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Avalanche Forecast

Archived

Mar 5th, 2023–Mar 6th, 2023

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

Triggering large avalanches remains possible.

Assess smaller terrain features before you consider entering larger slopes.

Confidence

Moderate

Avalanche Summary

A suspected skier triggered sz 2.0 in Lone Pine on Sunday. No perceived involvement.

A few very small natural loose dry avalanches were observed today from steep solar aspects.

Friday, a few natural avalanches up to sz 3 were observed from steep, wind-exposed alpine terrain.

Snowpack Summary

40-60cm of settled snow overlies a layer of decomposing stellars (large new snow crystals), a crust on solar aspects, or a thin layer of facets. Wind effect can be found in the alpine and into tree line.

The mid snowpack is generally strong, however the deep persistent weakness of rounding facets and a decomposing crust remains at the bottom of the snowpack.

Weather Summary

A mix of sun and cloud for Monday with a chance of convective flurries in the afternoon. Alpine temps will range from -10 to -15 with a freezing level of 1000m. Winds will be light from the South.

Similar weather for the remainder of the week.

Terrain and Travel Advice

  • Start with conservative lines and watch for clues of instability.
  • Carefully evaluate steep lines for wind slabs.
  • Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.