Archived

Avalanche Forecast

Mar 22nd, 2018–Mar 23rd, 2018

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

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

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

Regions: Glacier.

Pay attention to changing conditions with rising temperatures and the possibility of falling snow turning to rain, as this will increase the avalanche danger.Quality riding found on polar aspects.

Weather Forecast

Cloudy with 6cm of forecasted snow starting this afternoon. Temps will rise to +6 in valley bottoms and near 0 in the alpine with a freezing level of 2000m. Winds will range between 15-35km/hr from an easterly direction. Friday will see more snow with accumulation up to 20cm, colder temps and strong winds.

Snowpack Summary

Above treeline the snow remains dry, burying a previous melt freeze crust that extends up to 2300m on all aspects and to mountaintop on solar aspects. Buried surface hoar found in isolated protected areas down ~20cm. Below treeline the upper snowpack contains a series of crusts at or near the surface and is becoming isothermal at valley bottom.

Avalanche Summary

Limited natural avalanche activity over the last few days, except for sluffing out of steep unsupported terrain.

Confidence

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

Avalanche Problems

Wind Slabs

Recent snow and variable moderate winds may have built pockets of wind slab and would be most problematic where it's sitting on a crust or surface hoar.

Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Convex features and steep unsupported slopes will be most prone to triggering.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Loose Wet

Today's high freezing level of 2000m and the possibility of rain at lower elevations will weaken the snowpack and increase the possibility of loose wet avalanches.

If triggered loose wet sluffs may step down to deeper layers resulting in larger avalanches.Use caution above cliffs where small avalanches may have severe consequences.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5