Avalanche Forecast

Avalanche activity began to slow today with no new avalanches noted. Evidence of the cycle from the past few days is widepsread with many slides either failing at the ground or at the persistent weak layer down 1m.

Cooler temperatures have helped stabilize the snowpack where previously it lacked structure and was rain soaked. This is mainly below 2200m or just below treeline. Above this elevation the snow was drier and windslabs formed with the strong SW flow. These windslabs are overlying a variety of different surfaces from crusts on solar aspects to dry snow on more polar. Carefully evaluate this bond as you travel. A deeper persistent layer down 1m was active in many avalanches over the past few days. This layer was most active on N and E aspects. Treat any area that have not slid as suspect and requires careful evaluation or imply avoidance. Deeper in the snowpack the weak facets and depth hoar at the base of the snowpack is still there. As temps warm up and this layer begins to settle and squish out it will improve and begin to bond but for now, its still a layer to think about as you travel. Thin areas is where you may be able to trigger this weakness.

Generally light winds on Thursday with trace accumulations of snow. Temperatures will remain cool with the freezing level forecasted to be around 1800m. If the sun comes out solar radiation can be intense at this time of year so pay close attention to cloud cover.

More details can be found in the Mountain Weather Forecast.

• In areas where deep persistent slabs may exist, avoid shallow or variable depth snowpacks and unsupported terrain features.
• Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.