Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Regions
Glacier.
Freezing levels remain above 2000m and have been that way for the past week. This has resulted in a poor overnight recovery and a isothermal snowpack at lower elevations.Rain and or sun today, will continue to destabilize the snowpack.
Weather Forecast
Temperatures and freezing levels continually remain higher than forecasted, keeping the avalanche hazard elevated. Mainly cloudy today with some flurries in the Alpine and showers at lower elevations, winds should remain light, and the FL could reach 2300m. Temps slowly cooling off over the next few days with 5cm forecasted for Monday evening.
Snowpack Summary
High freezing levels all week have resulted in poor overnight recovery of the snow surface. Expect to find a breakable crust in the morning on all aspects at and below tree line and for the crust to break down into moist snow by the afternoon. Isothermal conditions exist below tree line. Cool dry snow exists on high Northerly aspects
Avalanche Summary
The natural spring avalanche cycle has continued for over a week now, and is still producing natural avalanches to sz 3. Multiple artillery and helicopter control missions last week produced numerous avalanches on all aspects. The most notable avalanche yesterday, was a glide crack release in Mounds path.
Confidence
Problems
Loose Wet
Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.
Persistent Slabs
Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.
