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 coastal 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.  The snow transitioned to a band that paralleled the east to northeast storm track. Late on the 4th the low pressure system pulled east to northeast into the northwest Atlantic.

Winter Storm in NORTHERN COOS, NEW HAMPSHIRE
From 04-MAR-23 01:00:00 to 04-MAR-23 22:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the North Country 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 6 inches near the Connecticut River to 10 inches near the Maine border.

Winter Storm in SOUTHERN COOS, NEW HAMPSHIRE
From 04-MAR-23 01:00:00 to 04-MAR-23 22:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the North Country 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 6 inches near the Connecticut River to 14 inches near the Maine border.

Winter Storm in NORTHERN GRAFTON, NEW HAMPSHIRE
From 04-MAR-23 00:00:00 to 04-MAR-23 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the White Mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours, except where downsloping winds helped evaporate falling snow. As low pressure moved into the Gulf of Maine, flow become more northwesterly and snow tapered to upslope snow showers before ending in the evening. Snowfall totals ranged from 4 inches near the Connecticut River to 10 inches in the mountains.

Winter Storm in NORTHERN CARROLL, NEW HAMPSHIRE
From 04-MAR-23 02:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the White Mountains shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours, aided by winds upsloping into the higher terrain. 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 White Mountains. Snowfall totals ranged from 10 to 14 inches.

Winter Storm in SOUTHERN CARROLL, NEW HAMPSHIRE
From 04-MAR-23 02:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread portions of the Lakes Region shortly after midnight, early on the morning of the 4th. Snowfall quickly became moderate to heavy through the early afternoon hours, aided by winds upsloping into the higher terrain. 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 White Mountains. Snowfall totals ranged from 11 to 16 inches.

Winter Storm in SOUTHERN GRAFTON, NEW HAMPSHIRE
From 03-MAR-23 23:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread portions of the Upper Valley around midnight, late on the 3rd. Snowfall quickly became moderate to heavy through the early afternoon hours. As low pressure moved into the Gulf of Maine, flow become more northwesterly and snow tapered to upslope snow showers before ending in the evening.  Snowfall totals ranged from 6 to 10 inches.

Winter Storm in BELKNAP, NEW HAMPSHIRE
From 04-MAR-23 01:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Lakes Region shortly after midnight, early one 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 White Mountains. Snowfall totals ranged from 9 to 13 inches.

Winter Storm in MERRIMACK, NEW HAMPSHIRE
From 04-MAR-23 00:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread central New Hampshire shortly after midnight, early one 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 Gulf of Maine and flow become more northwesterly, downsloping off the White Mountains. Snowfall totals ranged from 9 to 12 inches.

Winter Storm in SULLIVAN, NEW HAMPSHIRE
From 03-MAR-23 23:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread portions of the Upper Valley around midnight, late on the 3rd. Snowfall quickly became moderate to heavy through the early afternoon hours. As low pressure moved into the Gulf of Maine, flow become more northwesterly and snow tapered to upslope snow showers before ending in the evening. Snowfall totals ranged from 9 to 14 inches.

Winter Storm in CHESHIRE, NEW HAMPSHIRE
From 03-MAR-23 23:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Monadnock Region around midnight, late on the 3rd. Snowfall quickly became moderate to heavy through the early afternoon hours. As low pressure moved into the Gulf of Maine, Atlantic flow become more northwesterly and snow quickly came to an end. Snowfall totals ranged from 5 to 9 inches.

Winter Storm in WESTERN AND CENTRAL HILLSBOROUGH, NEW HAMPSHIRE
From 04-MAR-23 00:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Monadnock Region around midnight, late on the 3rd. 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 quickly came to an end. Snowfall totals ranged from 6 to 10 inches.

Winter Storm in EASTERN HILLSBOROUGH, NEW HAMPSHIRE
From 04-MAR-23 00:00:00 to 04-MAR-23 14:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread the Merrimack River Valley around midnight, late on the 3rd. 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 quickly came to an end. Snowfall totals ranged from 6 to 10 inches.

Winter Storm in STRAFFORD, NEW HAMPSHIRE
From 04-MAR-23 02:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread portions of southeast New Hampshire shortly after midnight, early one 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 White Mountains. Snowfall totals ranged from 6 to 11 inches.

Winter Storm in INTERIOR ROCKINGHAM, NEW HAMPSHIRE
From 04-MAR-23 01:00:00 to 04-MAR-23 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow overspread portions of southeast New Hampshire shortly after midnight, early one 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 White Mountains. Snowfall totals ranged from 5 to 9 inches.