Avalanche Forecast

Archived

Oct 23rd, 2019–Oct 24th, 2019

Alpine

Below Threshold.

Treeline

Below Threshold.

Below Treeline

Below Threshold.

Alpine

Below Threshold.

Treeline

Below Threshold.

Below Treeline

Below Threshold.

Alpine

Below Threshold.

Treeline

Below Threshold.

Below Treeline

Below Threshold.

Regions

Little Yoho.

Avalanches are happening in the forecast region. Ice climbers take note of changing conditions at upper elevation while traveling in avalanche terrain.

Weather Forecast

Check Environment Canada for updates to the Banff and Yoho National Park forecast. The 10 day outlook for the forecast region is showing snow starting Thursday ending Saturday with acuminated values of 10-20cm. This is followed by clearing skies and a decrease in temperatures for the remainder of the week.

Snowpack Summary

A broad contrast in conditions exist in the forecast region. While the valley bottom is still green, a winter snowpack is starting to develop at higher elevations. You can expect to find wind slabs, faceted layers and highly variable condition in the alpine. Upper elevation gulleys could be holding over 100cm creating a serious avalanche threat.

Avalanche Summary

Natural avalanche activity has been observed through the forecast region. In most observations avalanches have released from high alpine terrain with an increase in activity as high wind values rip through the valley.

Confidence

Problems

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.