Rapidly intensifying low pressure tracked to the Gulf of Maine during the night of the 29th...moved northeast across the region...then exited northeast Maine during the morning of the 30th. Snow expanded across the region through the afternoon and evening of the 29th. The snow became heavy at times through the late evening of the 29th into the early morning hours of the 30th. Snowfall rates of 2 to 3 inches per hour occurred within the stronger snow bands...with local rates in excess of 4 inches per hour. Thundersnow was also reported during the early morning hours. Snow then diminished through the morning hours of the 30th in the wake of the exiting low. Warning criteria snow accumulations occurred through the early morning hours of the 30th. Storm total snow accumulations ranged from 12 to 20 inches to the west of the low track from Piscataquis and northern Somerset counties to the Saint John Valley.  Accumulations of 8 to 15 inches occurred along and to the east of the track from northern Penobscot to eastern Aroostook counties. Lesser accumulations occurred from Hancock to coastal and central Washington counties where snow transitioned to rain.
Strong onshore winds developed along the Downeast coast to the east of the low track. South to southeast winds occurred through the late evening of the 29th into the early morning hours of the 30th...then became southwesterly during the morning of the 30th. Peak wind gusts along the coast generally occurred through the early morning hours of the 30th with gusts of 50 to 60 mph. The winds snapped and uprooted trees along with many broken branches. Wind gusts of 35 to 45 mph combined with heavy wet snow on trees and power lines to cause power outages across portions of Penobscot county. Power outages peaked at around 14500 customers during the early morning hours of the 30th. Around 13000 of the outages were reported across Penobscot county with around 900 in Hancock county.

Winter Storm in SOUTHERN PISCATAQUIS, MAINE
From 29-DEC-16 14:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 15 to 20 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in NORTHERN PENOBSCOT, MAINE
From 29-DEC-16 15:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 10 to 15 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in CENTRAL PENOBSCOT, MAINE
From 29-DEC-16 15:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 7 to 12 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in NORTHERN WASHINGTON, MAINE
From 29-DEC-16 16:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 10 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in NORTHEAST AROOSTOOK, MAINE
From 29-DEC-16 16:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 9 to 16 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in SOUTHEAST AROOSTOOK, MAINE
From 29-DEC-16 16:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 15 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

High Wind in COASTAL HANCOCK, MAINE
From 29-DEC-16 23:00:00 to 30-DEC-16 09:00:00 (EST-5)
Magnitude: 52.00 EG
Reported by: Mesonet

Sustained onshore winds of 30 to 40 mph...with gusts of 55 to 60 mph...brought down trees and contributed to power outages. Numerous trees were snapped or uprooted along with many broken branches. The strongest winds generally occurred from the late evening hours of the 29th into the early morning hours of the 30th.

Winter Storm in NORTHWEST AROOSTOOK, MAINE
From 29-DEC-16 14:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 12 to 18 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

High Wind in COASTAL WASHINGTON, MAINE
From 29-DEC-16 23:00:00 to 30-DEC-16 09:00:00 (EST-5)
Magnitude: 52.00 EG
Reported by: Mesonet

Sustained onshore winds of 30 to 40 mph...with gusts of 55 to 60 mph...brought down trees and contributed to power outages. Numerous trees were snapped or uprooted along with many broken branches. The strongest winds generally occurred from the late evening hours of the 29th into the early morning hours of the 30th.

Winter Storm in SOUTHERN PENOBSCOT, MAINE
From 29-DEC-16 14:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations generally ranged from 7 to 12 inches...with lesser totals across southeast portions of the zone. Wind gusts of 35 to 45 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in NORTHERN SOMERSET, MAINE
From 29-DEC-16 14:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Other Federal Agency

Storm total snow accumulations ranged from 15 to 20 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in NORTHERN PISCATAQUIS, MAINE
From 29-DEC-16 14:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Other Federal Agency

Storm total snow accumulations ranged from 15 to 20 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.

Winter Storm in CENTRAL PISCATAQUIS, MAINE
From 29-DEC-16 14:00:00 to 30-DEC-16 11:30:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 15 to 21 inches. Wind gusts of 35 to 40 mph...locally stronger across higher terrain areas...produced extensive blowing and drifting snow with near whiteout conditions at times.