North Facing Duff/ Southern dust on crust

Skied the skier's right side of Anniversary Glacier and found 20-30 cm of wind deposited duff from the previous 2 day storm. Ridge tops and any South or windward aspects were thin and firm from the lower freezing levels Mon night thru Wed mid day. Hazard remained Low due to only 5-10 cm of new snow with limited wind slabs above 1700 meters