Avalanche forecast

Galena Summit & Eastern Mtns

Sawtooth Avalanche Center
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Avalanche danger

Mon
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

You may be able to trigger large avalanches failing on weak sugary snow 1-3 feet deep on shadier slopes that face away from the afternoon sun. As you climb into windier areas, be on the lookout for smaller, freshly formed drifts and slabs at upper elevations. Loose snow avalanches could occur this afternoon on steep, wind-sheltered slopes that face the sun.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2

    You could trigger a 1-3 ft thick persistent slab avalanche on buried weak layers (sugary facets, surface hoar, and crust + facet combinations). This problem is worst on middle and upper elevation slopes facing NW-N-NE-E that also received significant wind loading over the last few days. 

    While the odds are low, the consequences of triggering one of these dense, thick slabs are severe. Don't expect obvious signs of instability. In low probability/high consequence situations like this, there's a good chance the first sign of instability you'll see is the avalanche you trigger. 

    Persistent slabs can fail unpredictably and break wider and higher on slopes than you might expect. Avoiding avalanche terrain is the only surefire way to manage this problem. Short of that, you can reduce your risk by avoiding large, obviously wind-loaded, avalanche paths and those with ugly consequences if you are caught in a slide.

    (3/8/2026) Large natural slab avalanche near 10,500' on the south face of Boulder Peak in the Boulder Mtns. 

    Photo: Sawtooth Avalanche Center

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2

    The combination of recent snow and wind built slabs and drifts at upper elevations. These slabs remain possible to trigger.

    Where is it? Wind Slabs typically form near and below exposed ridgelines, and along cross-loaded mid-slope gullies. This problem will be most common at upper elevations, but be on the lookout for Wind Slabs in exposed middle elevations too. 

    • Look for shooting cracks, smooth dunes, textured snow surfaces, or cornices. 
    • Feel for changing surface conditions while entering more exposed terrain. Wind slabs will feel firmer than snow surfaces in sheltered locations. 

    If you encounter these signs, reduce your odds of triggering a Wind Slab by moving to lower-angle terrain and/or terrain sheltered from the wind.

    Wind Slabs could be great triggers for the larger Persistent Slab avalanche as described above.

    (3/7/2026) Remnants of an old slab avalanche out 4th of July Creek that's been mostly refilled due to recent wind loading.

    Photo: Tyler, Jorgenson

Avalanche Discussion

The places where triggering a large Persistent Slab avalanche is most likely are where recent wind loading coincides with buried weak layers 1–3 feet deep. Newly formed slabs from recent snowfall and wind may have added enough weight to increase the likelihood of triggering a deeper, larger persistent slab avalanche. This setup is most common on NW–N–NE–E aspects at mid and upper elevations.

Additionally, small Wet Loose avalanches may develop this afternoon on steep, sun-exposed slopes that are sheltered from the wind. Watch for pinwheels, roller balls, or moist, gloppy snow surfaces– these are signs that wet loose avalanches are becoming more likely.  To reduce your risk, move to shadier terrain where the surface snow remains dry and powdery.

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