A mid-level atmospheric disturbance and accompanying surface trough moved into a very warm and unstable airmass across Vermont during the late afternoon hours of the 27th. Thunderstorms developed along this boundary in the Champlain Valley of New York and intensified as they moved across Vermont.
There were numerous reports of wind damage in the form of downed trees and power lines across the state, which resulted in thousands without power. Large hail was reported in Caledonia county and lightning struck a house in Brighton (Essex county) that caused a fire.

Thunderstorm Wind in LAMOILLE, VERMONT
From 27-JUN-07 16:15:00 to 27-JUN-07 16:15:00 (EST-5)
Location: LAKE ELMORE
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Numerous large tree limbs were blown down throughout Elmore State Park.

Thunderstorm Wind in ADDISON, VERMONT
From 27-JUN-07 15:38:00 to 27-JUN-07 15:38:00 (EST-5)
Location: ORWELL
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Winds associated with thunderstorms blew trees down across Vermont State Route 22A.

Thunderstorm Wind in ADDISON, VERMONT
From 27-JUN-07 15:15:00 to 27-JUN-07 15:15:00 (EST-5)
Location: SALISBURY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees were blown down on power lines.

Thunderstorm Wind in ADDISON, VERMONT
From 27-JUN-07 15:00:00 to 27-JUN-07 15:00:00 (EST-5)
Location: FERRISBURG
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large tree limbs and power lines were blown down on Greenbush Road, as well as other local roads.

Thunderstorm Wind in WINDSOR, VERMONT
From 27-JUN-07 17:30:00 to 27-JUN-07 17:30:00 (EST-5)
Location: ROYALTON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

Several trees blown down on power lines with up to 200 people without power.

Thunderstorm Wind in WINDSOR, VERMONT
From 27-JUN-07 17:30:00 to 27-JUN-07 17:30:00 (EST-5)
Location: BETHEL
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees down on power lines due to strong winds.

Thunderstorm Wind in RUTLAND, VERMONT
From 27-JUN-07 16:15:00 to 27-JUN-07 16:15:00 (EST-5)
Location: BRANDON
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Numerous trees blown down and power lines down in Brandon.

Thunderstorm Wind in ESSEX, VERMONT
From 27-JUN-07 17:20:00 to 27-JUN-07 17:20:00 (EST-5)
Location: ISLAND POND
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several large limbs down, as well as damage to utility shed.

Thunderstorm Wind in CALEDONIA, VERMONT
From 27-JUN-07 17:15:00 to 27-JUN-07 17:15:00 (EST-5)
Location: ST JOHNSBURY
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees down on power lines.

Thunderstorm Wind in ORANGE, VERMONT
From 27-JUN-07 17:30:00 to 27-JUN-07 17:30:00 (EST-5)
Location: RANDOLPH
Magnitude: 50.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees blown down on power lines.

Lightning in ESSEX, VERMONT
From 27-JUN-07 17:30:00 to 27-JUN-07 17:30:00 (EST-5)
Location: BRIGHTON
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lightning struck a house on Derby St. and caused a fire.

Thunderstorm Wind in RUTLAND, VERMONT
From 27-JUN-07 16:15:00 to 27-JUN-07 16:15:00 (EST-5)
Location: RUTLAND
Magnitude: 55.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Utility Company

Numerous trees blown down and power lines down in Rutland.

Thunderstorm Wind in ADDISON, VERMONT
From 27-JUN-07 16:50:00 to 27-JUN-07 16:50:00 (EST-5)
Location: MIDDLEBURY
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees down on power lines on Walnut St. with nearly 2000 customers without power.

Thunderstorm Wind in CALEDONIA, VERMONT
From 27-JUN-07 16:50:00 to 27-JUN-07 16:50:00 (EST-5)
Location: WALDEN
Magnitude: 56.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees down and 30 foot flag pole snapped. Winds estimated at 60 to 70 mph.

Thunderstorm Wind in WINDSOR, VERMONT
From 27-JUN-07 16:54:00 to 27-JUN-07 16:54:00 (EST-5)
Location: BETHEL
Magnitude: 50.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A few trees down along Interstate 89 near Exit 3.

Hail in CALEDONIA, VERMONT
From 27-JUN-07 17:10:00 to 27-JUN-07 17:10:00 (EST-5)
Location: LYNDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch diameter size hail reported by trained spotter.

Hail in CALEDONIA, VERMONT
From 27-JUN-07 17:15:00 to 27-JUN-07 17:15:00 (EST-5)
Location: EAST BURKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

One inch diameter sized hail reported as well as a tree blown down in East Burke.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 27-JUN-07 15:00:00 to 27-JUN-07 15:00:00 (EST-5)
Location: CHARLOTTE
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees down on Greenbush Rd., Charlotte-Hinesburg Rd., Spear St. and Higbee  Rd.

Thunderstorm Wind in CALEDONIA, VERMONT
From 27-JUN-07 16:55:00 to 27-JUN-07 16:55:00 (EST-5)
Location: NORTH DANVILLE
Magnitude: 55.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Numerous trees blown down near State Routes 2, 15 and other local roads.