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Archived

Avalanche Forecast

Feb 13th, 2019–Feb 14th, 2019
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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: Jasper.

Don't break someone's heart on Valentines Day. Stay smart and pick your lines appropriately.

Weather Forecast

A ridge of high pressure is along the rockies providing warmer and stable weather until Thursday evening when a frontal system moves in  bringing some precipitationThursday: Mix of sun and cloud. Ridge winds from the SE at 10 km/h. Alpine temps:  High -7C.A detailed mountain weather forecast is available from Avalanche Canada.

Snowpack Summary

Some wind affect noted in the alpine and at tree line. Due to the cold temperatures there seems to be no slab over the persistent weakness sitting down 35-45cm (surface hoar, crusts, and/or facets). The bottom of the snowpack is structurally weak especially in shallow snowpack areas, consisting primarily of facets/depth hoar.

Avalanche Summary

One notable windslab in the alpine stepping down to ground yesterday. Loose dry avalanches up to size 2 have been naturally triggered in the facetting snowpack in steep shallow areas.On Feb 7th, a size 2 deep persistent slab was triggered by skiers in the Maligne area on a W aspect, 1950m, on a 30 degree slope (see MIN).

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Friday

Avalanche Problems

Wind Slabs

Wind effect in the alpine and tree line. In the right spot you could trigger a windslab.
If triggered the wind slabs may step down to deeper layers resulting in large avalanches.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Deep Persistent Slabs

This problem is still present and could be triggered from shallow snowpack areas. See MIN report.
Be cautious in shallow snowpack areas where triggering is more likely.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1.5 - 3.5