Avalanche Forecast

Archived

Nov 8th, 2020–Nov 9th, 2020

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.

Alpine

Natural avalanches unlikely.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Regions

Little Yoho.

Variable winds have created wind slabs on all aspects in the alpine.

Early season hazards like rocks, logs, open creeks, thin ice, etc. are everywhere. Slide down hill and swing those tools with caution.

Weather Forecast

A mixed bag of sun and cloud with isolated flurries for Monday. Temperatures are forecasted to be inverted, meaning it will be warmer in the Alpine (-7) than at Valley Bottom (-12). Winds will be light from the SW.

Snowpack Summary

10-20cm of snow on top of a 3cm supportive crust with moist snow to ground below. The crust dissipates at ~2400m. At tree line the snowpack ranges from 30-60cm deep. Expect 30 to 40cm of recent snow above 2500m with recent NE winds reverse loaded some ridge line slopes

Avalanche Summary

No new natural avalanche activity reported. Local ski areas reporting explosive avalanche control of wind slabs to size 1 in alpine terrain.

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.