Avalanche Forecast

Archived

Feb 3rd, 2024–Feb 4th, 2024

Alpine

Natural avalanches possible, human triggered probable.

Treeline

Natural avalanches unlikely, human triggered possible.

Below Treeline

Below Threshold.

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely, human triggered possible.

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.

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Confidence

Low

Avalanche Summary

No new avalanche observations.

Snowpack Summary

At upper elevations, 10-40 cm of recent dry snow has been redistributed by shifting winds. This recent snow has been observed to be bonding well to an underlying crust, reaching up to 1500 m in White Pass and 1200 m in the Wheaton area.

Weather Summary

Saturday night

Partly cloudy with a trace of snow possible. Southwest ridgetop wind 50-60 km/h. Treeline temperature around -20 °C.

Sunday

A mix of sun and cloud with a trace of snow possible. Southwest ridgetop wind 60-70 km/h. Treeline temperature warming up to -8 °C.

Monday

A mix of sun and cloud with a trace of snow possible. Southwest ridgetop wind <20 km/h. Treeline temperature around -8 °C.

Tuesday

A mix of sun and cloud with a trace of snow possible. Northwest to northeast ridgetop wind 20-30 km/h. Treeline temperature around -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

Recent wind has varied in direction so watch for wind slabs on all aspects.
Extra caution for areas experiencing rapidly warming temperatures for the first time.
Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

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.