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Avalanche Forecast

Archived

Mar 31st, 2023–Apr 1st, 2023

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, 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

Glacier.

New snow will not bond well to previous surfaces of solar crusts and well settled powder from the recent high pressure. Expect reactivity as you enter your line, ski one at a time in steeper terrain, and be aware of what/who is below you.

Confidence

Moderate

Avalanche Summary

No new avalanches were observed or reported on Friday.

On Thursday, there were a few loose wet avalanches, up to size 2, from steep terrain in the highway corridor.

There were a few isolated glide slab avalanches this week from steep south facing terrain of Mount Tupper. A size 3 from Tupper Minor on Wednesday, a size 3.5 from Mounds on Tuesday, and a size 2.5 from Lone Pine on Monday.

Snowpack Summary

Incoming new snow is covering a solid crusts on solar aspects, and 5-10cm of settled old powder on polar aspects.

The mid and lower snowpack is generally strong. However, the basal weakness of rounding facets/decomposing crust can be found near the ground in many locations, and will remain worthy of consideration until the end of the season.

Weather Summary

A weakening cold front moving inland will bring snow flurries to Rogers Pass overnight, the "storm" will peak early Saturday morning.

Tonight: Flurries (5-10cm). Alpine Low -8°C. Freezing level(FZL) 1100m. Moderate SW ridgetop winds.

Saturday: Cloudy with isolated flurries. High -7°C. FZL 1200m. Moderate W wind.

Sunday: Flurries (10cm). Low -11°C, High -8°C. FZL 1100m. Light W wind.

Monday: Sunny periods/isolated flurries. Low -11°C, High -6°C. Light wind. FZL 1400m.

Terrain and Travel Advice

  • Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

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.