A warm front moved across Vermont during the morning hours of May 29th, which lead to numerous thunderstorms with heavy rain, damaging lightning and some isolated large hail and strong winds. Some of these thunderstorms deposited up to 2 inches of rainfall in portions of north-central and northeast Vermont.
A warm, humid and unstable air mass was draped across the region in the afternoon with an approaching cold front from Ontario, Canada. Numerous thunderstorms developed ahead of the cold front during the afternoon crossing New York into Vermont. There were numerous reports of hail greater than an inch in diameter, damaging winds, along with a confirmed EF0 tornado in West Glover VT.
Some of these storms trained across the same areas, including those that witnessed nearly two inches of rain earlier in the day. The end result was flash flooding in portions of north-central, northeast Vermont and Addison county with radar estimated storm total rainfall of 3 to 5 inches.

Tornado in ORLEANS, VERMONT
From 29-MAY-12 14:25:00 to 29-MAY-12 14:26:00 (EST-5)
Location: SOUTH ALBANY
Tornado F-scale: EF0
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Tornado touched down near a private residence on Beach Hill road and tracked eastward for approximately 1/3 mile. Maximum width was 100 yards. Damage was limited to a chimney of the private residence and approximately 45 trees.

Hail in LAMOILLE, VERMONT
From 29-MAY-12 14:00:00 to 29-MAY-12 14:01:00 (EST-5)
Location: EDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

At least quarter size hail and strong winds.

Hail in ORLEANS, VERMONT
From 29-MAY-12 14:05:00 to 29-MAY-12 14:06:00 (EST-5)
Location: LOWELL
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter to half dollar size hail reported.

Lightning in WASHINGTON, VERMONT
From 29-MAY-12 14:20:00 to 29-MAY-12 14:22:00 (EST-5)
Location: MONTPELIER
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Lightning struck a building with some structural damage.

Flash Flood in ORLEANS, VERMONT
From 29-MAY-12 16:30:00 to 29-MAY-12 19:30:00 (EST-5)
Location: GLOVER
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Dexter Mountain Road was damaged by flash flood runoff east of Glover Village.

Flash Flood in ADDISON, VERMONT
From 29-MAY-12 15:06:00 to 29-MAY-12 18:00:00 (EST-5)
Location: SHOREHAM
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Portions of Route 22A were inundated by flash flooding.

Hail in ORLEANS, VERMONT
From 29-MAY-12 14:15:00 to 29-MAY-12 14:16:00 (EST-5)
Location: ALBANY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail and some downed branches.

Flash Flood in ADDISON, VERMONT
From 29-MAY-12 15:10:00 to 29-MAY-12 18:00:00 (EST-5)
Location: CORNWALL
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous local roads were closed by flash flooding in Cornwall.

Hail in ADDISON, VERMONT
From 29-MAY-12 14:28:00 to 29-MAY-12 14:28:00 (EST-5)
Location: CREAM HILL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail reported.

Hail in CHITTENDEN, VERMONT
From 29-MAY-12 14:38:00 to 29-MAY-12 14:38:00 (EST-5)
Location: CHAMPLAIN ARPT
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail reported.

Hail in ORLEANS, VERMONT
From 29-MAY-12 14:45:00 to 29-MAY-12 14:45:00 (EST-5)
Location: WEST GLOVER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail on Bear Claw road.

Hail in CHITTENDEN, VERMONT
From 29-MAY-12 14:52:00 to 29-MAY-12 14:52:00 (EST-5)
Location: COLCHESTER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail reported.

Flash Flood in ADDISON, VERMONT
From 29-MAY-12 15:57:00 to 29-MAY-12 18:00:00 (EST-5)
Location: RIPTON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

North Branch Road in Ripton near the intersection of Dugway Road was closed by flash flooding.

Flash Flood in ORLEANS, VERMONT
From 29-MAY-12 16:30:00 to 29-MAY-12 19:30:00 (EST-5)
Location: LOWELL
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Flash flooding along East Branch and Burgess Branch, tributaries to the Missisquoi River, caused damage along Mink Farm Road, Route 100, and Route 58 in Lowell. Several parked cars were moved around by the water. Portions of Mink Farm Road and Route 100 were washed out by flood waters.

