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Avalanche Forecast

Archived

Apr 18th, 2025–Apr 19th, 2025

Alpine
Natural avalanches unlikely.
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

Little Yoho.

A cooler day is forecast for Saturday with a few centimetres of snow.

Confidence

High

Avalanche Summary

No new avalanches were observed or reported over the last 24 hours.

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

Saturday: Increased SW winds, mainly cloudy with a few cm of snow possible in the early part of the day. Solar impact should be minimal and alpine temperatures should stay below freezing. See image below for more details.

Terrain and Travel Advice

  • Even brief periods of direct sun could produce natural avalanches.

Problems

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.