Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Apr 3rd, 2015–Apr 4th, 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
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
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

Regions: Little Yoho.

Enjoy this weekend's Easter Spring storm but keep an eye out for recently buried wind slabs in the upper tree line and alpine elevations, cornices lurking at ridge tops and new loose snow avalanche problem over the March 28th crust interface. PJ

Weather Forecast

Cool maritime air mass off the coast will produce a series of fronts, which for the Rockies will produce some significant snowfall beginning late morning on Saturday. This storm will be up slope in nature. Winds will be light to moderate and freezing levels will be at around 1900 meters mid-day

Snowpack Summary

2-5 cm of recent snow overlies a prominent rain crust from March 28th. The mid layering and base of the snowpack is well settled in the forecast area of Little Yoho. Some recent snow has been redistributed by M-S winds earlier this week and these resultant wind slabs are buried in the alpine at ridge top and cross-loaded gulley features.

Avalanche Summary

An isolated size 2-2.5 avalanche was triggered by a ski touring group on the approach to the Peyto Glacier. The avalanche failed on basal facets in a shallow, steep and rocky moraine feature and had been freshly loaded with snow from the moderate to strong winds this past week.

Confidence

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

Avalanche Problems

Wind Slabs

Recent wind slabs will become buried with Saturday/Sunday's up-slope storm.

  • The new snow will require several days to settle and stabilize.
  • Use caution in lee areas. Recent wind loading have created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Loose Dry

Later in the afternoon as the snow begins to accumulate and load up on southerly aspects in particular, this might produce significant skier triggerable loose snow avalanches.

  • The snowpack on glaciers is shallow, and the use of a rope is recommended.
  • The new snow will requires several days to settle and stabilize.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2