Kalispell, MT – Dangerous avalanche conditions across northwest Montana mountains are likely to trigger large, destructive slides through Saturday.
According to the Flathead Avalanche Center in Hungry Horse, a backcountry avalanche warning took effect at 6 a.m. Thursday and remains active until 6 a.m. Saturday for areas including the Whitefish, Swan, and Flathead ranges, along with parts of Glacier National Park.
The warning covers terrain above 5,000 feet, including the Lake McDonald and Marias Pass regions. Officials say recent rain combined with warm temperatures has significantly weakened snowpack stability.
Forecasters report that both natural and human-triggered avalanches are likely during this period. Wet avalanches are expected to carry heavy debris, while deeper buried weak layers may fail, producing very large and potentially destructive slides.
According to the Flathead Avalanche Center, avalanches could travel long distances, reaching valley floors, flat terrain, and even mature forested areas—expanding the risk beyond typical steep slopes.
Officials strongly advise avoiding all avalanche terrain during the warning period. Backcountry travel is not recommended due to the high likelihood of unstable snow conditions and unpredictable slide behavior.
Similar dangerous conditions may exist outside the officially monitored zones, forecasters said, urging recreationists to check updated reports before entering mountainous areas.
The warning comes during a time when late-season warming can rapidly destabilize snowpack, particularly affecting popular recreation zones used by skiers, snowmobilers, and backcountry hikers.
More information is available at flatheadavalanche.org and avalanche.org.
This article was produced by a journalist and may include AI-assisted input.
All content is reviewed for accuracy and fairness.
Follow us on Instagram & Facebook and support local independent news.
Have a tip? Message us.
