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Archived

Avalanche Forecast

Apr 10th, 2025–Apr 11th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Little Yoho.

The snowpack in Little Yoho is significantly better than the shallower snowpack areas to the east. Less solar input is expected Friday, but watch locally for its effects.

A weaker freeze is expected below treeline to start the day.

Confidence

Moderate

Avalanche Summary

No new avalanches were observed on Thursday.

Snowpack Summary

Surface crusts are found in most locations except north-facing alpine zones. The integrity of the snowpack is based mostly upon the strength of the surface crust when it refreezes overnight (or doesn't). In areas with no surface crust, where the snow is dry and the ski conditions are best, the snowpack is generally strong, but a mid-pack layer of facets (Jan 30) remains the main buried weak layer of concern.

Weather Summary

3-5cm of snow is expected Thursday night into Friday AM with strong SW winds, diminishing over the day. Freezing levels are expected to rise to 2000m with mainly cloudy skies. See table for more details.

Terrain and Travel Advice

  • Start your day early and be out of avalanche terrain during the heat of the day.

Avalanche Problems

Wind Slabs

Some ski hills are reporting smaller wind slabs, but we are uncertain as to how prevalent these are in Little Yoho due to a lack of field observations. Strong winds Thursday night and light snow may add to any existing ones.

Aspects: North, North East, East, South East, North West.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Persistent Slabs

Below the recent snow, a 90-150 cm slab sits on the Jan 30 facet layer. On all but high north aspects, recent sun crusts and the March 27 rain crust cap this slab, providing some security. Continue to use caution in thinner, high areas or when these crusts are weak or breaking down with daytime heat.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3

Loose Wet

Less solar input is expected Friday, but watch locally for its effects as hazard can change quickly. A weaker freeze is expected down low on Friday AM.

Aspects: South, South West, West.

Elevations: Treeline, Below Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5