Avalanche Forecast

Archived

Mar 4th, 2023–Mar 6th, 2023

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches possible, human triggered probable.

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.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Natural avalanches unlikely.

Regions

Waterton Lakes, Waterton.

Carefully assess storm snow amounts while traveling. Recent convective flurries may have deposited deeper amounts in some areas.

Confidence

Low

Avalanche Summary

No new natural avalanches observed

Snowpack Summary

Up to 20cm of new snow from the last three days sits on a variety of wind affected surfaces including hard windslab and sastrugi. The January melt freeze crust is now buried 50-100cm. Alpine and Treeline midpack is well settled and overlies basal facets and depth hoar. Below treeline, the Jan Crust overlies facets and depth hoar to ground.

Weather Summary

Saturday

Broken clouds and light flurries. Alpine high of -10 with light SW winds.

Sunday

Temps fall to -15 in the alpine with moderate SE winds. Overcast skies and chance of a few flurries.

Monday

Overcast skies and chance of a few flurries. Alpine high of -10 with light S winds.

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.