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Avalanche Forecast

Archived

Feb 6th, 2025–Feb 7th, 2025

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

Regions

Little Yoho.

Small windslabs may be found in alpine terrain. These have been generally small and stubborn to trigger but may be enough to ruin your day in steep terrain.

Confidence

Moderate

Avalanche Summary

No avalanches observed or reported in Little Yoho, however, in neighboring areas:

On Thursday, local ski hills were reporting thin hard windslabs ~ 10cm thick from the overnight winds. These were quite small in size and not overly reactive to skiier traffic.

There was a significant avalanche just west of our region that likely failed on the Jan. 30th layer in an area with a deeper snowpack and more of a slab above this layer.

Snowpack Summary

30-40 cm of snow from last weekend has been affected by the wind in exposed alpine locations. This recent snow has buried a weak layer of facets, sun crust and surface hoar. This layer (Jan. 30th), has the potential to become a dangerous sliding interface as the snowpack deepens and a cohesive slab builds above this layer. The mid and lower snowpack is well settled, with snowpack depths at the treeline ranging from 120cm to 180cm.

Weather Summary

Dry and cold conditions will persist. Winds will be light on Friday and increase to moderate from the west overnight and into Saturday. We may see a trace of snow on Saturday night and winds will decrease on Sunday.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Closely monitor how the new snow is bonding to the old surface.

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.