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Avalanche Forecast

Archived

Apr 13th, 2026–Apr 14th, 2026

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

Regions

Haines Pass, Chilkat Pass.

Both wind slabs and persistent weak layers remain a concern in steep alpine terrain.

Continually assess as you travel, and back off terrain when signs of instability are observed.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

A few wet loose avalanches were observed in steep rocky terrain near Kelsall Lake over the weekend.

Snowpack Summary

Light snowfall has been redistributed by variable winds at higher elevations, with a dusting covering a crust on south-facing slopes.

A persistent weak layer of facets and crust is 80 to 150 cm deep in the alpine, and would most likely be triggered by large loads, like a cornice fall, or in thin-to-thick snowpack transitions.

See this AvCan Yukon MIN report report for a detailed conditions update.

Weather Summary

Monday Night

Partly cloudy. 0 to 1 cm of snow. 10 km/h south ridgetop wind. Treeline temperature -7 °C.

Tuesday

Mostly cloudy. 1 to 3 cm of snow. 30 km/h north ridgetop wind. Treeline temperature -2 °C.

Wednesday

Mostly sunny. 20 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Thursday

Mostly cloudy. 1 to 2 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -3 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Be aware of the potential for large, destructive avalanches due to deeply buried weak layers.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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.

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.