Wyoming Snowpack Levels At 66% Of Average Through December 14, 2021

Snowfall started later than normal in some parts of Wyoming and as a result, the statewide snowpack median is lower than this time last year.

The National Weather Service and the US Department of Agriculture report that as of December 14th, the state-wide snowpack is at 66% of median.

That’s down from 71% at around this time last year and down from 130% from around this time in 2019.

Currently the snowpack level in the Tongue River basin, which includes Sheridan, Big Horn, Dayton and Ranchester, is at 83% of median.

That is down from 89% at around this time last year and down from 131% at around this time in 2019.

The Little Goose Creek area within the Tongue River basin, reports snowpack levels at 96%.

The Powder River basin, which includes Buffalo, Kaycee and Clearmont is at 92% of median, which is the highest percentage in the state.

That is up from 68% at around this time last year, but down from 160% at around this time in 2019.

The lowest snowpack level in Wyoming is the South Platte Basin area, which is at 7%.

That area includes the city of Cheyenne.

The median is calculated over a 30-year period from 1991-2020.

It is updated every 10 years and was last updated earlier this year, dropping the numbers from the 1980’s and adding in the numbers from the 2010’s.

Click here to see the weekly snow report from the National Weather Service as of December 14th.

Click here for a text breakdown of each basin in Wyoming as of December 15th.