This winter storm began as a blizzard over the Midwest. The storm moved into the eastern Great Lakes early on the 26th and snow broke out over northern New England that afternoon and evening. Secondary low pressure developed in the vicinity of Cape Cod on the evening of the 26th helping to ensure cooler air remained trapped across much of New Hampshire. Surface temperatures hovered within a couple degrees of freezing, but aloft temperatures were much colder. As a result snowfall was heavy and wet, and very dependent on elevation. While lower elevations mixed at times with sleet, freezing rain, and rain, the higher terrain remained predominantly snow and significant accumulations occurred. Low pressure slowed to a crawl on the 27th and snow continued into the 28th, although the bulk of the accumulation was from the evening of the 26th to the afternoon of the 27th.

Heavy Snow in NORTHERN COOS, NEW HAMPSHIRE
From 26-NOV-18 23:00:00 to 27-NOV-18 17:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Steady snow began on the evening of the 26th. Southeast flow downsloping off the White Mountains delayed significant snowfall accumulation for much of the early part of the event. Light accumulations occurred through the morning of the 27th. Once flow became westerly and upslope enhanced snowfall began accumulations began to pile up quickly north of the notches. Total snowfall ranged from 6 to 12 inches, though additional accumulation continued in upslope snow showers into the 28th.

Heavy Snow in SOUTHERN COOS, NEW HAMPSHIRE
From 26-NOV-18 22:00:00 to 27-NOV-18 17:00:00 (EST-5)
Reported by: Trained Spotter

Steady snow began late on the evening of the 26th. Orographic lift of southeast flow into the White Mountains allowed snow to be heavy at times early on the 27th. Significant accumulations occurred in the higher terrain and south facing slopes, while much lighter accumulations occurred near the Connecticut River. Once flow became westerly and upslope enhanced snowfall began accumulations near the river began to catch up to those in the mountains. Total snowfall ranged from 6 inches to a foot or more in the higher elevations, though additional accumulation continued in upslope snow showers into the 28th.

Heavy Snow in NORTHERN GRAFTON, NEW HAMPSHIRE
From 26-NOV-18 22:00:00 to 27-NOV-18 17:00:00 (EST-5)
Reported by: Trained Spotter

Steady snow began late on the evening of the 26th. Orographic lift of southeast flow into the White Mountains allowed snow to be heavy at times early on the 27th. Significant accumulations occurred in the higher terrain and south facing slopes, while much lighter accumulations occurred near the Connecticut River. Once flow became westerly and upslope enhanced snowfall began accumulations near the river began to catch up to those in the mountains.  Surface temperatures near freezing made for a heavy, wet snow and scattered power outages due to downed tree limbs. Total snowfall ranged from 6 inches to a foot or more in the higher elevations, though additional accumulation continued in upslope snow showers into the 28th.

Heavy Snow in NORTHERN CARROLL, NEW HAMPSHIRE
From 26-NOV-18 18:00:00 to 27-NOV-18 17:00:00 (EST-5)
Reported by: Trained Spotter

Steady snow began on the evening of the 26th. Orographic lift of southeast flow into the White Mountains allowed snow to be heavy at times early on the 27th. Significant accumulations occurred in the higher terrain and south facing slopes, while lighter accumulations occurred at lower elevations. Surface temperatures near freezing made for a heavy, wet snow and scattered power outages due to downed tree limbs. Total snowfall ranged from 6 inches to a foot or more in the higher elevations.

Heavy Snow in SOUTHERN CARROLL, NEW HAMPSHIRE
From 26-NOV-18 18:00:00 to 27-NOV-18 17:00:00 (EST-5)
Reported by: Trained Spotter

Steady snow began on the evening of the 26th. Orographic lift of southeast flow into the White Mountains allowed snow to be heavy at times starting late that evening. Significant accumulations occurred in the higher terrain and south facing slopes, while lighter accumulations occurred at lower elevations. Surface temperatures near freezing made for a heavy, wet snow and scattered power outages due to downed tree limbs. Total snowfall ranged from 6 inches to a foot or more in the higher elevations.

Heavy Snow in SOUTHERN GRAFTON, NEW HAMPSHIRE
From 26-NOV-18 18:00:00 to 27-NOV-18 15:00:00 (EST-5)
Reported by: Trained Spotter

Steady snow began on the evening of the 26th. Orographic lift of southeast flow into the White Mountains allowed snow to be heavy at times starting late that evening. Significant accumulations occurred in the higher terrain and south facing slopes, while lighter accumulations occurred at lower elevations. Surface temperatures near freezing made for a heavy, wet snow and scattered power outages due to downed tree limbs. Total snowfall ranged from 6 inches to a foot or more in the higher elevations. Trained spotters reported totals around 5 inches at 580 feet elevation with more than 15 inches at 1400 feet along the same road near Newfound Lake.

Heavy Snow in SULLIVAN, NEW HAMPSHIRE
From 26-NOV-18 17:00:00 to 27-NOV-18 12:00:00 (EST-5)
Reported by: Trained Spotter

Steady snow began on the evening of the 26th. Orographic lift of southeast flow into the higher elevations allowed snow to be heavy at times early on the 27th. Significant accumulations occurred in the higher terrain and south facing slopes, while lighter accumulations occurred at lower elevations. Surface temperatures near freezing made for a heavy, wet snow and scattered power outages due to downed tree limbs. Total snowfall ranged from 6 inches to a foot or more in the higher elevations.