Hot and muggy conditions prevailed over the area as the region had been on the backside of an Atlantic Ridge in the warm sector of an unstable air mass.  A strengthening area of low pressure began to approach western Maine by midday along with a surface cold front.  A compact shortwave upper level trough dug into the region from Ontario increased the mid-level shear over Maine. Two distinct rounds of thunderstorms crossed the state with the first pre-frontal trough bringing damaging wind gusts around noon, with a second round of damaging thunderstorms by mid-afternoon.

Hail in OXFORD, MAINE
From 06-JUN-20 09:10:00 to 06-JUN-20 09:15:00 (EST-5)
Location: EAST HIRAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three quarter inch hail and gusty winds was reported by a weather spotter on the Hiram and Baldwin by a weather spotter.

Thunderstorm Wind in CUMBERLAND, MAINE
From 06-JUN-20 11:25:00 to 06-JUN-20 11:30:00 (EST-5)
Location: HARRISON MAPLE ARPT
Magnitude: 52.00 EG
Reported by: Public

Thunderstorm outflow winds downed numerous trees near Cape Monday Rd in Bridgton, ME.

Thunderstorm Wind in CUMBERLAND, MAINE
From 06-JUN-20 11:55:00 to 06-JUN-20 11:55:00 (EST-5)
Location: UPPER GLOUCESTER
Magnitude: 50.00 EG
Reported by: NWS Employee

Trees and wires down on Tobey Road in New Gloucester.

Thunderstorm Wind in YORK, MAINE
From 06-JUN-20 12:15:00 to 06-JUN-20 12:15:00 (EST-5)
Location: WELLS BEACH
Magnitude: 50.00 EG
Reported by: Public

Large flag pole snapped in half by thunderstorm winds.

Thunderstorm Wind in CUMBERLAND, MAINE
From 06-JUN-20 11:50:00 to 06-JUN-20 11:50:00 (EST-5)
Location: NORTH RAYMOND
Magnitude: 50.00 EG
Reported by: Amateur Radio

Severe thunderstorm wind gusts downed trees and wires on Quarry Road in New Gloucester.

Thunderstorm Wind in CUMBERLAND, MAINE
From 06-JUN-20 11:55:00 to 06-JUN-20 11:55:00 (EST-5)
Location: COBBS BRIDGE
Magnitude: 50.00 EG
Reported by: Amateur Radio

Severe thunderstorm wind gusts downed trees and wires on Cobbs Bridge Road & Rowe Station Road in New Gloucester.

Thunderstorm Wind in CUMBERLAND, MAINE
From 06-JUN-20 12:25:00 to 06-JUN-20 12:25:00 (EST-5)
Location: WARDTOWN
Magnitude: 50.00 EG
Reported by: Public

Trees felled by thunderstorm winds near the Durham/Brunswick town line.

Hail in YORK, MAINE
From 06-JUN-20 12:07:00 to 06-JUN-20 12:07:00 (EST-5)
Location: NORTH BERWICK
Magnitude: 1.00 
Reported by: Public

Quarter size hail reported by the public in North Berwick.

Hail in YORK, MAINE
From 06-JUN-20 13:40:00 to 06-JUN-20 13:40:00 (EST-5)
Location: SHAPLEIGH
Magnitude: 1.00 
Reported by: Public

Quarter size hail by the public in Shapleigh.

Thunderstorm Wind in YORK, MAINE
From 06-JUN-20 13:40:00 to 06-JUN-20 13:40:00 (EST-5)
Location: SHAPLEIGH
Magnitude: 50.00 EG
Reported by: Public

Severe thunderstorm wind gusts downed multiple trees in Shapleigh.

Thunderstorm Wind in YORK, MAINE
From 06-JUN-20 13:42:00 to 06-JUN-20 13:42:00 (EST-5)
Location: ACTON
Magnitude: 50.00 EG
Reported by: Social Media

Photo relayed via social media of a large pine tree down when the severe thunderstorm moved through Shapleigh.

Thunderstorm Wind in YORK, MAINE
From 06-JUN-20 13:50:00 to 06-JUN-20 13:50:00 (EST-5)
Location: ROSS CORNER
Magnitude: 50.00 EG
Reported by: Law Enforcement

Severe thunderstorm wind gusts downed trees near Waterboro.

Hail in OXFORD, MAINE
From 06-JUN-20 08:55:00 to 06-JUN-20 09:00:00 (EST-5)
Location: PORTERFIELD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail stones were reported in Brownfield Maine.