An upper low ejecting out of the Rockies ultimately phased with a northern stream shortwave trough leading to cyclogenesis off the East Coast on the 5th. Low pressure formed over the southern Appalachians and moved northeast towards Nantucket by the evening of the 5th. The storm tracked into the Gulf of Maine and eventually began weakening in the Bay of Fundy early on the 6th. While the radar presentation looked like a classic northern New England snow storm, the antecedent air mass was marginal for snow and precipitation type became very elevation or rate dependent. Most notably the snow that did fall was wet and sticky. The wet snow bonded to the trees which led to downed tree limbs and widespread power outages.

Winter Storm in SOUTHERN FRANKLIN, MAINE
From 05-DEC-20 13:00:00 to 06-DEC-20 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow than the higher elevations. Snow totals ranged from around 4 inches in the valleys to as much as 12 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in NORTHERN OXFORD, MAINE
From 05-DEC-20 13:00:00 to 06-DEC-20 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the western Maine mountains afternoon on the 5th. Snow became moderate to occasionally heavy on northern edge of the precipitation shield through the late evening. Warmer temperatures in the lower elevations resulted in significantly less snow in some valleys than the higher elevations. Snow totals ranged from around 5 inches in the valleys to as much as 1 foot in the mountains.

Winter Storm in NORTHERN FRANKLIN, MAINE
From 05-DEC-20 14:00:00 to 06-DEC-20 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the western Maine mountains afternoon on the 5th. Snow became moderate to occasionally heavy on northern edge of the precipitation shield through the late evening. Warmer temperatures in the lower elevations resulted in significantly less snow in some valleys than the higher elevations. Snow totals ranged from around 5 inches in the valleys to as much as 18 inches in the Bigelow Range.

Winter Storm in CENTRAL SOMERSET, MAINE
From 05-DEC-20 14:00:00 to 06-DEC-20 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the western Maine mountains afternoon on the 5th. Snow became moderate to occasionally heavy on northern edge of the precipitation shield through the late evening. Warmer temperatures in the lower elevations resulted in significantly less snow in some valleys than the higher elevations. Snow totals ranged from around 6 inches in the valleys to as much as 1 foot in the higher terrain.

Winter Storm in INTERIOR YORK, MAINE
From 05-DEC-20 12:00:00 to 06-DEC-20 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area early afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow closer to the coast than the higher elevations of the north. Snow totals ranged from around 3 inches near the Maine Turnpike to as much as 6 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in CENTRAL INTERIOR CUMBERLAND, MAINE
From 05-DEC-20 12:00:00 to 06-DEC-20 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area early afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow closer to the coast than the higher elevations of the north. Snow totals ranged from around 3 inches near the Maine Turnpike to as much as 8 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in SOUTHERN OXFORD, MAINE
From 05-DEC-20 12:00:00 to 06-DEC-20 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area early afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in less snow than the higher elevations. Snow totals ranged from 4 to as much as 12 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in ANDROSCOGGIN, MAINE
From 05-DEC-20 13:00:00 to 06-DEC-20 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow closer to the coast than the higher elevations of the north. Snow totals ranged from around 4 inches near the Maine Turnpike to as much as 9 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in KENNEBEC, MAINE
From 05-DEC-20 13:00:00 to 06-DEC-20 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow closer to the coast than the higher elevations of the northwest. Snow totals ranged from around 4 inches south of the Maine Turnpike to as much as 8 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in SOUTHERN SOMERSET, MAINE
From 05-DEC-20 13:00:00 to 06-DEC-20 05:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow than the higher elevations of the north. Snow totals ranged from around 5 inches near the Maine Turnpike to as much as 8 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.

Winter Storm in INTERIOR CUMBERLAND HIGHLANDS, MAINE
From 05-DEC-20 12:00:00 to 06-DEC-20 04:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area early afternoon on the 5th. Snow became moderate to to heavy through the late evening under the strongest banded precipitation. Warmer temperatures in the lower elevations resulted in significantly less snow than the higher elevations. Snow totals ranged from around 4 inches in the valleys to as much as 8 inches in the higher terrain. The wet nature of the snow also allowed it to cling to trees and powerlines. The resulting downed limbs and powerlines led to widespread power outages.