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Avalanche Forecast

Archived

Dec 28th, 2025–Dec 29th, 2025

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

Regions

Glacier.

Triggering wind slab avalanches in loaded lee areas remains possible.

Use conservative group management, and avoid areas where the surface has been stiffened by the wind.

Confidence

Avalanche Summary

There is evidence of reactive wind slabs in exposed areas in the alpine and at treeline. Although the natural avalanche cycle has slowed, riders are getting surprised. Check out this MIN report.

There was a cycle of natural avalanche activity in steep open terrain Thursday night and through the day Friday. These were mostly size 1.5-2.5, with a few size 3s from Mt. Tupper and Mt. MacDonald.

Snowpack Summary

Another 20-30cms of low density snow fell Friday building fresh storm slabs, especially in the alpine and open tree line areas where new snow has been redistributed by SW winds.

The mid and lower snowpack are generally strong. There are a couple of crusts buried over a meter deep at Treeline and and below, but these have not shown signs of reactivity in our area recently.

Weather Summary

The ridge of high pressure begins to break down today, but little moisture will make it inland for several more days.

Tonight Mainly cloudy. Alpine Low -12°C. Ridge wind SW-25km/h.

Mon Mainly cloudy, isolated flurries. High -5°C. Wind SW-20km/h.

Tue Sunny periods. High -1 °C. Wind SW-20km/h. Freezing level (FZL)1500m.

Wed Mix sun/cloud. High 0°C. Wind SW-15km/h. FZL 1800m.

Terrain and Travel Advice

  • Avoid areas where the snow feels stiff and/or slabby.
  • If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.

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.