Low pressure moved into the Ohio Valley on the 31st, where it began to encounter resistance from high pressure anchored over James Bay. As the upper trough continued east, secondary low pressure began to develop along the warm front near the Outer Banks. This new low pressure center deepened and quickly occluded south of Long Island by midday on the 1st. It meandered south of Long Island into the morning of the 2nd before finally moving northeastward into the Gulf of Maine during the latter half of the day. During the occlusion phase a strong, pivoting mesoscale band of heavy snow impacted parts of the Mid Atlantic, while the northeastern extension of the band remained rather progressive lifting through New England. The heavy snow ended early on the 2nd but snow and sleet continued through the day for much of the northern half of New Hampshire. Precipitation tapered off late on the 2nd. Key Impacts: transportation delays, traffic accidents, heavy snow.

Winter Storm in CHESHIRE, NEW HAMPSHIRE
From 01-FEB-21 16:00:00 to 02-FEB-21 13:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snowfall rates were 1 inch per hour at times, and the band moved slower through southwest New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 8 to 12 inches.

Winter Storm in WESTERN AND CENTRAL HILLSBOROUGH, NEW HAMPSHIRE
From 01-FEB-21 16:00:00 to 02-FEB-21 13:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snowfall rates were 1 inch per hour at times, and the band moved slower through southwest New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 8 to 12 inches.

Winter Storm in EASTERN HILLSBOROUGH, NEW HAMPSHIRE
From 01-FEB-21 16:00:00 to 02-FEB-21 13:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snowfall rates were 1 inch per hour at times, and the band moved slower through southwest New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 7 to 11 inches.

Winter Storm in INTERIOR ROCKINGHAM, NEW HAMPSHIRE
From 01-FEB-21 16:00:00 to 02-FEB-21 13:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snowfall rates were 1 inch per hour at times, and the band moved slower through southeast New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 8 to 14 inches.

Winter Storm in COASTAL ROCKINGHAM, NEW HAMPSHIRE
From 01-FEB-21 16:00:00 to 02-FEB-21 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snowfall rates were 1 inch per hour at times, and the band moved slower through the Seacoast. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 8 to 12 inches.

Winter Storm in NORTHERN CARROLL, NEW HAMPSHIRE
From 01-FEB-21 22:00:00 to 02-FEB-21 20:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through the White Mountains. Snow continued into the afternoon before ending from the southwest. Snowfall ranged from 8 to 15 inches.

Winter Storm in SOUTHERN CARROLL, NEW HAMPSHIRE
From 01-FEB-21 20:00:00 to 02-FEB-21 18:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snow continued into the afternoon before ending from the southwest. Snowfall ranged from 6 to 12 inches.

Winter Storm in NORTHERN GRAFTON, NEW HAMPSHIRE
From 01-FEB-21 22:00:00 to 02-FEB-21 20:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through the White Mountains. Snow continued into the evening in waves as additional moisture was pulled inland from the Gulf of Maine and forced over the higher terrain. Snowfall ranged from 4 to 12 inches, with the lowest amounts in the Pemigewasset Valley where persistent banding remaining south and downsloping helped to cut down totals.

Winter Storm in BELKNAP, NEW HAMPSHIRE
From 01-FEB-21 19:00:00 to 02-FEB-21 16:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through the Lakes Region. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 5 to 8 inches, with the lowest amounts in the Pemigewasset Valley where persistent banding remaining south and downsloping helped to cut down totals.

Winter Storm in SULLIVAN, NEW HAMPSHIRE
From 01-FEB-21 18:00:00 to 02-FEB-21 13:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 7 to 12 inches.

Winter Storm in MERRIMACK, NEW HAMPSHIRE
From 01-FEB-21 18:00:00 to 02-FEB-21 13:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 6 to 9 inches.

Winter Storm in STRAFFORD, NEW HAMPSHIRE
From 01-FEB-21 18:00:00 to 02-FEB-21 16:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 6 to 9 inches.

Winter Storm in SOUTHERN GRAFTON, NEW HAMPSHIRE
From 01-FEB-21 21:00:00 to 02-FEB-21 15:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area on the evening of the 1st and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through New Hampshire. Snow continued into the afternoon before ending quickly from the southwest. Snowfall ranged from 3 to 10 inches, with the lowest amounts in the Pemigewasset Valley where persistent banding remaining south and downsloping helped to cut down totals.

Winter Storm in NORTHERN COOS, NEW HAMPSHIRE
From 02-FEB-21 02:00:00 to 02-FEB-21 21:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area just after midnight and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through the White Mountains. Snow continued into the evening in waves as additional moisture was pulled inland from the Gulf of Maine and forced over the higher terrain. Snowfall ranged from 5 to 10 inches, with the highest amounts in the White Mountains and the lowest near the Connecticut River where downsloping lowered totals.

Winter Storm in SOUTHERN COOS, NEW HAMPSHIRE
From 02-FEB-21 00:00:00 to 02-FEB-21 21:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the area around midnight and continued through the morning hours on the 2nd. The bulk of the accumulation came with moderate to heavy snow in the mesoscale snow band as it moved north through the White Mountains. Snow continued into the evening in waves as additional moisture was pulled inland from the Gulf of Maine and forced over the higher terrain. Snowfall totals ranged from 5 to 12 inches, with the lowest amounts immediately in the lee of the White Mountains.