Archived

Avalanche Forecast

Apr 15th, 2012–Apr 16th, 2012

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

1: Low

The avalanche danger rating below treeline will be low

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

1: Low

The avalanche danger rating below treeline will be low

Alpine

1: Low

The avalanche danger rating in the alpine will be low

Treeline

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

A strong melt freeze crust exists in the morning below treeline which will begin to break down by mid-day. Expect winter conditions at treeline and above.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain on Monday

Avalanche Problems

Wind Slabs

On Saturday, size 2 slab avalanches were observed on north aspects below corniced ridge lines. Variable winds have created thin slabs on most aspects. No avalanche activity was observed on Sunday however slab bonding has not been tested.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Loose Wet

Cold overnight temperatures have formed a supportive melt freeze crust in most locations. Direct sun, warm temperatures and rain will quickly weaken this crust, dramatically increasing the avalanche potential. Pay attention to warming conditions.

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

Elevations: Alpine.

Likelihood: Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Recent size 2 slab avalanches have been observed on this layer on NE aspects. These slides were initiated by small loose snow avalanches. These deeper layers can wake up unexpectedly on all aspects.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 4