Check Out This Rare Weather Phenomena That Just Happened in Idaho
This doesn't happen often, but it just happened in Fairfield, Idaho. Snow rollers are a phenomena that requires a lot of factors to happen simultaneously. Fortunately for us, they did and Idahoan Dan Robbins captured a picture of it.
The following conditions are needed for snow rollers to form:
- There must be a relatively thin surface layer of wet, loose snow, with a temperature near the melting point of ice.
- Under this thin layer of wet snow there must be a substrate to which the thin surface layer of wet snow will not stick, such as ice or powder snow.
- The wind must be strong enough to move the snow rollers, but not strong enough to blow them apart.
- Alternatively, gravity can move the snow rollers as when a snowball, such as those that will fall from a tree or cliff, lands on a steep hill and begins to roll down the hill.
If you just can't get enough of snow rollers, here you go.