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Avalanche Forecast

Archived

Dec 26th, 2025–Dec 27th, 2025

Alpine
Natural avalanches possible, human triggered probable.
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.

Saturday will bring our first bout of real cold weather. Pack extra warm clothes and plan to finish your run with plenty of daylight remaining, in case anything goes wrong.

Confidence

Moderate

  • Uncertainty is due to the speed, direction, or duration of the wind and its effect on the snowpack.

Avalanche Summary

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

Snowpack Summary

Another 15-20cms of low density snow fell Friday building fresh soft 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 buried crusts at Treeline and and below, but these have not shown signs of reactivity in our area recently.

Weather Summary

Arctic air briefly infiltrates our area, bringing cold temps, and possibly some N winds.

Tonight Scattered flurries (up to 5cm). Alpine Low -21°C. Ridge wind gusty moderate, West switching to NW.

Sat Mixed sun & cloud. High -16°C. Light NW wind.

Sun Mainly cloudy, isolated flurries. Low -15 °C, High -10 °C. Light W wind.

Mon Mainly cloudy, isolated flurries. Low -9 °C, High -7 °C. Light W wind.

Terrain and Travel Advice

  • Give the new snow several days to settle and stabilize before pushing into bigger terrain.
  • Avoid areas where the snow feels stiff and/or slabby.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.