Observed this skier triggered avalanche from the flats below while exiting Grizzly Gulch. The skier was only carried for a short distance and was able to ski off to the side while the avalanche ran for a couple hundred feet. Unsure of dimensions due to poor visibility but we were able to briefly visualize the crown at the top which appeared to ~2 feet (very approximate as we were several hundred feet below). Avalanche looked to be a wind slab that was triggered on a ski cut.

No picture due to poor visibility.