An intensifying coastal low approached from the southwest during the 20th...tracked along the Downeast coast that night...exiting across the Maritimes during the 21st. Snow expanded across the region during the early morning hours of the 20th. Snow intensities rapidly increased through the remainder of the morning with heavy snow developing. Heavy snow then persisted through the afternoon into the evening...with snowfall rates of 2 to 3 inches per hour at times in the heavier snow bands. Winds also steadily increased through the 20th with occasional gusts of 30 to 40 mph producing near blizzard conditions at times. Snow diminished...from south to north...through the evening of the 20th into the early morning hours of the 21st. Lighter snows persisted across northern areas into the morning of the 21st before ending. However...extensive blowing and drifting snow persisted across northern areas through the remainder of the 21st into the early morning hours of the 22nd. Storm total snow accumulations across northern portions of Aroostook...Somerset and Piscataquis counties generally ranged from 18 to 22 inches with local totals to around 24 inches. Warning criteria snow accumulations occurred through the late morning into early afternoon of the 20th.
South and east of a line from central Piscataquis...to northern Penobscot...to southeast Aroostook counties the snow mixed with or changed to sleet. Storm total snow accumulations generally ranged from 10 to 18 inches in an area from Houlton...to Millinocket...to Greenville along with 1 to 3 inches of sleet. Snow accumulations across the remainder of the region...inland  from the coast...generally ranged from 8 to 14 inches along with 1 to 4 inches of sleet. Along the Downeast coast...snow accumulations generally ranged from 6 to 13 inches along with 1 to 4 inches of sleet and a tenth to quarter inch of ice. Warning criteria snow accumulations occurred through the late morning into early afternoon of the 20th.
A high astronomical tide...along with large waves with the major coastal storm...contributed to minor coastal flooding along the Downeast coast around the time of high tide on the morning of the 20th. Minor coastal flooding was reported on several roads and locations.

Winter Storm in NORTHEAST AROOSTOOK, MAINE
From 20-JAN-19 04:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations generally ranged from 15 to 20 inches...with local totals up to 25 inches. Winds gusted to 30 to 40 mph. A record daily snowfall of 16.9 inches occurred at Caribou on the 20th.

Winter Storm in SOUTHERN PENOBSCOT, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 22:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 12 inches...along with 1 to 4 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in INTERIOR HANCOCK, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 22:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 12 inches...along with 1 to 4 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in CENTRAL WASHINGTON, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 22:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 7 to 12 inches...along with 1 to 4 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in COASTAL HANCOCK, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 22:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 6 to 13 inches...along with 1 to 4 inches of sleet and a tenth to a quarter inch of ice. Winds gusted to 30 to 40 mph.

Winter Storm in COASTAL WASHINGTON, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 22:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 6 to 11 inches...along with 1 to 4 inches of sleet and a tenth to a quarter inch of ice. Winds gusted to 30 to 40 mph.

Winter Storm in CENTRAL PENOBSCOT, MAINE
From 19-JAN-19 23:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 12 inches...along with 1 to 3 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in NORTHERN WASHINGTON, MAINE
From 19-JAN-19 23:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 14 inches...along with 1 to 3 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in SOUTHERN PISCATAQUIS, MAINE
From 19-JAN-19 23:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 8 to 14 inches...along with 1 to 2 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in CENTRAL PISCATAQUIS, MAINE
From 19-JAN-19 23:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 11 to 18 inches...along with around 1 inch of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in NORTHERN PENOBSCOT, MAINE
From 20-JAN-19 02:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 11 to 17 inches...along with 1 to 3 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in SOUTHEAST AROOSTOOK, MAINE
From 20-JAN-19 02:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 10 to 17 inches...along with 1 to 3 inches of sleet. Winds gusted to 30 to 40 mph.

Winter Storm in NORTHERN SOMERSET, MAINE
From 20-JAN-19 02:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Other Federal Agency

Storm total snow accumulations ranged from 20 to 24 inches. Winds gusted to 30 to 40 mph.

Winter Storm in NORTHERN PISCATAQUIS, MAINE
From 20-JAN-19 02:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 18 to 22 inches. Winds gusted to 30 to 40 mph.

Winter Storm in NORTHWEST AROOSTOOK, MAINE
From 20-JAN-19 04:00:00 to 21-JAN-19 12:00:00 (EST-5)
Reported by: Trained Spotter

Storm total snow accumulations ranged from 18 to 22 inches. Winds gusted to 30 to 40 mph.

Coastal Flood in COASTAL HANCOCK, MAINE
From 20-JAN-19 08:00:00 to 20-JAN-19 12:00:00 (EST-5)
Reported by: Emergency Manager

A high astronomical tide...along with large waves with the major coastal storm...contributed to coastal flooding for several hours around the time of high tide during the morning of the 20th. Minor coastal flooding was reported at the Deer Isle Causeway and the Route 175 Causeway. Minor flooding with splash over was reported along Seawall Road. Minor tidal flooding also occurred at Stonington Harbor next to the harbor pier.

Coastal Flood in COASTAL WASHINGTON, MAINE
From 20-JAN-19 08:00:00 to 20-JAN-19 12:00:00 (EST-5)
Reported by: Emergency Manager

A high astronomical tide...along with large waves with the major coastal storm...contributed to coastal flooding for several hours around the time of high tide during the morning of the 20th. Minor coastal flooding was reported at a restaurant parking lot in Machias.