Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Login
Archived

Avalanche Forecast

Feb 27th, 2024–Feb 28th, 2024
Alpine
4: High
The avalanche danger rating in the alpine will be high
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
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
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

Avoid avalanche terrain as natural avalanche cycle is expected.

THE CANMORE HILL FROM THE NORDIC CENTRE TO GOAT CREEK PARKING LOT WILL BE CLOSED AT 1PM ON WEDNESDAY FEBRUARY 28 FOR AVALANCHE CONTROL.

Confidence

Moderate

Avalanche Summary

Several loose dry avalanches up to size 1 have been observed. Some wind slab avalanches have also been observed up to size 2 in both steep terrain and at treeline. This next storm will likely start a natural cycle.

Snowpack Summary

There is a lot going on in the snowpack now with all the new snow. 25cm of snow has fallen in this last storm and has become a wind slab in all exposed areas. Another 10cm is forecast to fall on Wednesday, again with strong SW winds. This is simply creating more wind slabs on the surface which are now sitting on a variety of interfaces:

  1. The February 24 storm interface which is down about 20-30cm and consists of suncrust and previous wind slabs. This layer will be sensitive to skier triggering.

  2. The February 3 Rain crust which is down about 40-50cm. This crust has started to break down in many places with facets showing up near the crust- the perfect sliding layer. There is a strong likelihood that any avalanche triggered in the upper snowpack will also step down to this layer.

  3. The November basal facets are alive and well and have come back on our radar as the February 2 rain crust is deteriorating and not locking in the weaknesses below as it once did. Skier weight has now been able to break through the Feb 2 rain crust in some places, which means that the basal facets can now be more easily affected.

    On top of all of this, we also have a loose dry avalanche problem.

Weather Summary

The next storm is set to begin on Wednesday bringing 10cm of snow by the end of the ski day. This storm is expected to bring a total of 20-30cm of snow by Friday morning, along with 70-90km/hr winds from the SW.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid exposure to overhead avalanche terrain, avalanches may run surprisingly far.
  • Avoid traveling in runout zones. Avalanches have the potential to run to the valley floor.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.

Avalanche Problems

Wind Slabs

This wind slab is sitting on the Feb. 24 interface down 20-30cm and consists of facets and previous wind slab.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely - Certain

Expected Size: 1.5 - 2.5

Persistent Slabs

This is the Feb 3 rain crust interface which is starting to break down and has facets near this interface and can be found 40-50cm down.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Very Likely

Expected Size: 1.5 - 2.5

Deep Persistent Slabs

This is the November basal facet problem that exists mostly in the high alpine where either the Feb 2 rain crust does not exist or has started to break down.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1.5 - 3