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Avalanche Forecast

Archived

Nov 25th, 2024–Nov 26th, 2024

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

Watch for pockets of windslab in isolated Alpine lee features.

For now, the bigger danger is returning to the parking lot from your day's mission. Many rocks/stumps/obstacles remain at or near the surface in the valley bottom. Slow down, maybe walk if you have to, to save yourself from breaking bones or gear.

Confidence

High

Avalanche Summary

Natural avalanche activity has dropped, along with few reports of human-triggered avalanches.

A field team near Fidelity was able to ski-cut steep convex rolls, resulting in small, slow-moving loose sluffs.

Snowpack Summary

Variable surface conditions exist in the Park, with wind affected snow in higher Alpine areas and 10-20cm of settling snow in sheltered terrain features.

The Nov 9 crust, down 50-100cm, has had limited test results on it. The base of the snowpack is comprised of several dense, melt-freeze rain crusts.

Treeline snowpack depths average 110-130cm.

Weather Summary

Expect cloudy skies with brief clear periods, some isolated flurries, and temps near -10°C.

Tonight: Cloudy with clear periods, Alp low -10°C, light W winds

Tues: Mainly cloudy with trace snowfall, Alp high -10°C, light W winds

Wed: Cloud with sunny periods, isolated flurries, trace snowfall, Alp high -11°C, light/gusting mod W winds

Thurs: Cloud with sun and isolated flurries, trace snowfall, Alp high -10°C

Terrain and Travel Advice

  • Carefully evaluate steep lines for wind slabs.

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.