Scattered thunderstorms developed in a moderately unstable airmass across the Champlain Valley of New York during the afternoon of the 16th. One thunderstorm developed in a favorable, highly sheared wind environment which eventually intensified into a supercell thunderstorm in Clinton county, NY. This supercell then proceeded to travel into Vermont affecting numerous communities between Grand Isle (Grand Isle county) and Concord (Essex county). Significant straight-line wind damage (estimated between 60 and 80 mph) in the form of snapped, uprooted and downed trees, downed power lines and some structural damage occurred in Grand Isle, Georgia (Franklin county), Westford (Chittenden county) and Hardwick (Caledonia county).
Also, there were several thunderstorms, including a supercell that developed in the northern Hudson Valley of New York and moved across Rutland and Windsor counties in southern Vermont.  Significant straight-line wind damage (estimated between 60 and 80 mph) in the form of snapped, uprooted and downed trees, downed power lines and some structural damage occurred as well in Rutland (Rutland county) and surrounding communities.

Thunderstorm Wind in ESSEX, VERMONT
From 16-AUG-07 16:25:00 to 16-AUG-07 16:25:00 (EST-5)
Location: CONCORD
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Post Office

Trees down on power lines along Route 2 and no power between Concord and Lunenburg.

Thunderstorm Wind in RUTLAND, VERMONT
From 16-AUG-07 16:45:00 to 16-AUG-07 16:45:00 (EST-5)
Location: HUBBARDTON
Magnitude: 60.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down across Hubbardton with trees on houses, porches and vehicles.

Thunderstorm Wind in RUTLAND, VERMONT
From 16-AUG-07 16:35:00 to 16-AUG-07 16:35:00 (EST-5)
Location: BENSON
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down in Benson.

Thunderstorm Wind in RUTLAND, VERMONT
From 16-AUG-07 16:55:00 to 16-AUG-07 16:55:00 (EST-5)
Location: PITTSFORD
Magnitude: 60.00 EG
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down with some structural damage.

Thunderstorm Wind in WINDSOR, VERMONT
From 16-AUG-07 17:30:00 to 16-AUG-07 17:30:00 (EST-5)
Location: BRIDGEWATER CORNERS
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Trees down.

Thunderstorm Wind in LAMOILLE, VERMONT
From 16-AUG-07 15:20:00 to 16-AUG-07 15:20:00 (EST-5)
Location: CAMBRIDGE
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees down along Route 15 and Bryce road in the town of Cambridge.

Thunderstorm Wind in LAMOILLE, VERMONT
From 16-AUG-07 15:30:00 to 16-AUG-07 15:30:00 (EST-5)
Location: JEFFERSONVILLE
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees down on Route 108.

Thunderstorm Wind in WINDSOR, VERMONT
From 16-AUG-07 17:45:00 to 16-AUG-07 17:45:00 (EST-5)
Location: HARTFORD
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Tree and several branches down along Route 14 in Hartford.

Thunderstorm Wind in ADDISON, VERMONT
From 16-AUG-07 16:45:00 to 16-AUG-07 16:45:00 (EST-5)
Location: RIPTON
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees on power lines near Ripton.

Thunderstorm Wind in WINDSOR, VERMONT
From 16-AUG-07 17:15:00 to 16-AUG-07 17:15:00 (EST-5)
Location: BETHEL
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A large tree down and several branches, as well as a few power lines down on Oxbow road in Bethel.

Thunderstorm Wind in RUTLAND, VERMONT
From 16-AUG-07 16:50:00 to 16-AUG-07 16:50:00 (EST-5)
Location: BRANDON
Magnitude: 60.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and power lines down across Brandon with reports of trees on houses, porches and vehicles.

Thunderstorm Wind in RUTLAND, VERMONT
From 16-AUG-07 17:20:00 to 16-AUG-07 17:20:00 (EST-5)
Location: KILLINGTON
Magnitude: 55.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees, branches and power lines down along Route 4 between Rutland and Killington.

Thunderstorm Wind in CALEDONIA, VERMONT
From 16-AUG-07 15:50:00 to 16-AUG-07 15:50:00 (EST-5)
Location: HARDWICK
Magnitude: 55.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Post Office

Numerous trees and power lines down throughout the town of Hardwick.

Thunderstorm Wind in ORLEANS, VERMONT
From 16-AUG-07 15:55:00 to 16-AUG-07 15:55:00 (EST-5)
Location: GREENSBORO BEND
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Public

Trees down and reported power outages.

