Heavy Snow in Northern Coos, New Hampshire

Snow overspread the North Country of New Hampshire early on the morning of the 13th. Snow gradually increased in intensity, becoming moderate for a stretch from near sunrise to mid-morning. Steady snow began to taper off in the early afternoon, though upslope snow showers lingered into the evening.

A rapidly developing low pressure formed off the Mid Atlantic coast and tracked through southern New England. Forcing resulted from an open wave aloft, which limited intensity and duration of precipitation. Despite a track near the coast, a seasonably cold antecedent air mass allowed precipitation to begin as snow before mixing with and changing to rain at the coast into the Lakes Region. Precipitation stayed mainly snow in the mountains.