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Avalanche Forecast

Archived

Feb 3rd, 2024–Feb 4th, 2024

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 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.
Below Treeline
Natural avalanches unlikely.

Regions

Glacier.

With cooling temperatures, the rain soaked snowpack will gradually freeze into a firm crust. Expect poor quality skiing & hazardous travel conditions.

Confidence

Moderate

Avalanche Summary

Over the past week, warm temps and light rain has triggered isolated large avalanches in steep gullies above the highway.

A widespread natural avalanche cycle was observed from all aspects and elevations throughout the week with very large avalanches running full path. Avalanche control within and adjacent to the park produced numerous avalanches up to size 3.5 with some showing wide propagation.

Snowpack Summary

The recent warm weather and rain has soaked the upper snowpack. This is beginning to freeze into a crust as temps cool, making for difficult and hazardous travel conditions at all elevations and on all aspects.

A sun crust (Jan 3), down 60-80cm, can be found at and below Tree-line on S-SW aspects. Wet surface avalanches have been stepping down to this layer and deeper within confined gullies.

The Dec 1 surface hoar layer, down ~120cm, is decomposing.

Weather Summary

Flurries & light snow through the weekend with temperatures gradually returning to seasonal norms.

Tonight: Isolated flurries. Alpine low -7°C. Freezing level (FZL) 1000m. Light east ridgetop winds.

Sun: 4cm. Alpine high -6°C, FZL 1300m. Light east wind.

Mon: Cloudy with sunny periods Trace precip. Low High -5°C. FZL 1400m. Light ridgetop wind.

Tues: 4cm, High -5°C. FZL 1500m. Light ridgetop wind.

Terrain and Travel Advice

  • A crust on the surface will help bind the snow together, but may make for tough travel conditions.
  • Closely monitor how the new snow is bonding to the crust.

Problems

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.