Frigid, Canadian high pressure nosed into the Northeast on the 19th and settled there into the first part of the 20th. Low pressure developed in the southern Plains and lifted through the lower Mississippi and then Ohio Valley. Strong warm air advection along the warm front, pinned offshore by the strong high pressure, allowed secondary cyclogensis to occur farther up the Northeast coast as the open wave aloft approached. Heavy snow overspread western Maine early in the morning on the 20th. As warm air advection continued ahead of the upper level wave precipitation changed over predominantly sleet, as far north as the mountains of western Maine, before ending as snow showers.

Heavy Snow in NORTHERN FRANKLIN, MAINE
From 20-JAN-19 04:00:00 to 20-JAN-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Heavy snow moved into the western Maine mountains in the early morning hours and continued through the afternoon. Mixed precipitation stayed to the south, and snowfall totals ranged from 12 to 15 inches.

Heavy Snow in CENTRAL SOMERSET, MAINE
From 20-JAN-19 05:00:00 to 20-JAN-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Heavy snow moved into the western Maine mountains in the early morning hours and continued through the afternoon. Mixed precipitation stayed to the south, and snowfall totals ranged from 12 to 15 inches.

Heavy Snow in SOUTHERN FRANKLIN, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 18:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over the mountains and foothills of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours and continued into the afternoon. Snow changed to sleet and continued for much of the midday. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in SOUTHERN SOMERSET, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 18:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over the mountains and foothills of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours and continued into the afternoon. Snow changed to sleet and continued for much of the midday. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in INTERIOR YORK, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 6 to as much 10 inches in the higher terrain north of Acton, Shapleigh, and Waterboro.

Heavy Snow in ANDROSCOGGIN, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 6 to 10 inches.

Heavy Snow in KENNEBEC, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Several inches of snow fell before heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in INTERIOR WALDO, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 17:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Several inches of snow fell before heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in COASTAL WALDO, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 17:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Several inches of snow fell before heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in KNOX, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 17:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Several inches of snow fell before heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in LINCOLN, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Several inches of snow fell before heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in SAGADAHOC, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 6 to 8 inches.

Heavy Snow in COASTAL YORK, MAINE
From 20-JAN-19 01:00:00 to 20-JAN-19 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow broke out across the southwestern Maine coast just after midnight on the 20th, with heavy snow moving into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day, keeping snow amounts lower than areas farther north. Snowfall totals generally ranged from 6 to 9 inches. The highest totals were observed just inland from the coast, where ocean effect enhancement and coastal front convergence likely contributed to greater low level lift.

Heavy Snow in COASTAL CUMBERLAND, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening on the 19th in response to warm air advection aloft. Then heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day, keeping snow amounts lower than areas farther north. Snowfall totals generally ranged from 5 to 7 inches.

Heavy Snow in NORTHERN OXFORD, MAINE
From 20-JAN-19 04:00:00 to 20-JAN-19 18:00:00 (EST-5)
Reported by: Trained Spotter

Heavy snow moved into the western Maine mountains in the early morning hours and continued through the afternoon. Mixed precipitation stayed to the south, and snowfall totals ranged from 12 to 15 inches.

Heavy Snow in SOUTHERN OXFORD, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 18:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over the mountains and foothills of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours and continued into the afternoon. Snow changed to sleet and continued for much of the midday. Snowfall totals generally ranged from 8 to 12 inches.

Heavy Snow in INTERIOR CUMBERLAND, MAINE
From 19-JAN-19 21:00:00 to 20-JAN-19 16:00:00 (EST-5)
Reported by: Trained Spotter

A band of light to moderate snow developed over parts of western Maine late in the evening of the 19th in response to warm air advection developing aloft. Then heavy snow moved into area in the early morning hours. Snow changed to significant amounts of sleet during the morning and continued for much of the day. Snowfall totals generally ranged from 6 to as much 10 inches in the higher terrain north of Baldwin, Sebago, and Raymond.