Early on the 3rd a stalled frontal boundary was draped across southern New Hampshire and near the coast of Maine. Low pressure slowly developed along the southern end of the front and rode north along the Appalachians through the day on the 3rd. Low pressure occluded during the evening on the 3rd, with a secondary low pressure developing south of Nantucket. The bulk of the precipitation came with the initial push of warm air advection, winding down early in the morning on the 4th. However an inverted trough hanging back to the northwest of the low center extended light snow through much of the day on the 4th.

Winter Storm in SOUTHERN FRANKLIN, MAINE
From 03-DEC-23 13:00:00 to 04-DEC-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began around midday on the 3rd as mostly snow with colder surface air locked in the interior. Upsloping easterly flow allowed the heaviest snow to fall through the higher terrain. Eventually steady snow tapered to light snow and snow showers, which continued into the afternoon on the 4th. Snowfall totals ranged from 8 to 12 inches.

Winter Storm in SOUTHERN SOMERSET, MAINE
From 03-DEC-23 13:00:00 to 04-DEC-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began around midday on the 3rd as mostly snow with colder surface air locked in the interior. Some marginal surface temperatures in the Kennebec River Valley kept snowfall totals slightly lower than surrounding areas. Eventually steady snow tapered to light snow and snow showers, which continued into the afternoon on the 4th. Snowfall totals ranged from 6 to 12 inches.

Winter Storm in ANDROSCOGGIN, MAINE
From 03-DEC-23 21:00:00 to 04-DEC-23 10:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began during the afternoon on the 3rd as a wintry mix of rain and snow as a warm front had lifted up into the foothills. Cold air damming held in place and as precipitation intensity increased the temperatures cooled even further. By early evening rain was changing to snow as far south as Durham. This led to a large range in snowfall totals from the higher terrain in the north to the lower elevations in the south. As winds become northwesterly during the morning of the 4th, snow tapered to snow showers and came to an end. Snowfall totals ranged from 4 inches near Durham to 10 inches near Mechanic Falls.

Winter Storm in KENNEBEC, MAINE
From 03-DEC-23 20:00:00 to 04-DEC-23 11:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began during the afternoon on the 3rd as a wintry mix of rain and snow as a warm front had lifted up into the foothills. Cold air damming held in place and as precipitation intensity increased the temperatures cooled even further. By early evening rain was changing to snow as far south as the lower parts of the Kennebec River Valley. This led to a large range in snowfall totals from the higher terrain of the Belgrade Lakes to the lower elevations in the south. As winds become northwesterly during the morning of the 4th, snow tapered to snow showers and came to an end. Snowfall totals ranged from 5 inches near Gardiner to 10 inches near Rome and Vienna.

Winter Storm in INTERIOR WALDO, MAINE
From 03-DEC-23 20:00:00 to 04-DEC-23 11:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began during the afternoon on the 3rd as a wintry mix of rain and snow as a warm front had lifted up into the foothills. Cold air damming held in place across the interior, and as precipitation intensity increased the temperatures cooled as far south as the hills of Waldo County. By early evening rain was changing to snow. This led to a large range in snowfall totals from the higher terrain to the lower elevations near Penobscot Bay. As winds become northwesterly during the morning of the 4th, snow tapered to snow showers and came to an end. Snowfall totals ranged from 4 inches near Penobscot Bay to 9 inches near Unity Pond.

Winter Storm in NORTHERN OXFORD, MAINE
From 03-DEC-23 12:00:00 to 04-DEC-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began around midday on the 3rd as mostly snow with colder surface air locked in the interior. Upsloping easterly flow allowed the heaviest snow to fall through the Mahoosucs. Eventually steady snow tapered to upslope snow showers, which continued for most of the day on the 4th. Snowfall totals ranged from 8 to 12 inches.

Winter Storm in SOUTHERN OXFORD, MAINE
From 03-DEC-23 12:00:00 to 04-DEC-23 09:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began around midday on the 3rd as a wintry mix of rain and snow as a warm front had lifted right up to the foothills. East facing aspects of the higher terrain had upsloping flow and relatively cooler temperatures to go along with the added lift, which allowed precipitation type to remain mostly snow. This led to a large range in snowfall totals from the higher terrain near the Mahoosucs to the Lakes Region. As winds become northwesterly during the morning of the 4th, snow tapered to snow showers and came to an end. Snowfall totals ranged from 5 inches near Bridgton to 10 inches in the mountains.

Winter Storm in NORTHERN FRANKLIN, MAINE
From 03-DEC-23 13:00:00 to 04-DEC-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began around midday on the 3rd as mostly snow with colder surface air locked in the interior. Upsloping easterly flow allowed the heaviest snow to fall through the Rangeley-Stratton Range. Eventually steady snow tapered to upslope snow showers, which continued for most of the day on the 4th. Snowfall totals ranged from 8 to 12 inches.

Winter Storm in CENTRAL SOMERSET, MAINE
From 03-DEC-23 13:00:00 to 04-DEC-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Precipitation began around midday on the 3rd as mostly snow with colder surface air locked in the interior. Upsloping easterly flow allowed the heaviest snow to fall through the Boundary Range. Eventually steady snow tapered to upslope snow showers, which continued for most of the day on the 4th. Snowfall totals ranged from 8 to 12 inches.