Salmon River Mountains
Avalanche danger
Highlights
Triggering large avalanches is unlikely. Small, wet loose snow avalanches may occur on steep, south-facing slopes as the day warms, particularly in the afternoon under rocks or cliffs. Isolated pockets of small wind slabs may be lingering on upper-elevation slopes, particularly on terrain facing N-NE-E. Continue to practice safe travel habits in the backcountry.
Avalanche Discussion
From January 1-7, the mountains received 3-4 feet of snow (5" SWE). Peak avalanche activity occurred ten days ago, during our last storm cycle. The current snowpack has settled (up to nearly 10" since 01/06) and has become quite stable. Our January high pressure has dug its heels in over the western US. We are in day 7 of this high-pressure spell, with another ~ 7 days to go. Winds increased last weekend over the higher terrain, dramatically altering the snow surfaces above 7,000 feet. The wind, sun, and warm temperatures have nearly eliminated any snow available for transport, thus eliminating the chance for fresh wind slabs to form.
There are a few potential concerns to keep in mind. They're not widespread or likely to produce a large avalanche, but they could be dangerous in higher-consequence terrain.
- Wind Slabs: For the most part have aged, are stable, and the snow for transport has dwindled over the last week. You may not find sensitive wind slabs at upper elevations, but think about the consequences and stay alert. Even small slabs can pose a threat if encountered unexpectedly. Pay close attention to signs of surface wind texture, like waves or ripples—or snow that feels thicker, denser, or more cohesive than what you're finding on wind-sheltered slopes. Additionally, it is the time of season when cornices have grown large, and these hunks of snow can break in unexpected ways, or farther back on ridgelines.
- Loose Snow Avalanches: can also occur on steep, solar slopes as the day warms, particularly underneath rocks and cliffs. You can reduce your exposure by switching to cooler, shaded aspects away from direct sun.
Our habits follow us. Avalanche hazard ratings will always fluctuate up and down throughout a winter, but our travel habits should remain the same. If you're getting out and about in the mountains, drop us an observation HERE.