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Grey Butte Skier Triggered Avalanche
Roller balls and rapid warming was observed. The first skier dropped in to the line from the top of the pitch making one turn and then breaking the slab loose. The slab appeared to be the warming top few inches of storm snow on top of the deeper, still cold storm snow. The slab was fast moving and picked up more snow as it moved downhill, leaving a moderate sized debris pile of soft, warm snow.
The cloud layer was thin and the sun was felt through it. Varying types of precipitation was noticed through out the day; some stellars earlier in the day then changing to needles and graupel.