Driving and glassing - Ketchum to Sawtooth Overlook

There were many large persistent slab avalanches that released naturally in the past 48 hours. The observed activity was focused on NW-W aspects in alpine terrain. Some avalanches occurred in wind-affected terrain at middle elevations, near the upper elevation transition. Most slides were in obviously wind-loaded terrain, but a couple (the middle elevation slides) were on somewhat sheltered slopes. Visibility was best in the Boulder Mtns, good in the western Smoky Mtns near Smiley Ck, and poor on the Smoky Mtn crest from Warm Springs Ck north to Prairie Ck. Observed activity was most widespread (by a large margin) in the Boulder Mtns. There were few visible recent avalanches in the western Smoky and southern Sawtooth Mtns, but roadside vantage points did not allow much viewing of W and NW aspects. 

All photos from today available at this link: https://drive.google.com/drive/folders/1yVlyiJhP-sPLy2ipd0JZFz7lO8QDgEDk?usp=sharing

We will add some additional Avalanche occurrences (photos below) as we catch up in the coming days.

Cracking and collapsing are N/A.

Galena &E Mtns zone: Obvious previous wind effects in most alpine terrain in the Boulder Mtns (scallops/dunes/ripples, scouring, cornices, large wind slabs and features), and some in the Smokys where visibility was decent. Wind affected the upper part of middle elevations (>9000'). 

Sawtooth & W Smoky zone: Appeared to be less wind effects than in the Boulders and Smoky Mtn crest (Norton Peak to Saviers Peak at the head of Owl Ck, etc).