Winter Storm — Northern Carroll, New Hampshire

2022-12-16 to 2022-12-17 · Northern Carroll, New Hampshire

Event narrative

Light precipitation began early in the morning on the 16th. Steady moderate to occasionally heavy snow started relatively quickly after the onset, especially at higher elevations. Southeast flow upsloping into the White Mountains produced significantly more snowfall along the east facing slopes. Precipitation tapered off early on the morning of the 17th. Snowfall totals ranged from 12 to as much as 24 inches in the White Mountains.

Wider weather episode

On December 16th low pressure develop near Chesapeake Bay and slowly moved northeastward along the coast to a position near Nantucket late in the day. Eventually low pressure moved into the Gulf of Maine on December 17th and continued towards Nova Scotia. Despite a climatologically favorable track for significant snowfall, the antecedent near surface air mass was marginal for snow south of the mountains. Temperatures aloft were cool and supportive of snow, but rain mixed in south of the foothills. There was a significant upslope and elevation component to snowfall totals when precipitation finally came to an end on the 17th. Due to the heavy wet snow, significant power outages occurred across parts of New Hampshire with 50,000 outages reported.

Source: NOAA Storm Events Database, event_id 1065422. Narrative written by the NWS forecast office that issued the report.