Flash Flood in ORLEANS, VERMONT
From 29-MAY-12 16:30:00 to 29-MAY-12 19:00:00 (EST-5)
Location: WESTMORE
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: County Official

Flash flooding caused rocks and debris to wash on to Route 5A along Lake Willoughby.

Hail in ADDISON, VERMONT
From 29-MAY-12 14:45:00 to 29-MAY-12 14:45:00 (EST-5)
Location: SHOREHAM
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar size hail reported.

Hail in WINDSOR, VERMONT
From 28-MAY-12 23:08:00 to 28-MAY-12 23:08:00 (EST-5)
Location: RIVERSIDE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar size hail reported.

Hail in WINDSOR, VERMONT
From 29-MAY-12 15:11:00 to 29-MAY-12 15:11:00 (EST-5)
Location: BETHEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in WINDSOR, VERMONT
From 29-MAY-12 15:09:00 to 29-MAY-12 15:09:00 (EST-5)
Location: BETHEL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball size hail reported.

Lightning in CHITTENDEN, VERMONT
From 29-MAY-12 14:45:00 to 29-MAY-12 14:45:00 (EST-5)
Location: CHECKERBERRY
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Lightning struck and split 5 trees.

Hail in RUTLAND, VERMONT
From 29-MAY-12 16:18:00 to 29-MAY-12 16:18:00 (EST-5)
Location: IRA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail ranging from ping-pong to just shy of golf ball size.

Hail in WINDSOR, VERMONT
From 29-MAY-12 15:18:00 to 29-MAY-12 15:18:00 (EST-5)
Location: SOUTH ROYALTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in WINDSOR, VERMONT
From 29-MAY-12 15:42:00 to 29-MAY-12 15:42:00 (EST-5)
Location: SPRINGFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in WASHINGTON, VERMONT
From 29-MAY-12 00:30:00 to 29-MAY-12 00:30:00 (EST-5)
Location: EAST MONTPELIER CENT
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Ping pong to golf ball size hail reported.

Hail in WASHINGTON, VERMONT
From 29-MAY-12 00:40:00 to 29-MAY-12 00:40:00 (EST-5)
Location: NORTH MONTPELIER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Flash Flood in ADDISON, VERMONT
From 29-MAY-12 15:39:00 to 29-MAY-12 18:00:00 (EST-5)
Location: RIPTON
Flood cause: Heavy Rain
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A portion of Route 125 was closed by flash flooding in Ripton between Ripton and Hancock village centers.

Flash Flood in LAMOILLE, VERMONT
From 29-MAY-12 17:00:00 to 29-MAY-12 19:00:00 (EST-5)
Location: BELVIDERE JCT
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Public

Back Road in Belividere was washed out by Flash Flooding. Some sections were scoured to a depth of five to six feet down to bedrock.

Hail in WINDSOR, VERMONT
From 28-MAY-12 23:30:00 to 28-MAY-12 23:30:00 (EST-5)
Location: EAST BARNARD
Magnitude: 1.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Golf ball size hail reported.

Hail in RUTLAND, VERMONT
From 29-MAY-12 16:30:00 to 29-MAY-12 16:30:00 (EST-5)
Location: RUTLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail and estimated 30 to 40 mph wind gusts.

Hail in RUTLAND, VERMONT
From 29-MAY-12 13:24:00 to 29-MAY-12 13:24:00 (EST-5)
Location: BENSON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar sized hail reported.

Hail in GRAND ISLE, VERMONT
From 29-MAY-12 12:33:00 to 29-MAY-12 12:33:00 (EST-5)
Location: ALBURG CENTER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported and covering the ground.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 13:13:00 to 29-MAY-12 13:13:00 (EST-5)
Location: HIGHGATE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail reported as well as covering the ground.

Flash Flood in LAMOILLE, VERMONT
From 29-MAY-12 15:33:00 to 29-MAY-12 19:30:00 (EST-5)
Location: BELVIDERE CENTER
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

A portion of one lane of Route 109 in Belvidere was washed out by flash flooding.

