Weak low pressure formed on the morning of the 15th along a stationary boundary and moved up the Ohio River Valley and into the Northeast through the 16th. The system occluded and continued to move northeast, with the triple point passing south of southern New England. Secondary low pressure began to develop at the triple point on the afternoon of the 16th, rapidly deepening as it departed through the Gulf of Maine. The approach of a kicker shortwave helped to maintain an inverted trough northwest of the departing low, concentrating an area of snowfall over parts of eastern New Hampshire and western Maine.

Heavy Snow in NORTHERN OXFORD, MAINE
From 16-JAN-20 05:00:00 to 16-JAN-20 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow began in the early morning hours of the 16th. The most persistent and heaviest bands of snow remained near Route 2. Snow was moderate to heavy at times during the day, with an inch or more falling in an hour at times. Snow tapered off in the afternoon before coming to an end. Totals ranged from 4 inches north of Route 16 to 8 inches of heavy, wet snow in the Mahoosuc Mountains .

Heavy Snow in INTERIOR YORK, MAINE
From 16-JAN-20 02:00:00 to 16-JAN-20 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow began in the early morning hours of the 16th. The most persistent and heaviest bands of snow remained north of Route 202.  Snow was moderate to heavy at times during the day, with an inch or more falling in an hour at times. Snow tapered off in the afternoon before coming to an end. Totals ranged from 4 inches near the Maine Turnpike to 10 inches of heavy, wet snow north of Route 11.

Heavy Snow in SOUTHERN OXFORD, MAINE
From 16-JAN-20 03:00:00 to 16-JAN-20 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow began in the early morning hours of the 16th. The most persistent and heaviest bands of snow remained south of Route 2.  Snow was moderate to heavy at times during the day, with an inch or more falling in an hour at times. Snow tapered off in the afternoon before coming to an end. Totals ranged from 6 to 12 inches of heavy, wet snow.

Heavy Snow in INTERIOR CUMBERLAND, MAINE
From 16-JAN-20 03:00:00 to 16-JAN-20 17:00:00 (EST-5)
Reported by: Trained Spotter

Snow began in the early morning hours of the 16th. The most persistent and heaviest bands of snow remained overhead for much of the day.  Snow was moderate to heavy at times during the day, with an inch or more falling in an hour at times. Snow tapered off in the afternoon before coming to an end. Totals ranged from 8 to 12 inches of heavy, wet snow.

Heavy Snow in COASTAL CUMBERLAND, MAINE
From 16-JAN-20 03:00:00 to 16-JAN-20 17:00:00 (EST-5)
Reported by: Trained Spotter

Snow began in the early morning hours of the 16th. The most persistent and heaviest bands of snow remained mainly north of Portland.  Snow was moderate to heavy at times during the day, with an inch or more falling in an hour at times. Snow tapered off in the afternoon before coming to an end. Totals ranged from 4 inches near Cape Elizabeth to 12 inches of heavy, wet snow near Brunswick.

Heavy Snow in ANDROSCOGGIN, MAINE
From 16-JAN-20 04:00:00 to 16-JAN-20 17:00:00 (EST-5)
Reported by: Trained Spotter

Snow began in the early morning hours of the 16th. The most persistent and heaviest bands of snow remained mainly west of the Androscoggin River.  Snow was moderate to heavy at times during the day, with an inch or more falling in an hour at times. Snow tapered off in the afternoon before coming to an end. Totals ranged from 6 to 9 inches of heavy, wet snow.