Avalanche Forecast

Archived

Jan 5th, 2022–Jan 6th, 2022

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely, human triggered possible.

Regions

Little Yoho.

A storm starting Thursday will likely increase the avalanche danger over the next few days.

Weather Forecast

A storm will enter the region Thursday. Expect increasing winds over the day from the W/SW, 5-10cm by the end of the day, and temperatures around -15C at treeline by midday. Friday may see 10-15cm more, continued winds, and temperatures around -5C to -10C.

Snowpack Summary

Up to 20cm storm snow from a few days ago was distributed into alpine wind slabs wind slabs which sit over facets from last weeks cold snap in some locations. 80-110cm sits over the Dec 2 crust and facets in this area, but as of yet this has not been active. 200-260cm on average at treeline.

Avalanche Summary

No avalanches observed or reported Wednesday.

Confidence

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

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.