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Avalanche Forecast

Feb 3rd, 2017–Feb 4th, 2017
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

An upslope storm will persist through the weekend.  Already sensitive slopes will be reverse loading with moderate NE winds.  Best to wait for storm to pass before committing to any big objectives.

Weather Forecast

Light snow is expected to continue through the weekend with moderate NE winds and cold temperatures.  We could possibly get 15 cm by Monday.

Snowpack Summary

New snow on the way will be reverse loading lee slopes with moderate NE winds. Surface faceting and surface hoar will be buried creating a second weak interface in the upper snowpack. Poor bonding between these layers is expected. Below is a weak and faceted mid-pack with depth hoar to ground.

Avalanche Summary

No new avalanche observations or reports today.

Confidence

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

Avalanche Problems

Wind Slabs

New snow is reverse loading on weak surface facets or surface hoar. These new slabs will bond poorly.  Last week's slab from M to S winds are still suspect.  Big open features and cross-loaded gulleys should be avoided until storm passes.
Use caution in lee areas. Recent wind loading have created wind slabs.Keep an eye out for reverse loading created by an upslope storm.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Loose Dry

Faceted snow  on ledges and above ice climbs can be easily triggered and can grow quickly by entraining surrounding snow especially in gulley features.
Sluffs may trigger deeper instabilities.Be cautious of sluffing in steep terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2