Archived

Avalanche Forecast

Apr 3rd, 2025–Apr 4th, 2025

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

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Regions: Little Yoho.

Sunny skies will make slopes look inviting, especially on northern aspects where conditions are still good. While north slopes seem appealing this is where the greatest uncertainty lies in triggering the deeper instabilities.

Confidence

Low

Avalanche Summary

One size 1 skier triggered surface slab on Mt. Field headwall. Otherwise, no new activity was reported today,

Snowpack Summary

Surface crusts on all aspects to ~2800 m except north, where powder snow is found at higher elevations. On southerly aspects, the upper 30 cm contains several crusts. The most prominent crust is Mar 27, formed from rain last week, but we have yet to see avalanches on it.

Below this, 80 cm of firm snow overlies the Jan 30 facets, which are stronger in Little Yoho than further east but still show potential for propagation with sudden planar test results.

Weather Summary

Progressively warmer with each day in the outlook.

Friday: Sunny skies, freezing levels climbing to 2100 m, light westerly wind, and alpine temperatures ~3C.

Saturday: Sunny skies and freezing levels climbing to 2300 m, light to moderate westerly wind

Sunday: Sunny and freezing levels climbing to 2500 m, light westerly wind

Monday - cloud and light flurries move back into the region.

Terrain and Travel Advice

Uncertainty is best managed through conservative terrain choices.
Be mindful that deep instabilities are still present and have produced recent large avalanches.
Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.

Avalanche Problems

Persistent Slabs

Below the recent snow is a 90-150 cm slab on the persistent mid-pack Jan/Feb facet layer. Concern exists on high northerly aspects where the March 27 raincrust capping the slab is weak, especially as temperatures warm.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1.5 - 3

Loose Wet

The problem will develop over the day with solar input and warming temperatures.

Aspects: South, South West, West.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 2