Northern San Juan

Avalanche

SS-N-R2-D2-O observed on North facing alpine terrain in upper Niagara Gulch on Anvil Mountain. Couple hundred feet wide and ran down approximately 500 vertical feet. Hard to judge crown depth from that distance and just a guess that it was naturally triggered. Viewed this morning (3/4) and hadn't noticed it in the previous days so best guess is it either triggered yesterday afternoon or evening from wind loading.