20-21

<p>In the Bridger Range, strong east wind since yesterday afternoon drifted snow from earlier this week into fresh slabs. Watch out for these drifts in unusual locations due to the less common wind direction. Although not widespread, these wind slabs are possible to trigger and could be large enough to injure or bury a person. Large avalanches breaking on weak snow at the ground and small wet loose slides are unlikely, but should be kept in mind if you are riding&nbsp;steep slopes (more on those hazards below). Today, avalanche danger is MODERATE on wind-loaded slopes, and LOW on all other slopes.</p>

<p>In the mountains near Bozeman, Big Sky and West Yellowstone there is weak, sugary snow at the base of the snowpack (Doug’s video from <a href="https://www.youtube.com/watch?v=8Q4gTjESoq0"><strong>Teepee Basin</strong></a> last week shows this poor snowpack structure). It is unlikely to trigger an avalanche on this layer right now, but the result would have huge consequences. Carefully assess the snowpack and choose terrain to minimize the chances of encountering this deep slab hazard.</p>

<p>Another warm, sunny day creates a chance for small wet loose avalanches on slopes that receive direct sun. These slopes have a crust on the surface that formed from previous days of sunny, warm weather. Anticipate the possibility of wet loose avalanches later in the day, and avoid being underneath or on steep, sunny slopes if the crust has melted and the surface is wet. Wet slides will generally be small, but on isolated slopes where the snowpack is saturated, wet slides could gouge to the ground (<a href="https://www.youtube.com/watch?v=l5LfdUsd0Wk"><strong>Specimen creek video</strong></a>). Today, large avalanches are unlikely and the avalanche danger is LOW.</p>

<p>Yesterday near Abiathar Peak west of Cooke City, skiers were nearly hit by a large falling cornice while they were hiking up a steep chute (<strong><a href="https://www.mtavalanche.com/node/24618">details</a></strong&gt;). Most slopes are stable and avalanches are unlikely, but isolated hazards exist. These hazards may be small or unlikely, but are potentially deadly if you are in the wrong terrain. Snow that fell earlier this week created small slabs, and we saw loose snow avalanches that ran far on the firm crust underneath (<a href="https://www.mtavalanche.com/images/21/meridian-peak-avalanche"><strong>…;, <a href="https://www.mtavalanche.com/images/21/storm-slab-cooke-city"><strong>ph…;, <strong><a href="https://www.youtube.com/watch?v=fRcnpNGTKCQ&amp;list=PLXu5151nmAvQDzKmH…;). Today, be on the lookout for small wind slabs formed by recent moderate east wind, and loose snow slides and cornice falls as temperatures warm above freezing (<a href="https://www.mtavalanche.com/images/21/skier-triggered-loose-snow-slide-…;). Today,&nbsp;isolated hazards exist, and the avalanche danger is rated LOW.</p>

<p>If you get out, please send us your observations no matter how brief. You can submit them via our <a href="https://www.mtavalanche.com/node/add/snow_observation"><strong>website<…;, email (<a href="mailto:mtavalanche@gmail.com"><strong>mtavalanche@gmail.com</strong></a…;), phone (406-587-6984), or Instagram (#gnfacobs).</p>