Hail in ORLEANS, VERMONT
From 29-MAY-12 14:30:00 to 29-MAY-12 14:30:00 (EST-5)
Location: MILL VLG
Magnitude: 1.75 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Golf ball size hail reported.

Hail in RUTLAND, VERMONT
From 29-MAY-12 16:00:00 to 29-MAY-12 16:00:00 (EST-5)
Location: NORTH CLARENDON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 14:40:00 to 29-MAY-12 14:40:00 (EST-5)
Location: EAST FRANKLIN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 12:53:00 to 29-MAY-12 12:53:00 (EST-5)
Location: ENOSBURG FALLS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny size hail reported.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 13:31:00 to 29-MAY-12 13:31:00 (EST-5)
Location: ENOSBURG FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 12:37:00 to 29-MAY-12 12:37:00 (EST-5)
Location: SWANTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size and smaller covering the ground.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 13:15:00 to 29-MAY-12 13:15:00 (EST-5)
Location: SHELDON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Slightly larger than quarter, possibly half dollar size and smaller covering the ground.

Thunderstorm Wind in GRAND ISLE, VERMONT
From 29-MAY-12 14:37:00 to 29-MAY-12 14:37:00 (EST-5)
Location: GRAND ISLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees down on Adams School road.

Hail in ADDISON, VERMONT
From 29-MAY-12 13:32:00 to 29-MAY-12 13:32:00 (EST-5)
Location: CORNWALL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail reported.

Hail in ADDISON, VERMONT
From 29-MAY-12 13:44:00 to 29-MAY-12 13:44:00 (EST-5)
Location: MIDDLEBURY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Thunderstorm Wind in ORLEANS, VERMONT
From 29-MAY-12 14:45:00 to 29-MAY-12 14:45:00 (EST-5)
Location: WEST GLOVER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

A large 2 foot diameter Maple tree downed by thunderstorm winds.

Thunderstorm Wind in RUTLAND, VERMONT
From 29-MAY-12 16:16:00 to 29-MAY-12 16:16:00 (EST-5)
Location: IRA
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Public

Widespread tree damage and some light structural damage.

Hail in RUTLAND, VERMONT
From 29-MAY-12 16:32:00 to 29-MAY-12 16:32:00 (EST-5)
Location: RUTLAND
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel size hail and strong winds.

Hail in FRANKLIN, VERMONT
From 29-MAY-12 13:45:00 to 29-MAY-12 13:47:00 (EST-5)
Location: ENOSBURG FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail reported as well as covering the ground.

Thunderstorm Wind in WINDSOR, VERMONT
From 28-MAY-12 23:40:00 to 28-MAY-12 23:40:00 (EST-5)
Location: SHARON
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

State police reported large tree and several other branches down on Howe Hill road.

Thunderstorm Wind in WINDSOR, VERMONT
From 29-MAY-12 16:55:00 to 29-MAY-12 16:55:00 (EST-5)
Location: CHESTER
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Estimated wind gust of 50 knots along with several large tree limbs downed.

Thunderstorm Wind in CHITTENDEN, VERMONT
From 29-MAY-12 14:30:00 to 29-MAY-12 14:30:00 (EST-5)
Location: CHECKERBERRY
Magnitude: 55.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: NWS Employee

Numerous trees down along Route 7 and West Milton roads along with some structural damage.

Thunderstorm Wind in ORANGE, VERMONT
From 29-MAY-12 00:20:00 to 29-MAY-12 00:20:00 (EST-5)
Location: EAST BROOKFIELD
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Department of Highways

Trees down on Route 65.

Lightning in WASHINGTON, VERMONT
From 29-MAY-12 06:52:00 to 29-MAY-12 07:00:00 (EST-5)
Location: CABOT
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three house fires caused by lightning strikes in Barre, East Montpelier and Cabot/Marshfield.

Flash Flood in LAMOILLE, VERMONT
From 29-MAY-12 17:45:00 to 29-MAY-12 19:30:00 (EST-5)
Location: EDEN MILLS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Route 100 was inundated at the Boy Scout Camp Road near Lake Eden.