Last week's heavy snow created a cohesive and harder slab on widespread preexisting layers of very weak faceted snow. In many areas the overload of heavy new snow was just enough to activate these layers and cause dangerous slab avalanches. More snow fell and drifting occurred in the last few days, which continued to load slopes with poor snow structure. On slopes facing the north half of the compass, people are likely to trigger soft slab avalanches failing on a buried persistent weak layer. Persistent weak layers consisting of faceted snow sandwiched between crusts exist in some more sunny terrain, and some may be become active as they are overloaded by drifted snow and warm temperatures soften the crusts. Observers in the Logan Zone continue to report signs of instability across the zone, including audible collapsing and cracking.

• Avoid fresh drifts on the lee side of major ridges and in and around terrain features like below cliff bands, gully walls, scoops, and sub-ridges.