A rapidly intensifying area of low pressure moved from the eastern Great Lakes across Quebec province Canada during the afternoon and evening hours of September 8th. A tight pressure gradient created strong surface southerly winds of 20 to 30 mph with frequent gusts in excess of 40 mph across the region. In addition these strong winds delivered an abnormally warm and unstable air mass ahead of the surface low and cold front. As the cold front moved across New York during the afternoon, a squall line of severe thunderstorms developed and pushed east into Vermont.
There was isolated minor wind damage in the form of large tree branches or small trees prior to any thunderstorms. Wind damage associated with thunderstorms was more widespread and significant.

Thunderstorm Wind in RUTLAND, VERMONT
From 08-SEP-12 16:25:00 to 08-SEP-12 16:25:00 (EST-5)
Location: EAST WALLINGFORD
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Numerous trees down on houses, camps and vehicles in Wallingford and Clarendon.

Thunderstorm Wind in WASHINGTON, VERMONT
From 08-SEP-12 16:25:00 to 08-SEP-12 16:25:00 (EST-5)
Location: BERLIN
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Route 12 closed due to downed trees and power lines.

Thunderstorm Wind in WASHINGTON, VERMONT
From 08-SEP-12 16:40:00 to 08-SEP-12 16:40:00 (EST-5)
Location: EAST CALAIS
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees and limbs down along Route 14.

Thunderstorm Wind in WASHINGTON, VERMONT
From 08-SEP-12 16:42:00 to 08-SEP-12 16:42:00 (EST-5)
Location: FAIRMONT ARPT
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees and power lines down.

Thunderstorm Wind in WINDSOR, VERMONT
From 08-SEP-12 16:42:00 to 08-SEP-12 16:44:00 (EST-5)
Location: ROYALTON
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down.

Thunderstorm Wind in WINDSOR, VERMONT
From 08-SEP-12 17:12:00 to 08-SEP-12 17:12:00 (EST-5)
Location: SPRINGFIELD
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Several trees down along Route 5 in Springfield.

Thunderstorm Wind in CALEDONIA, VERMONT
From 08-SEP-12 17:36:00 to 08-SEP-12 17:36:00 (EST-5)
Location: LOWER WATERFORD
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees down on Welsh and neighboring streets.

Thunderstorm Wind in CALEDONIA, VERMONT
From 08-SEP-12 17:30:00 to 08-SEP-12 17:30:00 (EST-5)
Location: BROWN ARPT
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees down along Industrial parkway and several locations, including St. Johnsbury Country Club.

Thunderstorm Wind in FRANKLIN, VERMONT
From 08-SEP-12 15:30:00 to 08-SEP-12 15:30:00 (EST-5)
Location: FAIRFAX
Magnitude: 50.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down across Fairfax and neighboring locales.

Thunderstorm Wind in ORLEANS, VERMONT
From 08-SEP-12 17:03:00 to 08-SEP-12 17:03:00 (EST-5)
Location: BARTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Large tree and several smaller trees downed by thunderstorm winds.

Thunderstorm Wind in FRANKLIN, VERMONT
From 08-SEP-12 15:35:00 to 08-SEP-12 15:35:00 (EST-5)
Location: SWANTON
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and wires down, as well as structural damage throughout Swanton, especially southern side and along Routes 7, 207 and 105.

Thunderstorm Wind in ADDISON, VERMONT
From 08-SEP-12 15:25:00 to 08-SEP-12 15:25:00 (EST-5)
Location: LAKE DUNMORE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees down along Plain road and neighboring roads.

Thunderstorm Wind in GRAND ISLE, VERMONT
From 08-SEP-12 15:25:00 to 08-SEP-12 15:27:00 (EST-5)
Location: NORTH HERO
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees and wires down.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 08-SEP-12 15:39:00 to 08-SEP-12 15:40:00 (EST-5)
Location: CHECKERBERRY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Several trees blown down.

Thunderstorm Wind in FRANKLIN, VERMONT
From 08-SEP-12 15:43:00 to 08-SEP-12 15:45:00 (EST-5)
Location: ST ALBANS
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Multiple trees and wires down with light structural damage and damage to vehicles due to fallen trees.

Thunderstorm Wind in FRANKLIN, VERMONT
From 08-SEP-12 15:49:00 to 08-SEP-12 15:50:00 (EST-5)
Location: SHELDON SPGS
Magnitude: 60.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Power lines and trees down in Sheldon and along Route 105.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 08-SEP-12 16:00:00 to 08-SEP-12 16:00:00 (EST-5)
Location: BOLTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: NWS Employee

Tree and power lines down on Bolton Notch road.

Thunderstorm Wind in WASHINGTON, VERMONT
From 08-SEP-12 16:00:00 to 08-SEP-12 16:00:00 (EST-5)
Location: MORETOWN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several trees downed by thunderstorm winds.

Thunderstorm Wind in WASHINGTON, VERMONT
From 08-SEP-12 16:03:00 to 08-SEP-12 16:03:00 (EST-5)
Location: IRASVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Several trees downon power lines along Route 100 in Waitsfield near Small Dog Electronics.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 08-SEP-12 15:27:00 to 08-SEP-12 15:29:00 (EST-5)
Location: CHAMPLAIN ARPT
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Employee

Twelve inch diameter tree as well as other trees and limbs blown down along the shores of Malletts Bay.

Thunderstorm Wind in ADDISON, VERMONT
From 08-SEP-12 15:28:00 to 08-SEP-12 15:30:00 (EST-5)
Location: MIDDLEBURY ARPT
Magnitude: 55.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and wires down on Foote street and neighboring roads, including Routes 7, 116 and 125.

Thunderstorm Wind in ORANGE, VERMONT
From 08-SEP-12 16:24:00 to 08-SEP-12 16:24:00 (EST-5)
Location: RANDOLPH
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down by thunderstorm winds.