Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Nov 3rd, 2019–Nov 4th, 2019

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.

Regions

Little Yoho.

We are just starting to forecast for the season and are operating with very little information right now. Pacific air is bringing snow. This, coupled with an arctic shift on Tuesday, can be expected to increase avalanche hazard.

Weather Forecast

The start of a NW flow has brought a few cm in the last 24 hrs and, as winds pick up to strong in the alpine Monday, may bring as much as 20cm by Tuesday. An arctic front will descend through the region Tuesday. As this air collides with the lingering NW flow, locally intense snowfall and potentially some gusty winds can be expected.

Snowpack Summary

Treeline snow depths range from 30-50 cm with up to to 80 cm is found in the lee features. The snowpack is generally faceted with a thin October crust near the surface providing support to ski travel although this crust is not continuous across all terrain.. Below treeline snowpack depths have not reached threshold to avalanche..

Avalanche Summary

With some further explosive control work yesterday, the Lake Louise snow safety team triggered a size 1.5 wind slab 30m wide and 30 cm deep . This is similar to results created earlier in the week.

Confidence

Intensity of incoming weather systems is uncertain on Monday

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.