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Avalanche Forecast

Archived

Apr 10th, 2025–Apr 11th, 2025

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 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

Glacier.

Recent snow and wind have created a reactive stormslab. Expect this slab to become more reactive when the sun pops out.

Its spring and conditions change wildly depending on aspect, elevation and time of day. Stack the odds in your favour- avoid low elevation, South and West facing slopes in the afternoon!!

Confidence

Moderate

Avalanche Summary

Thursday our field team found a reactive storm slab on a steep alpine features, that failed 20cms deep and 5m wide.

Loose wet avalanches were also observed from steep south facing terrain, triggered by warm temps and strong solar radiation.

Near neighbours just outside the park are reporting a reactive surface hoar layer down 20-30cms that exists on high elevation north facing slopes. Dig down and have a look for this layer before jumping into large or committing features.

Snowpack Summary

The upper snowpack constantly changes in the Spring. Dry to moist (elevation dependent) snow is sandwiched by multiple melt-freeze crusts. High Alpine, North-facing slopes hold cold, dry snow, while S'ly slopes warm up daily, creating another crust for snow to fall upon.

A storm slab exists at ridgecrest and along cross-loaded slopes, Treeline and Alpine.

Persistent weak layers linger in the mid-snowpack but will likely remain inactive.

Weather Summary

Fluctuating freezing levels and snow/rain squalls will give a mixed bag of weather.

Tonight Flurries giving 8cm of snow. Alp low -6°C. Ridge wind SW 30km/h, gusting 65. Freezing Level (FZL) 1200m.

Fri Clouds with sun, isolated flurries. Alp high -5°C. Ridge wind SW 20-30. FZL 1700m.

Sat Sun, cloud, and flurries. Alp high -6°C. Ridge wind W 20-40km/h. FZL 1500m.

Sun Mix sun & cloud. Ridge wind W 10-30. FZL 1900m.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.