Winter Storm — Northern Coos, New Hampshire

2022-02-03 to 2022-02-04 · Northern Coos, New Hampshire

Event narrative

Rain changed to snow around 3:00 pm on the 3rd. During the late evening the snow intensity increased and remained moderate at times through daybreak on the 4th. Steady snow continued through the day and tapered off in the evening. Snowfall amounts ranged from 9 to 13 inches.

Wider weather episode

Broad southwest flow and a mild February air mass was in place across the region on the 3rd. As a very slow moving cold front approached New England precipitation overspread the area. Given how warm temperatures were, precipitation started as rain. As high pressure built into Quebec through midnight the northern end of the cold front accelerated southward through New England. Rain changed to snow from north to south. A weak wave of low pressure formed and rode northeast along the boundary. This enhanced precipitation during the morning of the 4th. Precipitation ended as snow for all areas during the evening of the 4th.

Source: NOAA Storm Events Database, event_id 1004647. Narrative written by the NWS forecast office that issued the report.