There are some buried weak layers deep in the snowpack at elevations above treeline. When spring does come it is entirely possible that some of these weak layers will come alive. It will most likely be a matter of a rain on snow event, or multiple days of warm temperatures without the nightly freeze to lock things back together.
Watch the sun. When it comes out the surface snow will start to move, especially following storms that have left some loose snow on the surface.
Warm sunny days will weaken cornices and the snowpack as a whole. There are some very large cornices in the high alpine terrain that are fighting gravity right now. Avoid being on or underneath these bohemoths on warm days.
Avalanche conditions change for better or worse continually. Backcountry travelers should be prepared to assess current conditions for themselves, plan their routes of travel accordingly, and never travel alone. Backcountry travelers can reduce their exposure to avalanche hazards by utilizing timbered trails and ridge routes and by avoiding open and exposed terrain with slope angles of 30 degrees or more. Backcountry travelers should carry the necessary avalanche rescue equipment such as a shovel, avalanche probe or probe ski poles, a rescue beacon and a well-equipped first aid kit. For a recorded version of the Avalanche Advisory call (208)765-7323.