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Avalanche Forecast

Archived

Feb 19th, 2022–Feb 22nd, 2022

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

Regions

Waterton Lakes.

Weather models are inconsistent with forecasted snow amounts for this weekends storm. If snowfall amounts are higher than 30 cm hazard could be higher at all elevations. Investigate surfaces slabs thoroughly.

Weather Forecast

Tonight: Flurries, accumulation 7 cm. Light gusting to strong SW winds. Low -7.

Sun: Flurries, accumulation 6 cm. Light NE ridge top winds. Alpine temps high -11.

Mon: Cloudy with sunny periods and isolated flurries. Moderate NE winds. Alpine temps high -23, low -28.

Tues: Cloudy with sunny periods. Light NE winds. Alpine temps high -26, low -30.

Snowpack Summary

10-20 cm of snow is forecasted for Sat night through Sun. This will overlie pressed surfaces and hard windslabs from extreme SW winds. A melt freeze crust up to 2000m and higher on solar aspects is found 30-50 cm down, no failures in test on this layer. Well settled midpack. Dec 4 crust, buried 150-200 cm.

Avalanche Summary

No recent avalanches observed. If you go out on an adventure be sure to share your experience and snowpack information on the Mountain Information Network, we really appreciate any observations.

Confidence

Intensity of incoming weather systems is uncertain

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.