Strong northwest winds have created stiff, fresh slabs of wind-drifted snow on all aspects near and above treeline. Winds from this direction tend to create some odd loading patterns. On northerly aspects, you are likely to find cross-loaded gullies and depressions. On southerly aspects, expect to find wind loading along leeward facing ridge lines, as well as on mid-slope terrain features. If the snow all of a sudden feels stiffer and more compact, you have found a fresh drift. Hollow sounds, collapsing, and shooting cracks are tell-tale signs of wind-drifted snow.

It is still possible to trigger avalanches on a weak layer of faceted snow from the December dry spell, buried on 12/25, about a foot below the surface. This weak layer is widespread on slopes facing W-N-E and is most reactive near treeline. Recently formed slabs of wind drifted snow may increase the sensitivity of this layer. If you are considering steep terrain, especially near treeline, you need to dig down and look for the weak layer and determine whether or not there is a slab on top. Above treeline, the problem is very localized as a result of all the wind scouring we have experienced over the past month. This is a unique situation as the danger generally increases with elevation. For more on this, see Dave's thoughtful anlaysis below.