Arrow-right Camera
The Spokesman-Review Newspaper

The Spokesman-Review Newspaper The Spokesman-Review

Spokane, Washington  Est. May 19, 1883
Partly Cloudy Day 95° Partly Cloudy
News >  Voices

Weird wintry mix – the day it graupeled outside

Snow pellets begin to cover Highway 2 on the West Plains on Dec. 4. (Jesse Tinsley / The Spokesman-Review)
Snow pellets begin to cover Highway 2 on the West Plains on Dec. 4. (Jesse Tinsley / The Spokesman-Review)
By Nic Loyd and Linda Weiford Washington State University

We in the Inland Northwest have been waist-deep in heavy snowfall predictions, but when was the last time you heard a forecast calling for a graupel storm?

Probably never.

Which is why much of Spokane was taken by surprise when small white Styrofoam-like beads coated the area on Dec. 4.

Graupel – pronounced like grovel, but with a “p” instead of a “v” – is basically the mingling of snow and hail. Also called snow pellets or tapioca snow, it is created when snow falling high in the atmosphere encounters super-cooled water droplets that freeze around each snowflake, forming a delicate crust of ice crystals.

If you squeeze graupel between your fingers, it will crumble because snowflakes are inside the crust instead of solid ice. This makes it more dense and granular than snow but more slushy than hail.

Graupel is more common in high elevation areas such as Gunnison, Colorado, and Laramie, Wyoming. Why, then, did it unload on Spokane in early December?

As a storm was moving into the region, the cloud-level air was very cold while the surface air temperatures were relatively warm. In these unstable atmospheric conditions, falling snowflakes met up with super-cooled water droplets. In a process called accretion, the cold water instantly froze around the snowflakes to create gritty balls of white.

At higher altitudes, graupel is less likely to melt and break apart because it has less distance to travel before hitting the ground. Because of its density, it can trigger dangerous slab avalanches when a cohesive layer of graupel slides downslope over snowpack.

Though it sounds a bit like a German dessert, graupel is derived from the German term, cereal grain, according to the English Oxford Dictionary. The next time these not-quite-snow-but-not-quite-hail pellets fall onto lawns and roadways, keep in mind that it’s a weather phenomenon not often seen in our part of the world.

Nic Loyd is a meteorologist with Washington State University’s AgWeatherNet. Linda Weiford is a WSU news writer and weather geek. Contact: or

The Spokesman-Review Newspaper

Local journalism is essential.

Give directly to The Spokesman-Review's Northwest Passages community forums series -- which helps to offset the costs of several reporter and editor positions at the newspaper -- by using the easy options below. Gifts processed in this system are not tax deductible, but are predominately used to help meet the local financial requirements needed to receive national matching-grant funds.

Active Person

Subscribe now to get breaking news alerts in your email inbox

Get breaking news delivered to your inbox as it happens.