Avalanche Forecast

Archived

Nov 27th, 2020–Nov 30th, 2020

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

Waterton Lakes.

Pockets of soft snow still exist on Forum Ridge but wind slab is developing on exposed terrain. Variable snow height below 1900m can be treacherous on skis. Most areas outside Cameron Lake are below threshold. Regular bulletins begin Dec 3rd.

Weather Forecast

Strong SW Winds Fri- Sat.

Avalanche Canada's Mountain Weather Forecast is a great regional-scale resource for up-to-date weather information. Here you'll find snow amounts, freezing levels and other aspects of weather important to assessing winter conditions in the mountains.

SPOTWX is a good resource for local scale weather forecasts.

Snowpack Summary

Cameron Lake: Wind affected surface in most areas capping a 10-20cm wind slab over a deteriorating melt freeze crust. Lower snowpack is well consolidated & bonding well to the Nov 6th rain crust which exists at base of snowpack. Average snow depth at 2000m is 100cm but shrinks to 40cm at 1850m.

Most areas below treeline are still below threshold.

Avalanche Summary

No new avalanches observed.

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.