On the morning of Saturday, August 13th, a warm front lifted northward across the region. This allowed a very warm and excessively humid air mass to be in place over the area.
Late in the day, a surface cold front was approaching the area from the west. An organized line of thunderstorms moved from west to east across all of eastern Upstate New York and crossed western Massachusetts during the evening hours. These storms produced gusty winds, which caused damage to some trees and power lines.
In addition to the gusty winds, the thunderstorms also produced a significant amount of cloud-to-ground lightning. Numerous power outages were reported across the region as a result of the thunderstorms.
Thunderstorms ended with the passage of the cold front during the overnight hours.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 20:15:00 to 13-AUG-16 20:15:00 (EST-5)
Location: PITTSFIELD
Magnitude: 50.00 EG
Reported by: Amateur Radio

Trees were reported down in Pittsfield due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:45:00 to 13-AUG-16 19:45:00 (EST-5)
Location: SOUTH EGREMONT
Magnitude: 50.00 EG
Reported by: Amateur Radio

A tree was reported down across Route 23 in North Egremont due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:58:00 to 13-AUG-16 19:58:00 (EST-5)
Location: HOUSATONIC
Magnitude: 50.00 EG
Reported by: Amateur Radio

A tree was downed onto a house on Park Street in the village of Housatonic in the town of Great Barrington due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:55:00 to 13-AUG-16 19:55:00 (EST-5)
Location: GLENDALE
Magnitude: 50.00 EG
Reported by: Social Media

A tree was reported down on Route 7 in the Glendale section of the town of Stockbridge.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:50:00 to 13-AUG-16 19:50:00 (EST-5)
Location: SOUTH EGREMONT
Magnitude: 50.00 EG
Reported by: Amateur Radio

Wires were reported down on Route 41 in Sheffield due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 20:15:00 to 13-AUG-16 20:15:00 (EST-5)
Location: CHESHIRE HARBOR
Magnitude: 50.00 EG
Reported by: Amateur Radio

A telephone pole and wires were downed on Bellevue Avenue in North Adams due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:57:00 to 13-AUG-16 19:57:00 (EST-5)
Location: VAN DEUSENVILLE
Magnitude: 50.00 EG
Reported by: Amateur Radio

A tree was downed and blocking part of Route 41 in the Van Deusenville section of the town of Great Barrington due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 20:12:00 to 13-AUG-16 20:12:00 (EST-5)
Location: CHESHIRE
Magnitude: 50.00 EG
Reported by: Amateur Radio

A tree was downed and blocking Route 8 in Cheshire as a result of thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:57:00 to 13-AUG-16 19:57:00 (EST-5)
Location: VAN DEUSENVILLE
Magnitude: 50.00 EG
Reported by: Amateur Radio

Trees were reported down on Long Pond Road in Great Barrington due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:56:00 to 13-AUG-16 19:56:00 (EST-5)
Location: ALFORD
Magnitude: 50.00 EG
Reported by: Amateur Radio

Trees and wires were reported down on North Egremont Road in Alford due to thunderstorm winds.

Thunderstorm Wind in BERKSHIRE, MASSACHUSETTS
From 13-AUG-16 19:50:00 to 13-AUG-16 19:50:00 (EST-5)
Location: SOUTH EGREMONT
Magnitude: 50.00 EG
Reported by: Amateur Radio

Multiple trees and wires were reported down in South Egremont due to thunderstorm winds.