A powerful storm system across the Great Lakes on the afternoon of December 11th moved northeast across Ontario and Quebec provinces in Canada during the night. A very powerful jet structure with winds in excess of 100 knots at 5000 feet moved across the eastern Great Lakes, northern NY and eventually VT.
The associated cold front was the demarcation line of mixing these strong winds to the surface. These strong winds in excess of 40-50 mph entered VT around mid-evening and gradually decreased into the 30-40 mph range during the early morning hours of the 12th.
The strongest winds were in northern sections and along the eastern slopes of the Green Mountains. Statewide approximately 15,000 customer power outages.

Strong Wind in ORANGE, VERMONT
From 11-DEC-21 22:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs and small trees downed by strong winds, falling on utility lines with numerous wind reports in the lower to mid 40 mph range.

Strong Wind in WINDSOR, VERMONT
From 11-DEC-21 22:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 35.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated  tree limbs and small trees downed by strong winds, falling on utility lines with numerous wind around 40 mph but locally higher likely based on damage.

Strong Wind in ESSEX, VERMONT
From 11-DEC-21 22:00:00 to 12-DEC-21 03:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs and small trees downed by strong winds, falling on utility lines with numerous wind reports in the lower to mid 40 mph range.

Strong Wind in WESTERN FRANKLIN, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, measured in the mid-upper 40s but estimated locally in excess of 50 mph.

Strong Wind in EASTERN FRANKLIN, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, measured in the mid-upper 40s but estimated locally in excess of 50 mph.

Strong Wind in WESTERN CHITTENDEN, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, measured in the mid-upper 40s but estimated locally in excess of 50 mph.

Strong Wind in EASTERN CHITTENDEN, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 42.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, measured in the mid-upper 40s but estimated locally in excess of 50 mph.

Strong Wind in WESTERN ADDISON, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs downed by strong winds.

Strong Wind in EASTERN ADDISON, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs downed by strong winds.

Strong Wind in GRAND ISLE, VERMONT
From 11-DEC-21 20:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 43.00 MG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, measured in the mid-upper 40s but estimated locally in excess of 50 mph.

Strong Wind in EASTERN RUTLAND, VERMONT
From 11-DEC-21 21:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 45.00 MG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, falling on utility lines, especially east of the Green Mountains in downslope winds.

Strong Wind in WESTERN RUTLAND, VERMONT
From 11-DEC-21 21:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs and small trees downed by strong winds, falling on utility lines.

Strong Wind in LAMOILLE, VERMONT
From 11-DEC-21 21:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered tree limbs and small trees downed by strong winds, falling on utility lines, especially closest to the eastern slopes of the Green Mountains.

Strong Wind in ORLEANS, VERMONT
From 11-DEC-21 21:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 46.00 MG
Property damage: 35.00K
Crop damage: 0.00K
Reported by: Utility Company

Scattered to numerous tree limbs and small trees downed by strong winds, falling on utility lines, especially closest to the eastern slopes of the Green Mountains in communities like Jay, Westmore and Lowell where measured wind gusts of 48 to 53 mph was observed.

Strong Wind in WASHINGTON, VERMONT
From 11-DEC-21 22:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs and small trees downed by strong winds, falling on utility lines with numerous wind reports in the lower to mid 40 mph range.

Strong Wind in CALEDONIA, VERMONT
From 11-DEC-21 22:00:00 to 12-DEC-21 02:00:00 (EST-5)
Magnitude: 40.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Isolated to scattered tree limbs and small trees downed by strong winds, falling on utility lines with numerous wind reports in the lower to mid 40 mph range.