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Avalanche Forecast

Archived

Jan 18th, 2026–Jan 19th, 2026

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

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Cooler weather will consolidate the upper snowpack.

Be cautious in thin snowpack or rocky areas where triggering a deeper layer may be possible.

Confidence

Moderate

  • Uncertainty is due to limitations in the field data.

Avalanche Summary

January 16 to 18

  • No new avalanches reported but observations are limited. Consider posting to the MIN if you are out in the mountains!

January 15

  • Large natural avalanches (size 3) where reported and may have been a day old.

  • A small (size 1) persistent slab was remotely triggered near log cabin.

January 14

  • A large (up to size 3.5) natural avalanche cycle occurred during periods of rapid loading and warming. Breaking mature timber and going through lake ice at Bryant lake.

Snowpack Summary

30 to 40 cm of snow has accumulated over the past week and has been redistributed by extreme southerly wind with scoured south facing slopes and loaded north facing slopes.

At lower elevations a crust is present on or under the recent snow.

A weak layer of facets is buried 70 to 100 cm deep. In shallow snowpack areas, the bottom half of the snowpack is composed of weak depth hoar.

Weather Summary

Sunday Night
Mostly clear skies. 20 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 2700 m.

Monday
Sunny. 30 km/h north ridgetop wind. Treeline temperature -5 °C. Freezing level 500 m.

Tuesday
Mostly sunny. 10 km/h southeast ridgetop wind. Treeline temperature -9 °C with an above freezing layer from 1500 m to 2700 m.

Wednesday
Mostly sunny. 10 km/h north ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.

Problems

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.

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.