Weather
West Virginia Snow: Why 1 Inch Can Mean 20 in Charleston, Morgantown
Charleston, WV – Winter storms across West Virginia can produce dramatically different snowfall totals, even when communities receive similar amounts of moisture. From Charleston to Morgantown, just 1
By Cameron Hayes · 2026-11-10T07:33:52.571Z
Charleston, WV – Winter storms across West Virginia can produce dramatically different snowfall totals, even when communities receive similar amounts of moisture. From Charleston to Morgantown, just 1 inch of liquid precipitation can sometimes produce 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, which measures how much snow accumulates from a given amount of liquid water.
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, snowfall does not always follow that formula.
Heavy, wet snow may have a ratio near 5 to 1, producing approximately 5 inches from 1 inch of liquid precipitation.
Under colder atmospheric conditions favorable for fluffy snow, ratios can sometimes reach 20 to 1, producing approximately 20 inches from the same amount of moisture.
Charleston and Morgantown: Why Snowfall Can Differ
Charleston's location in the Kanawha River Valley can create different temperature conditions from nearby higher elevations.
Morgantown, farther north near the Pennsylvania border, may experience colder conditions during certain winter weather patterns.
West Virginia's mountainous terrain adds another major factor.
When moist air rises over the Appalachian Mountains, it cools and can produce additional precipitation. This process, known as orographic lift, can contribute to heavier snowfall in favored mountain areas.
Higher elevations around Snowshoe and the Allegheny Mountains can experience substantially different winter conditions from lower valleys.
However, elevation alone does not determine snowfall. Storm tracks, wind direction and atmospheric temperatures remain important.
What West Virginia Residents Should Know
Heavy, wet snow can place additional stress on trees and power lines, increasing the potential for damage and outages.
Lighter snow can accumulate more deeply and create blowing snow when winds strengthen.
Mountain travel can become especially challenging along Interstate 64, Interstate 68 and Interstate 79, where elevation changes may create rapidly varying road conditions.
Understanding snow to liquid ratios helps explain why snowfall forecasts can change even when expected precipitation amounts remain similar.
For West Virginia residents, snowfall depth depends on more than moisture alone. Temperature, elevation, wind and snow density can dramatically influence final totals.