Thunderstorm Wind in RUTLAND, VERMONT
From 16-AUG-07 17:00:00 to 16-AUG-07 17:00:00 (EST-5)
Location: CHITTENDEN
Magnitude: 60.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Large swath of trees and power lines down with some embedded structural and vehicle damage.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 16-AUG-07 15:10:00 to 16-AUG-07 15:10:00 (EST-5)
Location: MILTON
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A 40 foot tree fell on a car.

Thunderstorm Wind in WASHINGTON, VERMONT
From 16-AUG-07 15:55:00 to 16-AUG-07 15:55:00 (EST-5)
Location: CABOT
Magnitude: 55.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Trees down with some damage to farmstead.

Thunderstorm Wind in CALEDONIA, VERMONT
From 16-AUG-07 16:15:00 to 16-AUG-07 16:15:00 (EST-5)
Location: LYNDONVILLE
Magnitude: 50.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees reported down throughout town.

Hail in RUTLAND, VERMONT
From 16-AUG-07 17:00:00 to 16-AUG-07 17:00:00 (EST-5)
Location: CHITTENDEN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Large hail just below the size of golf ball reported.

Thunderstorm Wind in FRANKLIN, VERMONT
From 16-AUG-07 15:00:00 to 16-AUG-07 15:00:00 (EST-5)
Location: GEORGIA CENTER
Magnitude: 60.00 EG
Property damage: 150.00K
Crop damage: 20.00K
Reported by: Law Enforcement

Numerous trees down along interstate 89 near exit 18 in both the north and south bound lanes closing the interstate. Also, numerous reports of trees and power lines down throughout Georgia and Georgia Center blocking local roads and Route 7 with damage to vehicles, decks, homes and mobile homes. Also, mature corn crops were flattened by thunderstorm winds.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 16-AUG-07 15:05:00 to 16-AUG-07 15:05:00 (EST-5)
Location: MILTON
Magnitude: 55.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power lines down throughout town, including a 40 foot tree that fell on a car with estimated winds in excess of 60 mph.

Hail in GRAND ISLE, VERMONT
From 16-AUG-07 14:55:00 to 16-AUG-07 14:55:00 (EST-5)
Location: GRAND ISLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Quarter size hail reported by retired NWS employee.

Hail in RUTLAND, VERMONT
From 16-AUG-07 19:35:00 to 16-AUG-07 19:35:00 (EST-5)
Location: MIDDLETOWN SPGS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail reported.

Thunderstorm Wind in GRAND ISLE, VERMONT
From 16-AUG-07 14:50:00 to 16-AUG-07 14:50:00 (EST-5)
Location: GRAND ISLE
Magnitude: 70.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees and powerlines down in Grand Isle, which have blocked and closed several roads including Route 2. Trees fell and trapped drivers in two vehicles with no injuries reported. Wind damage in the form of trees piercing through roofs, crushed vehicles, docks and patios torn off to several camps along the west shore of Route 2, including Irish Rover Lane.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 16-AUG-07 15:15:00 to 16-AUG-07 15:15:00 (EST-5)
Location: WESTFORD
Magnitude: 55.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Employee

Numerous trees and power lines down, especially along Route 128 and the Milton-Westford road. Some trees fell on homes, vehicles and sheds.

Thunderstorm Wind in FRANKLIN, VERMONT
From 16-AUG-07 15:20:00 to 16-AUG-07 15:20:00 (EST-5)
Location: FAIRFAX
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: NWS Employee

Numerous trees down throughout Fairfax including Buck Hollow road as well as Vermont Roues 104 and 104A. The damage path was estimated at 1 to 1.5 miles long by NWS employee.

Funnel Cloud in GRAND ISLE, VERMONT
From 16-AUG-07 14:55:00 to 16-AUG-07 14:55:00 (EST-5)
Location: SOUTH HERO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Funnel cloud reported to the north by fire chief near Keeler Bay along Route 2.

Hail in LAMOILLE, VERMONT
From 16-AUG-07 15:40:00 to 16-AUG-07 15:40:00 (EST-5)
Location: JEFFERSONVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail reported.

Hail in FRANKLIN, VERMONT
From 16-AUG-07 15:08:00 to 16-AUG-07 15:08:00 (EST-5)
Location: GEORGIA CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail reported.