An area of low pressure developed off the Delmarva peninsula on Monday, January 26th,  and intensified rapidly as it moved slowly northward through the 27th.  Snow spread northward across the region Monday night and became heavy on Tuesday, the 27th.   Winds became strong during the day Tuesday leading to blizzard conditions at times along and inland from the coast.  The snow persisted into Tuesday night in many areas with blowing and drifting snow.   Along the coast, large waves combined with a storm surge produced coastal flooding and splash over.  In Hampton, the Tuesday morning tide was 1.43 feet above flood levels (see graph below), inundating many streets on the bay side of town.
Snowfall amounts ranged from 10 to more than 30 inches across much of the southeastern part of the state.  Elsewhere, amounts were generally 6 to 14 inches with some lower amounts in the Connecticut River Valley.

Winter Storm in EASTERN HILLSBOROUGH, NEW HAMPSHIRE
From 27-JAN-15 12:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Once blizzard conditions subsided, snow and blowing snow continued into the early morning hours of the 28th.

Blizzard in EASTERN HILLSBOROUGH, NEW HAMPSHIRE
From 27-JAN-15 06:00:00 to 27-JAN-15 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Blizzard in COASTAL ROCKINGHAM, NEW HAMPSHIRE
From 27-JAN-15 06:00:00 to 27-JAN-15 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heavy Snow in CHESHIRE, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in MERRIMACK, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in NORTHERN CARROLL, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in NORTHERN GRAFTON, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in SOUTHERN GRAFTON, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in SOUTHERN CARROLL, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Blizzard in INTERIOR ROCKINGHAM, NEW HAMPSHIRE
From 27-JAN-15 06:00:00 to 27-JAN-15 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Winter Storm in STRAFFORD, NEW HAMPSHIRE
From 27-JAN-15 12:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Once blizzard conditions subsided, snow and blowing snow continued into the early morning hours of the 28th.

Heavy Snow in NORTHERN COOS, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in COASTAL ROCKINGHAM, NEW HAMPSHIRE
From 27-JAN-15 12:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Once blizzard conditions subsided, snow and blowing snow continued into the early morning hours of the 28th.

Blizzard in STRAFFORD, NEW HAMPSHIRE
From 27-JAN-15 06:00:00 to 27-JAN-15 12:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heavy Snow in BELKNAP, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in SULLIVAN, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winter Storm in INTERIOR ROCKINGHAM, NEW HAMPSHIRE
From 27-JAN-15 12:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Once blizzard conditions subsided, snow and blowing snow continued into the early morning hours of the 28th.

Heavy Snow in WESTERN AND CENTRAL HILLSBOROUGH, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Snow in SOUTHERN COOS, NEW HAMPSHIRE
From 26-JAN-15 20:00:00 to 28-JAN-15 04:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter