We were walking the ridge towards patsy marley and stomping at the tops of roll-overs when the slide released, it propagated at least 350 feet up the ridge line heading towards the peak. I could not see how far it ran but all the trees below had rather large debris piles on the uphill side. when the slide released it propagated quickly and gained lots of speed right away. Very strong winds were rapidly loading the east and northeast facing slopes and making very sensitive wind slabs. we passed another party of two who pushed farther up the ridge than we did and saw then trigger another wind slab. On their way back down the ridge they said that the slab they triggered was a good size also.