Northern San Juan

If you find a shallow spot and collapse a hard layer of snow that rests above weaker snow below, you can trigger an avalanche that will be large enough to injure or kill you. You can trigger avalanches from the margins of these stiff slabs from a distance or below. If you trigger an avalanche, it could be deeper and wider than expected. Avoid traveling near common trigger points, such as convex rollovers, rocky outcrops, or the edges of slopes with thinner margins of a slab.

You may not observe these signs of instability before triggering an avalanche. Give yourself a wide buffer from suspect slopes steeper than about 35 degrees. 

New snow overnight Tuesday could raise danger again at upper elevations.