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Avalanche Forecast

Archived

Apr 19th, 2026–Apr 20th, 2026

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

Regions

Glacier.

Warm overnight temperatures will start an all melt, no freeze scenario lasting until Wednesday.

Avoid any exposure to overhead hazard and stick to conservative terrain.

Confidence

Moderate

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

Avalanche Summary

Natural wet loose and wet slab avalanches up to sz 1.5 observed in the highway corridor on Sunday.

Field team in Connaught creek observed a natural size 2 wet loose avalanche on Sunday AM.

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

Snowpack Summary

We are currently experiencing all melt no freeze spring conditions.

Up to 40cms of recent storm snow has become moist - wet on the surface of the snowpack. Below this recent snow, a crust can be found in most locations.

The mid - lower snowpack is well settled but we expect to see some large avalanches as the warm temperatures permeate the snowpack.

Weather Summary

Warm temps with no overnight freeze until Tuesday evening.

Tonight Sunny with cloudy periods. Alpine Low 5°C. Freezing level(FZL) 2700m. Ridgetop wind SW 15-35 km/h.

Mon Sunny with cloudy periods. Alpine high 8°C. FZL 3100m. Wind SW 15 gusting to 40km/h.

Tues Showers. 6mm rain. Alpine High 9°C. FZL 3000m. Wind SW 15 gusting to 40.

Wed Flurries, 7 cm. High 3 °C. FZL 2800m. Wind NE 15-25 km/h.

Terrain and Travel Advice

  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
  • Avoid travelling on slopes below cornices.
  • Keep in mind that the high density of wet avalanches can make them destructive.

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.

Wet Slabs

Wet Slab avalanches are the release of a cohesive layer of snow (a slab) that is generally moist or wet when the flow of liquid water weakens the bond between the slab and the surface below (snow or ground). They often occur during prolonged warming events and/or rain-on-snow events. Wet Slabs can be very unpredictable and destructive.

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.