Weather
New Jersey Snow: Why 1 Inch Can Mean 20 in Newark, Trenton
Newark, NJ – Winter storms across New Jersey can produce surprising snowfall differences, even when communities receive nearly identical amounts of moisture. From Newark to Trenton, the same 1 inch of
By Miles Carter · 2026-11-10T07:33:08.625Z
Newark, NJ – Winter storms across New Jersey can produce surprising snowfall differences, even when communities receive nearly identical amounts of moisture. From Newark to Trenton, the same 1 inch of liquid precipitation can sometimes produce as little as 5 inches of wet snow or as much as 20 inches of lighter, fluffier snow.
The difference comes down to the snow to liquid ratio, a measurement used in winter forecasting to estimate how much snow can accumulate from a given amount of moisture.
Why One Inch Can Produce 20 Inches of Snow
A commonly used guideline is a 10 to 1 ratio, meaning 1 inch of liquid water produces approximately 10 inches of snow.
However, snow does not always follow that formula.
Heavy, wet snow may have a ratio closer to 5 to 1, producing approximately 5 inches from 1 inch of liquid precipitation.
Under colder atmospheric conditions favorable for fluffy snow, ratios can reach 20 to 1, producing approximately 20 inches from the same moisture.
Why Newark and Trenton Can See Different Totals
Newark's proximity to New York Harbor can expose the city to relatively warmer marine air during coastal storms.
Trenton, farther southwest along the Delaware River, can experience different temperature patterns depending on a storm's track.
A slight shift in the rain snow line can determine whether neighborhoods receive rain, heavy wet snow or lighter accumulations.
Higher elevations in northwestern New Jersey may also experience colder conditions that favor snow.
What This Means for New Jersey Residents
Wet snow can place additional weight on tree branches and power lines, increasing the potential for damage and outages.
Fluffier snow can accumulate more deeply and create visibility problems when strong winds develop.
Drivers using Interstate 78, Interstate 80 and the New Jersey Turnpike should remember that winter road conditions can vary considerably over short distances.
For New Jersey residents, snowfall totals depend on more than the moisture a storm carries. Temperature, wind and snowflake structure can dramatically change what reaches the ground.