A very strong shortwave and associated cold front were approaching from the west on the morning of July 1st. Ahead of the front, a very warm and moist air mass was in place over New England with values of precipitable water around 2 inches. Strong directional and speed shear contributed to numerous super cells that produced damaging winds and 5 confirmed tornadoes. In addition, very heavy rain associated with these cells produced flash flooding to many area roads with damage totaling in the hundreds of thousands of dollars.

Thunderstorm Wind in OXFORD, MAINE
From 01-JUL-17 17:10:00 to 01-JUL-17 17:15:00 (EST-5)
Location: EAST FRYEBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm produced a concentrated area of damage to trees and homes at Mountain Road and Trail Circle in East Fryeburg.

Thunderstorm Wind in OXFORD, MAINE
From 01-JUL-17 17:00:00 to 01-JUL-17 17:04:00 (EST-5)
Location: BRYANT POND
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

A severe thunderstorm downed large branches in Bryant Pond.

Thunderstorm Wind in CUMBERLAND, MAINE
From 01-JUL-17 17:28:00 to 01-JUL-17 17:32:00 (EST-5)
Location: BRIDGTON
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees on Cape Monday Road in Harrison.

Thunderstorm Wind in CUMBERLAND, MAINE
From 01-JUL-17 13:30:00 to 01-JUL-17 13:35:00 (EST-5)
Location: NAPLES
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees that blocked Route 302 in Naples.

Thunderstorm Wind in CUMBERLAND, MAINE
From 01-JUL-17 17:20:00 to 01-JUL-17 17:25:00 (EST-5)
Location: NORTH BRIDGTON
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees on Chadborn Hill Road and Highland Road in Bridgton.

Thunderstorm Wind in OXFORD, MAINE
From 01-JUL-17 15:20:00 to 01-JUL-17 15:25:00 (EST-5)
Location: FRYEBURG
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

A severe thunderstorm downed trees and wires in Fryeburg.

Tornado in CUMBERLAND, MAINE
From 01-JUL-17 13:20:00 to 01-JUL-17 13:34:00 (EST-5)
Location: EAST SEBAGO
Tornado F-scale: EF0
Crop damage: 0.00K
Reported by: NWS Storm Survey

A small tornado touched down near the western shore of Lake Sebago in East Sebago  before moving over the lake and dissipating.  The tornado was confirmed based on the combination of eyewitness reports, pictures, and video, along with damage on the ground.
Several snapped or uprooted pine and oak trees were reported on Garden Estates Drive in East Sebago.  A pontoon boat was flipped near the lake shore. Based on the damage, the tornado was rated and EF0 with maximum winds estimated to have been about 75 mph.

Tornado in OXFORD, MAINE
From 01-JUL-17 17:31:00 to 01-JUL-17 17:36:00 (EST-5)
Location: OTISFIELD
Tornado F-scale: EF0
Reported by: NWS Storm Survey

A small tornado touched down near the town of Otisfield, Oxford County, based on ground damage, eyewitness reports, and pictures.
The tornado touched down near Jesse Mill Road with roughly a half dozen large pines trees uprooted. Video showed a rotating cloud base and possible funnel cloud observed west of Bolsters Mills Road just before this time. Damage also occurred on Bolsters Mills Road with large branches downed on power lines.  As the storm moved east, additional damage was noted on Bell Hill Road where a large pine tree fell on a house and a number of other pine trees were uprooted, some of which blew down onto power lines.  Additional damaged and downed trees were found near the intersection of Peaco Hill Road and Rayville Road, as well as downed power lines. Some eyewitnesses reported the ear-popping sensation oftentimes reported with tornadoes. Video also showed substantial rotation at cloud base to the east of where the tornado occurred. This tornado was spawned from the same storm that produced a tornado near Bridgton about 20 minutes earlier.

Thunderstorm Wind in OXFORD, MAINE
From 01-JUL-17 17:35:00 to 01-JUL-17 17:40:00 (EST-5)
Location: NORWAY OXFORD CO ARP
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees on Route 121 in Norway.

