Kalispell, Montana – Backcountry travel across northwest Montana is becoming life-threatening this morning as unstable snowpack conditions increase the risk of large avalanches that can run into valley floors and forested terrain.
According to the Flathead Avalanche Center, a Backcountry Avalanche Warning is in effect until 6 a.m. Sunday for terrain above 5,000 feet in the Flathead Range, including areas near Lake McDonald and Marias Pass in Glacier National Park. Rain combined with warming temperatures has weakened deep layers in the snowpack, creating conditions where both natural and human-triggered avalanches are likely.
Slides in this setup are expected to carry heavy, wet debris and could release several feet deep, making them large and destructive. Terrain traps, including gullies and lower elevation runouts, are especially dangerous as avalanches may travel farther than expected.
Officials strongly advise avoiding all avalanche terrain. That includes steep slopes, runout zones, and even flat areas below avalanche paths. Anyone in the backcountry should reassess plans immediately and stay clear of affected zones.
Dangerous conditions will persist through the overnight hours, and additional warnings may be issued if warming and rain continue to destabilize the snowpack.
