Avalanche Kills Snowmobiler In Cabin Creek Near Sage Peak In The Madison Range Of Montana (UPDATED)


Madison Range, Montana – On Tuesday, January 2, 2018 a snowmobiler was killed in Cabin Creek on the west side of Sage Peak in the Madison Range roughly 19 miles north of West Yellowstone, Montana.

Montana Flag | Pixabay Image
Montana Flag | Pixabay Image

The rider was in a group of 6 when the avalanche occurred. According to MTAvalanche.com, the group found unstable results and “opted not to highmark, deciding instead to ride the lower flanks.”

The avalanche was triggered from below and one rider was buried 3 feet deep under his sled. The sled’s ski “was sticking out of the snow and his location was confirmed by a beacon search. He was dug up in 12-15 minutes but did not survive” (MTAvalanche.com).

Gallatin County Search And Rescue was notified around 17:00. They responded quickly, but unfortunately, the man did not survive. KBZK.com identified the victim as Weylon Wiedemann, 40, of Pine City, Minnesota.

On January 2, 2018 the avalanche danger in all areas of the GNFAC forecast zones, including the Southern Madison was Moderate (2/5).

The Gallatin National Forest Avalanche Center will conduct an investigation. They posted the following on Facebook:

Here is a video from the scene of the accident:

Here is a quick news clip about this tragic accident from KBZK.com:

This is the second avalanche fatality in Montana this season.

We will update this post when more information is available.


  • The GNFAC published a detailed avalanche report that can be read here. They published a brief synopsis and map that can be read here. The avalanche was classified as HS-AMu-R4-D2.5-O with a runout angle of 27°. The snowmobiler triggered the slide 300′ above him and was “stopped when the avalanche hit, carried 25’ to the bottom of the gully and buried 3’ deep under his sled.”

See Also: Global Avalanche Accidents 2017/2018

Read more about the avalanche on Sage Peak near West Yellowstone, Montana from the following sources: