Avalanche forecast

Soldier & Wood River Valley Mtns

Sawtooth Avalanche Center
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Avalanche danger

Tue
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low
Out of date — this forecast expired 4 years ago. You’re viewing past conditions, not the current bulletin.

Highlights

Generally stable avalanche conditions exist and large avalanches are unlikely. Strong winds are building a new batch of small wind drifts and slabs in terrain exposed to the wind. Though small, these slabs may be able to knock you off your feet and send you downslope, entraining plenty of weak, sugary snow along the way. 

The Avalanche Danger will increase overnight as an intense storm brings strong winds and new snow. The Soldier Mountains are expected to receive the most snow and conditions will be the most dangerous there.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–1.5

    Very little snow has fallen here in recent days. The winds are trying to make up for that. Strong winds are blowing on top of Baldy, and extreme winds are blowing in the Soldier Mountains. As of 5 AM, our Peak 2 weather station has recorded gusts in the 90s MPH for 9 of the past 10 hours. There is not a lot of snow available for transport in this zone, but you can bet that these winds are finding whatever there is and moving it around. Look for small, stiff, hard drifts near ridgelines and along mid-slope features like gullies and ribs that slow the wind down. Though not large enough to bury you, these slabs can knock you off your feet and send you downslope. Consider the consequences of being swept off your feet and carried through the terrain you are in. Small slabs can carry high consequences if they drag you through trees or over rock bands. 

    In areas sheltered from the wind, thick stacks of very weak facets developed during the drought of the past month. Triggering a loose snow avalanche involving these weak facets is a possibility on shaded slopes approaching about 40 degrees.

    ADDITIONAL DISCUSSION: On the western side of this zone (Dollarhide and west to the Soldiers), weak layers are buried in the upper 1-2 feet of the snowpack. These layers have largely become unreactive, thanks to an extended period without significant loading. If you are unlucky enough to find the "sweet spot" where these layers remain reactive you'll almost certainly be in rocky, wind-affected terrain steeper than about 35 degrees where recent drifting has added weight to these layers. These layers appear to be worse on slopes that directly face the sun where crusts+facets are buried.

Avalanche Discussion

LOW Danger and Changing Conditions

Today will start much like the past few days have, but our world of snow will look quite different by tomorrow morning. Much of today's forecast rests on the timing of the incoming storm. If the storm arrives late in the day, as forecast, it won't have a significant impact on today's Avalanche Danger. However, if snowfall gets here a bit earlier we may see Avalanche Danger beginning to creep up during the daylight hours. Fortunately, this will be easy for you to recognize and manage in the field. Pay attention to how much new snow is accumulating. If you are seeing more than about 4-6" of new snow you can expect that freshly forming slabs are growing in size and distribution, and are becoming easier to trigger. Look for shooting cracks as an indication that you've found an unstable slab. 

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