thunderstorm Wind in ALLEGANY, NEW YORK
From 20-JUN-16 22:50:00 to 20-JUN-16 22:50:00 (EST-5)
Location: HOUGHTON COLLEGE ARP
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in ALLEGANY, NEW YORK
From 20-JUN-16 22:55:00 to 20-JUN-16 22:55:00 (EST-5)
Location: CANEADEA
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported numerous trees and wires down by thunderstorm winds.

Thunderstorm Wind in ALLEGANY, NEW YORK
From 20-JUN-16 23:20:00 to 20-JUN-16 23:20:00 (EST-5)
Location: SCHOLES
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees and wires down by thunderstorm winds.

Thunderstorm Wind in JEFFERSON, NEW YORK
From 20-JUN-16 19:15:00 to 20-JUN-16 19:15:00 (EST-5)
Location: PT VIVIAN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported trees down by thunderstorm winds blocking Bailey Settlement Rd.