Thunderstorm Wind in OXFORD, MAINE
From 01-JUL-17 17:40:00 to 01-JUL-17 17:45:00 (EST-5)
Location: DENMARK
Magnitude: 50.00 EG
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees and wires and damaged buildings in Denmark.

Thunderstorm Wind in OXFORD, MAINE
From 01-JUL-17 16:45:00 to 01-JUL-17 16:49:00 (EST-5)
Location: ANDOVER
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A severe thunderstorm downed trees on Wyman Hill Road in Andover.

Tornado in CUMBERLAND, MAINE
From 01-JUL-17 17:14:00 to 01-JUL-17 17:25:00 (EST-5)
Location: BRIDGTON
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado that formed over the southeast portion of Highland Lake moved onshore snapping and uprooting several large trees some of which fell onto structures and vehicles. There was a report of one minor injury due to a person being cut by glass.
The tornado appeared to have briefly lifted off the ground before touching back
down on the west shore of Long Lake in the vicinity of Obelazy Lane where a camp ground was particularly hard hit. This area received extensive damage resulting from numerous large softwood and hardwood trees falling onto cars, A-Frame buildings and camping vehicles. Despite the widespread damage...no injuries were reported in this area.
This tornado was rated a high end EF1 with winds up to 110 mph. This was based on large hardwood and softwood trees being snapped at the base of the trees. Some trees were over 2 feet in diameter. There was no significant debarking noted which kept the
rating in the EF1 category.

Tornado in CUMBERLAND, MAINE
From 01-JUL-17 15:42:00 to 01-JUL-17 15:46:00 (EST-5)
Location: WEST BRIDGTON
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down at the Shawnee Peak ski resort and traveled northeast across the Route 302 causeway to the eastern shore of Moose Pond.
The first visible damage was on the mountain at Shawnee Peak ski resort near Tycoon and Upper Roosevelt trails where several large trees were snapped and uprooted. Additional damage was noted just to the southeast of the parking lot near the intersection of Jaks Way and Mountain Road. The tornado then moved across Moose Pond, crossing the causeway of Route 302. Multiple power poles were blown over on the causeway. Additional sporadic tree damage was noted along the eastern shore of Moose Pond consistent with a tornado track. This damage included an uprooted tree that damaged a dock. The tornado likely lifted off the ground shortly after reaching the eastern shore of Moose Pond.  A motorist on Rt. 302 and several residents on the eastern shore of Moose Pond observed the tornado as it crossed Moose Pond and the Route 302 causeway.
This tornado was rated as an EF1 with winds up to 100 mph based on snapped large hardwood and softwood trees along the path, as well as power poles along the causeway leaning due to the wind.

Thunderstorm Wind in CUMBERLAND, MAINE
From 01-JUL-17 17:35:00 to 01-JUL-17 17:40:00 (EST-5)
Location: HARRISON MAPLE ARPT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A severe thunderstorm downed trees on Edes Falls Road in Harrison.

Tornado in OXFORD, MAINE
From 01-JUL-17 17:09:00 to 01-JUL-17 17:10:00 (EST-5)
Location: EAST FRYEBURG
Tornado F-scale: EF1
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado touched down on  the southwestern shore of Moose Pond in Denmark in Oxford County.  Dozens of trees were snapped or uprooted in a path which crossed Mountain Road and extended into Moose Pond. Damaged trees fell onto at least one vehicle, multiple cabins, and at least one boat and nearby dock causing substantial structural damage.
People further north along the shore of Moose Pond were able to observe what was likely the tornado as it emerged from the side of the mountain and out onto Moose Pond. It is possible that the tornado could have continued farther across the pond and
into the town of Bridgton, but damage surveys were unable to confirm this. This storm circulation eventually went on to produce another tornado in Bridgton about twenty minutes later.
Considering the substantial number of uprooted and snapped trees within the core path of this tornado, winds were estimated to be as high as 95 mph, giving the tornado an EF1 rating on the Enhanced Fujita Scale.