On the afternoon of August 21st, a cold front supported by a strong mid-atmospheric disturbance moved across a unstable air mass across Vermont. Numerous showers and thunderstorms developed during the afternoon with some containing large hail and damaging winds. The strongest storm was in Rutland county near North Pawlet, where a microburst produced straight line winds estimated, by a NWS Storm Damage team, between 70 and 90 mph. Hundreds of trees were snapped or uprooted as well as downed power lines and damage to vehicles. In addition, a corn field was flattened by these damaging winds.

Hail in WINDSOR, VERMONT
From 21-AUG-11 12:42:00 to 21-AUG-11 12:42:00 (EST-5)
Location: BETHEL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported in Bethel Center.

Hail in ORLEANS, VERMONT
From 21-AUG-11 12:54:00 to 21-AUG-11 12:54:00 (EST-5)
Location: GREENSBORO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported along Route 16.

Hail in ORLEANS, VERMONT
From 21-AUG-11 13:05:00 to 21-AUG-11 13:05:00 (EST-5)
Location: MORGAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in CHITTENDEN, VERMONT
From 21-AUG-11 17:00:00 to 21-AUG-11 17:00:00 (EST-5)
Location: NORTH UNDERHILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported.

Hail in RUTLAND, VERMONT
From 21-AUG-11 17:50:00 to 21-AUG-11 17:50:00 (EST-5)
Location: SOUTH WALLINGFORD
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golfball size hail reported.

Thunderstorm Wind in WINDSOR, VERMONT
From 21-AUG-11 13:16:00 to 21-AUG-11 13:16:00 (EST-5)
Location: CHESTER
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and wires reported down in Chester.

Thunderstorm Wind in ORANGE, VERMONT
From 21-AUG-11 12:42:00 to 21-AUG-11 12:42:00 (EST-5)
Location: RANDOLPH
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Utility Company

Trees downed by thunderstorm winds with power lines down as well.

Thunderstorm Wind in RUTLAND, VERMONT
From 21-AUG-11 17:02:00 to 21-AUG-11 17:05:00 (EST-5)
Location: WELLS
Magnitude: 70.00 EG
Property damage: 75.00K
Crop damage: 10.00K
Reported by: NWS Storm Survey

NWS Storm survey team found more than 100 trees, snapped or uprooted from the New York border near Granville into North and West Pawlet. The damage encompassed a nearly 1 mile long by 1/2 mile wide swath of damage.

Thunderstorm Wind in ADDISON, VERMONT
From 21-AUG-11 17:10:00 to 21-AUG-11 17:10:00 (EST-5)
Location: GRANVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Several trees downed by thunderstorm winds and power outage.

Thunderstorm Wind in ORANGE, VERMONT
From 21-AUG-11 17:35:00 to 21-AUG-11 17:35:00 (EST-5)
Location: BROOKFIELD
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Public

Several trees downed by thunderstorm winds.

Thunderstorm Wind in RUTLAND, VERMONT
From 21-AUG-11 17:15:00 to 21-AUG-11 17:20:00 (EST-5)
Location: PAWLET
Magnitude: 60.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Numerous trees uprooted and snapped with damage to utility poles, lines and some vehicles.

Hail in FRANKLIN, VERMONT
From 21-AUG-11 17:12:00 to 21-AUG-11 17:12:00 (EST-5)
Location: BINGHAMVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail reported in Fletcher.