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Avalanche Forecast

Archived

Apr 17th, 2025–Apr 18th, 2025

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

Regions

Little Yoho.

The danger rating will start at Low but rise over the day due to solar input and freezing levels to 2500m.

Plan on starting and finishing your day early.

Confidence

No Rating

Avalanche Summary

No recent avalanches have been reported in this region.

Snowpack Summary

Crusts exist on solar aspects to ridgetop and all aspects at treeline and below. North-facing alpine slopes hold 20–40 cm of dry snow. A stiff midpack sits on Jan facets 90 to 150cm, with a settled lower snowpack below. On most slopes, crusts over the slab add strength if thick and frozen.

Weather Summary

Expect temperatures above 2500m in the PM with plenty of solar input and lighter winds. See the image below for more details.

Terrain and Travel Advice

  • Start your day early and be out of avalanche terrain during the heat of the day.

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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.