Archived

Avalanche Forecast

Jan 15th, 2015–Jan 16th, 2015

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: Little Yoho.

Beware of the prominent surface hoar layer which is down 40-50 cm. This layer is reactive to human triggering.

Weather Forecast

Mainly cloudy with isolated flurries through to Friday. Westerly flow with moderate to strong ridge top winds. Freezing levels at valley bottom.

Snowpack Summary

The main concern in the snowpack is the Dec 18 surface hoar layer down 40-50 cm. This layer is very prominent and is producing moderate test results. This layer remains prime for human triggering. Sun crust forming on steep solar aspects and new surface hoar forming in sheltered areas.

Avalanche Summary

No new avalanches observed or reported in last 48 hours.

Confidence

Avalanche Problems

Persistent Slabs

A persistent weak layer of surface hoar/ crust/ facets lurks 50 cm's below the surface. This layer is most reactive at the treeline elevation where it is a surface hoar/ crust combination.

Choose conservative lines and watch for clues of instability.
Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3