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Avalanche Forecast

Archived

Feb 13th, 2024–Feb 14th, 2024

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

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Look for signs of instability and be prepared to step back.

There is some uncertainty in how the snowpack will react to above freezing temperatures in the alpine.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the past few days.

Snowpack Summary

Previous southwesterly winds have redistributed recent new snow into wind slabs. The snow surface may become moist on steep south facing slopes in the afternoon.

A layer of surface hoar may be found down 10 to 30 cm in sheltered terrain.

A thick melt-freeze crust is found down 50 to 100 cm. this layer is not currently a concern but may be after being impacted by warm temperatures for a prolonged period.

Weather Summary

Tuesday Night

Mostly clear with no new snow expected. 5 to 15 km/h outflow wind. Above freezing layer above 1400 m.

Wednesday

Clear skies with no new snow expected. 5 to 20 km/h outflow wind. Above freezing layer above 1400 m.

Thursday

Clear skies with no new snow expected. 5 to 20 km/h outflow wind. Treeline temperature -1°C.

Friday

Clear skies with no new snow expected. 20 to 30 km/h southeast alpine wind and 10 to 20 km/h outflow wind at valley bottom. Treeline temperature -4°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.
  • Be alert to conditions that change with elevation and sun exposure.
  • Watch for unstable snow on specific terrain features, especially when the snow is moist or wet.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.