Weather
Virginia Snow: Richmond, Roanoke Could See 20 Inches From 1
Richmond, VA – Winter storms across Virginia can produce dramatically different snowfall totals, even when communities receive nearly identical amounts of moisture. From Richmond to Roanoke, just 1 in
By Audrey Sloan · 2026-11-10T07:33:28.852Z
Richmond, VA – Winter storms across Virginia can produce dramatically different snowfall totals, even when communities receive nearly identical amounts of moisture. From Richmond to Roanoke, just 1 inch of liquid precipitation can sometimes produce as little as 5 inches of heavy, wet snow or as much as 20 inches of lighter, fluffier snow.
The difference comes down to the snow to liquid ratio, a measurement that helps explain why snowfall accumulations can vary significantly during winter storms.
Why One Inch Can Produce 20 Inches of Snow
A commonly used forecasting guideline is the 10 to 1 ratio, meaning 1 inch of liquid water produces approximately 10 inches of snow.
However, actual snowfall ratios can vary considerably depending on atmospheric conditions.
Heavy, wet snow may have a ratio near 5 to 1, producing approximately 5 inches from 1 inch of liquid precipitation.
Colder, fluffier snow can sometimes reach a 20 to 1 ratio, producing approximately 20 inches from the same amount of moisture.
Richmond and Roanoke: Why Snowfall Can Differ
Richmond's lower elevation and location in eastern Virginia can expose the city to relatively warmer air during certain winter storms, increasing the potential for rain, mixed precipitation or wetter snow.
Roanoke, located in southwestern Virginia near the Blue Ridge Mountains, can experience different temperature patterns influenced by elevation and surrounding terrain.
During some storms, higher elevations around Roanoke may receive accumulating snow while Richmond experiences rain or a wintry mixture.
However, storm tracks, wind direction and atmospheric temperatures ultimately determine where the greatest snowfall develops.
What Virginia Residents Should Know
Wet, heavy snow can place additional stress on trees, power lines and rooftops, potentially increasing the risk of damage and power outages.
Lighter, fluffier snow may accumulate more deeply while containing less water per inch.
These differences can also affect road conditions along Interstate 64, Interstate 81 and Interstate 95, particularly when temperatures hover near freezing.
Understanding snow to liquid ratios helps explain why snowfall forecasts sometimes change even when expected precipitation amounts remain similar.
For Virginia residents, snowfall depth depends on more than how much moisture a storm brings. Temperature, wind and snow density can dramatically influence final accumulation totals.