Winter Storm — Southern Carroll, New Hampshire

2025-12-23 to 2025-12-24 · Southern Carroll, New Hampshire

Event narrative

Snow overspread the area on the evening of the 23rd as a warm front approached northern New England. In the late evening stronger lift arrived and snow became moderate to heavy at times through the morning of the 24th. Light snow lingered until the afternoon before tapering off. Snowfall totals ranged from 5 to 7 inches.

Wider weather episode

On the 23rd a strong shortwave trough aloft crossed the Northeast from northwest to southeast. At the surface an inverted trough developed along this same trajectory, and winds converged along its axis. Cold temperatures aloft created a large difference between surface temperatures and mid level temperatures, enhancing the low level lift. The surface trough axis lingered just north of Casco Bay for most of the overnight into the 24th before weakening and drifting south. Moderate to heavy snow was persistent within and near the surface trough, with lighter snows outside of that area. Snow became lighter through midday as forcing for ascent weakened and moved away. Key Messages: heavy snow, traffic accidents.

Source: NOAA Storm Events Database, event_id 1299644. Narrative written by the NWS forecast office that issued the report.