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Archived

Avalanche Forecast

Feb 26th, 2017–Feb 27th, 2017
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
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
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

Regions: Glacier.

Remember to always use safe backcountry travel techniques and good group management. Use caution around cornices and unsupported shallow snowpack areas.

Weather Forecast

Expect unsettled weather today bringing cloudy skies with some sunny periods. A few cms of new snow are forecast today with potential for more with convective activity.  Temperature in the alpine will get up to -13 deg with NE winds to 15 kph.  Precipitation is forecast to start Tuesday afternoon with warming temps and increasing winds.

Snowpack Summary

Flurries have deposited 10-20cm of low density snow. In the alpine winds have created a variable windslab. On Solar aspects a supportive sun/temp crust is just below the surface. Below 1600m a strong temp crust exists on all aspects. The lower snowpack is still facetted and weak from the cold temps in Dec & Jan

Avalanche Summary

In the last few days two size 2- 2.5 slab avalanches occurred off of Mt. Macdonald. A size 1 wind slab was accidentally triggered on Glacier Crest aswell. Heavy sluffing was observed Saturday on steep, Northerly treeline features. The sluff was relatively small in size but could knock a rider off their feet or pile up deep in a terrain trap.

Confidence

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

Avalanche Problems

Wind Slabs

Moderate winds from the South yesterday have switched to more Northerly this morning.  Expect windslab to be present on both aspects and use caution as you transition to ridge top or mid slope lee features.
Use caution in lee areas. Recent wind loading has created wind slabs.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Loose Dry

New low density snow is sluffing fast in steep unsupported terrain. It has the potential to knock a rider off their feet or push them into a terrain trap.
Be cautious of sluffing in steep terrain, particularly where the debris flows into terrain traps.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2