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Avalanche Forecast

Archived

Feb 11th, 2025–Feb 12th, 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.

Although slightly warmer Wednesday, the brisk northerly wind will keep it feeling cold. Lots of wind effect in the alpine, but pockets of good riding can be found.

Confidence

High

Avalanche Summary

No natural avalanches were observed or reported in 48 hrs. Sunshine triggered three small wind slabs with explosives on a NE-facing alpine feature. Visitor Safety looked at the Quartz skier accidental - the start zone was 48° and the failure plane was an old layer of weak facets down 50 cm.

Snowpack Summary

25-30cm of settled snow from last week has been redistributed by the wind in exposed locations, burying the Jan 30 weak layer. The mid and lower snowpack is well settled, with tree-line snow depths ranging from 120 cm to 180 cm.

Weather Summary

Wednesday's temperatures will be warmer, with morning lows around -20C and daytime highs around -10C. Winds will be light to moderate from the North, then switch to a westerly flow in the afternoon. Skies will be a mix of sun and cloud with no precipitation in the forecast.

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • Wind slabs are isolated, but may remain reactive.
  • 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.