AVAMSO The following message is transmitted at the request of Flathead Avalanche Center Hungry Horse MT. . AVALANCHE WATCH ISSUED BY THE FLATHEAD AVALANCHE CENTER. 08:00 MDT Tue Mar 25 2025 The Flathead Avalanche Center in Hungry Horse has issued a BACKCOUNTRY AVALANCHE WATCH for the following areas: NWS Missoula MT - MTZ001 (MTZ001). MTZ002 (MTZ002) * WHAT. Rising temperatures and direct sun may produce very dangerous avalanche conditions Wednesday. * WHERE. Mid and upper elevations of the Whitefish and Swan Ranges; all elevations of the Flathead Range and portions of Glacier National Park (Lake McDonald and near Marias Pass). * WHEN. In effect from Tue 08:00 MDT to Wed 08:00 MDT. * IMPACTS. Unseasonably warm temperatures and direct sun may destabilize recent and drifted snow, resulting in widespread wet snow avalanches and large to very large slab avalanches that release deeper in the snowpack or near the ground. Debris from these slides could entrain large volumes of snow and run surprising distances, even into valley floors. * PRECAUTIONARY / PREPAREDNESS ACTIONS. Very dangerous avalanche conditions may develop. Delay backcountry travel or plan routes that minimize time in and below steep start zones. Consult http://www.flatheadavalanche.org/ or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center.
