Day 1 – Snow Ratios

You often hear as talk about snow ratios when a snowfall event is expected. But what exactly does it mean? Ratios deal with how many inches of snow would equal one inch of rain.

Example: The typical overall snowfall ratio is ten inches of snow for one inch of water equivalent. However, if we have colder air in place, we can see the ratios “fluffed” up a bit, which means a drier snow and higher ratios (i.e. 15:1). However, if we have higher moisture content available, that’s what makes for a “wet” snow, and lower ratios (i.e. 7:1).

NOTE: The typical snow ratio in the Mid-Ohio Valley region is around 12:1.