Low pressure moved northeast across northern NY during the afternoon of March 26th. This was the same system responsible for the tornado outbreak across AL/MS/GA the previous day. Strong upper atmospheric winds (energy) combined with unseasonably mild and humid air accounted for a line of thunderstorms to develop just east of Lake Ontario and move ENE across the Adirondacks into the southern Champlain Valley of NY/VT and then into central VT.
One particular thunderstorm in this line caused scattered wind damage from northern Lewis and northern Hamilton counties into Essex county before moving across Addison county where an EF1 tornado occurred just north of Middlebury and this same storm caused scattered wind damage in Montpelier, East Montpelier, Plainfield and northern Barre.
Much of the damage was trees/limbs down along with utility lines but some structural damage to a flimsy, temporary tin roof in Plainfield due to thunderstorm winds and some significant damage to a home and barn structures due to an EF1 tornado in northern Middlebury.

Tornado in ADDISON, VERMONT
From 26-MAR-21 12:40:00 to 26-MAR-21 12:41:00 (EST-5)
Location: MIDDLEBURY
Tornado F-scale: EF1
Property damage: 75.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down just northeast of Juniper Lane causing limb
damage before throwing a barrel into a house and shattering a window.
As the tornado tracked northeastward, multiple softwood trees were
either uprooted or had snapped trunks. Once the tornado crossed
Painter Road, it forcibly removed an attached garage from a house,
caused a full collapse of the garage and did significant damage to the
shingled roof. A car was also flipped on its side at the residence.
As the tornado continued to move northeastward, it removed roofing from
multiple farm buildings and uprooted additional softwood trees. Once the
tornado moved northeast of the farm, it entered a field where it snapped
over a dozen additional trees at mid-trunk level before dissipating over
the field. This tornado injured two people during the brief touchdown.

Thunderstorm Wind in ADDISON, VERMONT
From 26-MAR-21 12:35:00 to 26-MAR-21 12:35:00 (EST-5)
Location: CORNWALL
Magnitude: 55.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees downed by thunderstorm winds in Cornwall.

Thunderstorm Wind in ADDISON, VERMONT
From 26-MAR-21 12:48:00 to 26-MAR-21 12:48:00 (EST-5)
Location: NEW HAVEN
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees downed by thunderstorm winds.

Thunderstorm Wind in WASHINGTON, VERMONT
From 26-MAR-21 13:05:00 to 26-MAR-21 13:05:00 (EST-5)
Location: IRASVILLE
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees and utility lines downed by thunderstorm winds along Route 100 near Rolston road.

Thunderstorm Wind in WASHINGTON, VERMONT
From 26-MAR-21 13:24:00 to 26-MAR-21 13:27:00 (EST-5)
Location: MONTPELIER JCT
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: Utility Company

Several trees and utility lines downed by thunderstorms winds near/along Route 12 south of Montpelier near Colonial Drive.

Thunderstorm Wind in WASHINGTON, VERMONT
From 26-MAR-21 13:25:00 to 26-MAR-21 13:27:00 (EST-5)
Location: MONTPELIER
Magnitude: 50.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Utility Company

Several trees and utility lines downed by thunderstorm winds along Towne Hill road and Bliss road.

Thunderstorm Wind in WASHINGTON, VERMONT
From 26-MAR-21 13:28:00 to 26-MAR-21 13:30:00 (EST-5)
Location: FAIRMONT ARPT
Magnitude: 55.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several trees  and some utility lines downed across East Montpelier, including a temporary, tin roof partially blown off a building.

Thunderstorm Wind in WASHINGTON, VERMONT
From 26-MAR-21 13:30:00 to 26-MAR-21 13:30:00 (EST-5)
Location: FAIRMONT ARPT
Magnitude: 50.00 EG
Property damage: 15.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several trees downed by thunderstorm winds along Country Club road in Barre, including several large pine trees on the Barre Country Club golf course.