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Avalanche Forecast

Archived

Feb 4th, 2025–Feb 5th, 2025

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

Regions

Little Yoho.

Lack of avalanche activity due to minimal wind effect and very cold temperatures is bringing the danger ratings down. We remain uncertain about the wind effect in the high alpine, but overall avalanche conditions have stabilized quickly since last weekend's storm.

Confidence

Low

Avalanche Summary

One fresh dry loose avalanche was observed from the north gully of Mt. Burgess.

Snowpack Summary

Last weekend's storm has settled into 30-40 cm of soft surface snow, mostly untouched by wind except in high alpine areas. This recent snow has buried a new weak layer (dated January 30) which will be important to watch in the future. Currently, minimal slab properties overlying the Jan 30 layer keep the danger moderate to low. The mid and lower snowpack is well settled, with snowpack depths at the treeline ranging from 120cm to 180cm.

Weather Summary

An arctic airmass continues to dominate the weather in the region, with Wednesday bringing mostly broken or clear skies, a few snowflakes, and temperatures ranging from -30 overnight to -15 during the day. Thursday through Saturday look bluebird and cold.

Terrain and Travel Advice

  • 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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.