Low pressure west of the Appalachian Mountains on the 23rd underwent secondary development along a baroclinic zone lingering off the Mid Atlantic coast. That secondary area of low pressure steadily deepened as it moved northeastward into the Gulf of Maine by the 24th. Mid level low centers developed in a location that ensured that warm air struggled to get very far north and prevented most of the mixed precipitation potential. That and a cool and dry antecedent air mass meant that the predominate precipitation type was snow across most of New Hampshire.

Winter Storm in NORTHERN CARROLL, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 24-MAR-20 00:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the White Mountains during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snow tapered off quickly around midnight. Total snowfall ranged from 6 to 8 inches.

Winter Storm in SULLIVAN, NEW HAMPSHIRE
From 23-MAR-20 15:00:00 to 23-MAR-20 23:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the Connecticut River Valley during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snowfall rates approached one inch per hour at times in the evening, before tapering off quickly around midnight. Total snowfall ranged from 5 to 7 inches.

Winter Storm in CHESHIRE, NEW HAMPSHIRE
From 23-MAR-20 14:00:00 to 23-MAR-20 23:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the Connecticut River Valley during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snowfall rates approached one inch per hour at times in the evening, before tapering off quickly around midnight. Total snowfall ranged from 5 to 8 inches.

Winter Storm in MERRIMACK, NEW HAMPSHIRE
From 23-MAR-20 15:00:00 to 24-MAR-20 01:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the central New Hampshire during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snowfall rates approached one inch per hour at times in the evening, before tapering off quickly around midnight. Total snowfall ranged from 5 to 8 inches.

Winter Storm in BELKNAP, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 24-MAR-20 01:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the Lakes Region during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snowfall rates approached one inch per hour at times in the evening, before tapering off quickly around midnight. Total snowfall ranged from 5 to 7 inches.

Winter Storm in EASTERN HILLSBOROUGH, NEW HAMPSHIRE
From 23-MAR-20 15:00:00 to 24-MAR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into Nashua and Manchester during the afternoon on the 23rd and quickly became moderate to heavy. While forcing was driven primarily by warm air advection, a band of heavy snow developed northwest of the low center and did manage to lift into the area. This extended the duration of snow in addition to producing snowfall rates of one inch per hour at times in the evening. Snow tapered off quickly after midnight. Total snowfall ranged from 6 to 7 inches.

Winter Storm in INTERIOR ROCKINGHAM, NEW HAMPSHIRE
From 23-MAR-20 15:00:00 to 24-MAR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into southeastern New Hampshire during the afternoon on the 23rd and quickly became moderate to heavy. While forcing was driven primarily by warm air advection, a band of heavy snow developed northwest of the low center and did manage to lift into the area. This extended the duration of snow in addition to producing snowfall rates of one inch per hour at times in the evening. Snow tapered off quickly after midnight. Total snowfall ranged from 5 to 8 inches.

Winter Storm in STRAFFORD, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 24-MAR-20 02:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into southeastern New Hampshire during the afternoon on the 23rd and quickly became moderate to heavy. While forcing was driven primarily by warm air advection, a band of heavy snow developed northwest of the low center and did manage to lift into the area. This extended the duration of snow in addition to producing snowfall rates of one inch per hour at times in the evening. Snow tapered off quickly after midnight. Total snowfall ranged from 6 to 7 inches.

Winter Storm in SOUTHERN GRAFTON, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 23-MAR-20 23:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the White Mountains during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snowfall rates approached one inch per hour at times in the evening, before tapering off quickly around midnight. Total snowfall ranged from 6 to 8 inches.

Winter Storm in SOUTHERN CARROLL, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 24-MAR-20 01:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the White Mountains during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snowfall rates approached one inch per hour at times in the evening, before tapering off quickly around midnight. Total snowfall ranged from 6 to 8 inches.

Winter Storm in WESTERN AND CENTRAL HILLSBOROUGH, NEW HAMPSHIRE
From 23-MAR-20 15:00:00 to 24-MAR-20 01:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the Monadnock region during the afternoon on the 23rd and quickly became moderate to heavy. While forcing was driven primarily by warm air advection, a band of heavy snow developed northwest of the low center and did manage to lift into the area. This extended the duration of snow in addition to producing snowfall rates of one inch per hour at times in the evening. Snow tapered off quickly after midnight. Total snowfall ranged from 6 to 8 inches, with locally higher amounts around 10 inches in the Monadnocks.

Winter Storm in SOUTHERN COOS, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 24-MAR-20 00:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the White Mountains during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snow tapered off quickly around midnight. Total snowfall ranged from 8 to 11 inches.

Winter Storm in NORTHERN GRAFTON, NEW HAMPSHIRE
From 23-MAR-20 16:00:00 to 23-MAR-20 23:00:00 (EST-5)
Reported by: Trained Spotter

Snow moved into the White Mountains during the afternoon on the 23rd and quickly became moderate to heavy. Forcing was driven primarily by warm air advection and banding near the low center never made it far enough northwest to affect the area, and so came to an end in less than 12 hours. Snow tapered off quickly around midnight. Total snowfall ranged from 6 to 9 inches.