On December 16th low pressure develop near Chesapeake Bay and slowly moved northeastward along the coast to a position near Nantucket late in the day. Eventually low pressure moved into the Gulf of Maine on December 17th and continued towards Nova Scotia. Despite a climatologically favorable track for significant snowfall, the antecedent near surface air mass was marginal for snow south of the mountains. Temperatures aloft were cool and supportive of snow, but rain mixed in south of the foothills.  Due to the heavy wet snow, significant power outages occurred across interior Maine with 80,000 outages reported.  Oxford, Franklin and Somerset Counties were impacted the hardest.  There was a significant upslope and elevation component to snowfall totals when precipitation finally came to an end on the 17th.

Winter Storm in INTERIOR CUMBERLAND HIGHLANDS, MAINE
From 16-DEC-22 08:00:00 to 17-DEC-22 12:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the western Maine Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off midday on the 17th. Snowfall totals ranged from 6 inches near Sebago Lake to 18 inches near Pleasant Mountain.

Winter Storm in NORTHERN FRANKLIN, MAINE
From 16-DEC-22 11:00:00 to 17-DEC-22 14:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the western Maine Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off during the afternoon of the 17th as upslope enhanced snow showers. Snowfall totals ranged from 18 to 24 inches.

Winter Storm in SOUTHERN SOMERSET, MAINE
From 16-DEC-22 12:00:00 to 17-DEC-22 15:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th, with snow in the higher elevations and a mix of rain and snow in the valleys. Steady moderate to occasionally heavy snow began in the evening on the 16th. Precipitation tapered off during the afternoon of the 17th as upslope enhanced snow showers. Snowfall totals ranged from 6 inches near I-95 to 20 inches near the Bigelow Preserve.

Winter Storm in INTERIOR WALDO, MAINE
From 16-DEC-22 12:00:00 to 17-DEC-22 15:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th, mainly as a mix of mostly rain and some snow. Steady moderate snow began in the evening on the 16th and began accumulating, especially away from the coast. Precipitation tapered off during the afternoon of the 17th. Snowfall totals ranged from 6 to 12 inches.

Winter Storm in KENNEBEC, MAINE
From 16-DEC-22 11:00:00 to 17-DEC-22 15:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th, mainly as a mix of mostly rain and some snow. Steady moderate snow began in the evening on the 16th and began accumulating, first in the Belgrade Lakes region before reaching the lower Kennebec River Valley. Precipitation tapered off during the afternoon of the 17th. Snowfall totals ranged from 4 inches near Gardiner to 16 inches near Vienna.

Winter Storm in ANDROSCOGGIN, MAINE
From 16-DEC-22 09:00:00 to 17-DEC-22 12:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th, mainly as a mix of mostly rain and some snow. Steady moderate snow began in the evening on the 16th and began accumulating, first in the Livermore area before eventually reaching areas south of I-95. Precipitation tapered off midday on the 17th. Snowfall totals ranged from 6 inches near Durham to 16 inches near Livermore.

Winter Storm in NORTHERN OXFORD, MAINE
From 16-DEC-22 09:00:00 to 17-DEC-22 08:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the western Maine Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off during the morning of the 17th as upslope enhanced snow showers. Snowfall totals ranged from 18 to 24 inches.

Winter Storm in SOUTHERN OXFORD, MAINE
From 16-DEC-22 08:00:00 to 17-DEC-22 12:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the western Maine Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off midday on the 17th as upslope enhanced snow showers. Snowfall totals ranged from 12 to 24 inches.

Winter Storm in INTERIOR YORK, MAINE
From 16-DEC-22 07:00:00 to 17-DEC-22 05:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th, mainly as a mix of mostly rain and some snow. Steady moderate snow began in the evening on the 16th and began accumulating, first near the New Hampshire border before eventually reaching areas around I-95. Precipitation tapered off early in the morning on the 17th. Snowfall totals ranged from 5 inches near Buxton to 12 inches north of Shapleigh.

Winter Storm in CENTRAL INTERIOR CUMBERLAND, MAINE
From 16-DEC-22 08:00:00 to 17-DEC-22 12:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th, mainly as a mix of mostly rain and some snow. Steady moderate snow began in the evening on the 16th and began accumulating, first in the areas north of Sebago Lake before eventually reaching areas around I-95. Precipitation tapered off midday on the 17th. Snowfall totals ranged from 4 inches near the Lower Bay of Sebago Lake to 12 inches near Casco.

Winter Storm in SOUTHERN FRANKLIN, MAINE
From 16-DEC-22 11:00:00 to 17-DEC-22 15:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the western Maine Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off during the afternoon of the 17th as upslope enhanced snow showers. Snowfall totals ranged from 18 to 24 inches.

Winter Storm in CENTRAL SOMERSET, MAINE
From 16-DEC-22 12:00:00 to 17-DEC-22 15:00:00 (EST-5)
Reported by: Trained Spotter

Light precipitation began on the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the western Maine Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off during the afternoon of the 17th as upslope enhanced snow showers. Snowfall totals ranged from 16 to 20 inches.