Snowpack conditions in New Jersey vary across its mountain ranges, including the Kittatinny, Ramapo, and Watchung Mountains. These ranges provide much of the state's snowpack, which subsequently feeds into several important runoff rivers and watersheds. The Passaic, Raritan, and Delaware Rivers all receive snowmelt from these mountains, contributing to water supply and overall ecosystem health.

Winter climate characteristics in New Jersey include cold temperatures and regular snowfall, particularly in the mountainous regions. Average snowfall ranges from about 20 inches in the southern part of the state to over 50 inches in the higher elevations. However, snow accumulation can vary widely from year to year depending on weather patterns, making it challenging to predict exact conditions.

Interesting facts about snow science and history in New Jersey include the establishment of the first snow survey in the United States by Dr. Charles A. Smith in 1905 in Sussex County. This survey aimed to measure snow depth and water content to assess potential runoff and water supply. Additionally, the state experienced a significant blizzard in 1996 known as the "Blizzard of '96," which brought record-breaking snowfall and caused widespread transportation disruptions.