Date: March 7, 2017
The avalanche problem today will change as the day progresses, from wind slab this morning to wet slab tonight. Two inches (2”) of snow overnight combined with up to another inch this morning on 30 mph SW winds will deposit isolated pockets of wind slab near the start zones of our forecast areas. These will be larger in gullies with N or E aspects like Central, Odell, South, Left and Hillman’s Highway, but as these displayed the largest amounts of scouring during this past weekend, the contrast between this newly deposited snow and the old hard surface will make safe travel possible. As precipitation changes to rain this evening, these newly formed wind slabs as well as the wind slab that formed over the weekend will turn to wet slab. As the rain adds weight to the slabs, stability will decrease, with the greatest period of instability occurring after this advisory expires at midnight.