Strong low pressure moved into the Ohio River Valley during the day on the 3rd. As it occluded, secondary low pressure began to develop near the Virginia Tidewater along the warm front. The secondary low pressure became dominant early on the 4th, and slowed down as it paralleled the southern New England coastline.  Snow was quick to become moderate to heavy in strong warm air advection, eventually transitioning to a band of snow that paralleled the east to northeast storm track. Late on the 4th, low pressure pulled off to the northeast over the Canadian Maritimes.

Winter Storm in NORTHERN OXFORD, MAINE
From 04-MAR-23 02:00:00 to 04-MAR-23 22:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the western Maine mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. As low pressure moved into the northwest Atlantic flow become more northwesterly and snow tapered to upslope snow showers before ending in the evening. Snowfall totals ranged from 8 to 15 inches.

Winter Storm in NORTHERN FRANKLIN, MAINE
From 04-MAR-23 02:00:00 to 04-MAR-23 20:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the western Maine mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. As low pressure moved into the northwest Atlantic flow become more northwesterly and snow tapered to upslope snow showers before ending in the evening. Snowfall totals ranged from 8 to 13 inches.

Winter Storm in SOUTHERN OXFORD, MAINE
From 04-MAR-23 03:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the western Maine mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 12 to 15 inches.

Winter Storm in SOUTHERN FRANKLIN, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 17:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the western Maine mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 10 to 13 inches.

Winter Storm in INTERIOR CUMBERLAND HIGHLANDS, MAINE
From 04-MAR-23 03:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the western Maine mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 10 to 12 inches.

Winter Storm in INTERIOR YORK, MAINE
From 04-MAR-23 02:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread southwestern Maine shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 7 to 12 inches.

Winter Storm in CENTRAL INTERIOR CUMBERLAND, MAINE
From 04-MAR-23 03:00:00 to 04-MAR-23 16:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Maine Lakes Region early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 9 to 13 inches.

Winter Storm in ANDROSCOGGIN, MAINE
From 04-MAR-23 04:00:00 to 04-MAR-23 16:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Maine Lakes Region early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 12 to 16 inches.

Winter Storm in KENNEBEC, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Kennebec River Valley early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the evening as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 12 to 16 inches.

Winter Storm in SOUTHERN SOMERSET, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Kennebec River Valley early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the evening as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 6 to 12 inches.

Winter Storm in INTERIOR WALDO, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Midcoast early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the evening as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 8 to 12 inches.

Winter Storm in COASTAL WALDO, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Midcoast early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the evening as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 10 to 15 inches.

Winter Storm in KNOX, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Midcoast early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the evening as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 9 to 12 inches.

Winter Storm in LINCOLN, MAINE
From 04-MAR-23 05:00:00 to 04-MAR-23 17:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Midcoast early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the evening as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 10 to 14 inches.

Winter Storm in SAGADAHOC, MAINE
From 04-MAR-23 04:00:00 to 04-MAR-23 16:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Midcoast early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 10 to 14 inches.

Winter Storm in COASTAL CUMBERLAND, MAINE
From 04-MAR-23 03:00:00 to 04-MAR-23 16:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread Casco Bay early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 8 to 12 inches.

Winter Storm in COASTAL YORK, MAINE
From 04-MAR-23 02:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread southwestern Maine early on the morning of the 4th. Snowfall quickly became moderate to heavy at times through the early afternoon hours, though some mixing and wet snow occurred near Kittery. Snow quickly came to an end during the afternoon as low pressure moved into the northwest Atlantic and flow become more northwesterly, downsloping off the mountains. Snowfall totals ranged from 5 to 8 inches.