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Avalanche Forecast

Archived

Apr 18th, 2026–Apr 19th, 2026

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

Regions

Glacier.

Rising temperature will increase the avalanche hazard throughout the day on Sunday.

Start / finish your day early and avoid exposure to solar slopes during the heat of the day.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of warming will affect the snowpack.

Avalanche Summary

Two reports of skier triggered size 2 slab avalanches on Friday. One from from Quartz creek, and a second on the Thorington.

Another skier triggered size 2 slab avalanche was reported on the Youngs peak headwall on Thursday. Neighboring areas also reported several skier triggered slab avalanches on alpine north aspects.

A group of skiers also reported triggering a size 2 on Video Peak on Wednesday

Snowpack Summary

A surface crust has formed on all but high north aspects. This surface crust is breaking down later in the day with warming.

Up to 40cms of new snow sits on top of a variety of previous old spring surfaces - mainly a moist/wet crust, and pockets of dry snow on high N aspects.

Below treeline expect strong diurnal swings, with crust and refrozen tree bombs/avalanche debris in the AM, and soft sticky snow in the PM.

Weather Summary

Stable weather with high pressure sets up over the region.

Tonight Clear periods. Alpine Low 0°C. Freezing level(FZL) 1100m. Ridgetop wind SW 15 km/h.

Sun A mix of sun and cloud. High 6 °C. FZL 2800m. Wind SW 20 gusting to 45km/h.

Mon Sunny with cloudy periods. Low 4°C, High 8 °C. FZL 3100m. Light wind.

Tues Sun and cloud with isolated showers. Trace precipitation. Alpine High 10 °C. FZL 3200m. Wind SW 15 gusting to 50.

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
  • Avoid travelling on slopes below cornices.
  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.

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.

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.