Avalanche Forecast

Archived

Apr 10th, 2022–Apr 11th, 2022

Alpine

Natural avalanches unlikely, human triggered possible.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Alpine

Natural avalanches unlikely.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Alpine

Natural avalanches unlikely.

Treeline

Natural avalanches unlikely.

Below Treeline

Below Threshold.

Regions

Yukon.

We're expecting a strong north wind event Sunday night into Monday which may form small wind slabs above a slippery melt freeze crust. Avoid terrain being actively wind loaded.

Confidence

High -

Weather Forecast

SUNDAY NIGHT: Trace of snow possible, strong north wind, freezing level at valley bottom.

MONDAY: Scattered cloud cover, potential for some light snow flurries, strong north wind, freezing level at valley bottom.

TUESDAY: Scattered cloud cover, no significant precipitation expected, moderate northeast wind, freezing level at valley bottom.

WEDNESDAY: Clear skies, no significant precipitation expected, moderate northeast wind, freezing level at valley bottom.

Avalanche Summary

A size 1 wet loose avalanche was observed Saturday on a steep south facing slope. A size 1.5 cornice failure was also observed, but it did not produce any slab avalanche activity when it impacted the slope below. This is the only avalanche activity that has been reported in the last week.

Snowpack Summary

A light dusting of fresh snow rests on well settled cold snow on north and east facing slopes, and on a melt freeze crust on south and west facing slopes. The snowpack is strong with no weak layers of concern. Weak facets can be found near the ground, but that interface has gone dormant for the time being.

Cornices are very large and exposure to them should be minimized, especially during warm or windy weather.

Terrain and Travel

Wind slabs are most reactive during their formation.
Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
Minimize exposure to sun-exposed slopes when the solar radiation is strong.

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.