The Gallatin National Forest Avalanche Center issued a backcountry avalanche warning for the Bridger and Northern Gallatin ranges earlier this week, where snowpack remains likely for human triggered avalanches:

A lot of snow has fallen (on top of an unstable snowpack) in southwest Montana in the last week. That, combined with strong winds, is causing avalanche danger.  The GNFAC  Avalanche Advisory for 12/26/13 is rated CONSIDERABLE.

Per the GNFAC,

Yesterday a skier triggered an avalanche on Mt. Ellis in the northern Gallatin range. Fortunately, he was able to ski off the slab and was not caught. Many other slides were triggered near Mt. Blackmore in the same range. In the Bridger Range, many slides have been spotted both on the west and east sides and winds were actively loading the east slopes of Saddle Peak yesterday.

For more information and updates on avalanche advisories, visit mtavalanche.com.