Cayoosh

<p>Widespread evidence of a natural avalanche cycle in the Cayoosh valley. Numerous southwest to southeast slopes between Cayoosh and Marriot slid to size 3. Several of these slides ran full track, including one that appeared to slide to ground. At roughly 11:30, we heard a very loud noise coming from the Rohr Ridge area. We think this may have been a large cornice fall, but did not see the event. Not all alpine slopes went in this most recent natural cycle - we chose to avoid slopes with overhead hazard due to our uncertainty around cornices and the Dec 9 persistent weak layer. </p>

Weather Report

<p>Most of the day was overcast with temperatures near zero degrees. On our ski out (15:00) it was snowing s-1. </p>

Terrain Ridden

Mellow slopes, Open trees.

Terrain Avoided

Alpine slopes, Steep slopes, Convex slopes.

Avalanche Conditions

Rapid temperature rise to near zero degrees or wet surface snow.

Slab avalanches today or yesterday.

Snow Conditions

Crusty, Powder.

Weather Conditions

Warm, Cloudy.