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Avalanche Forecast

Archived

Apr 12th, 2024–Apr 13th, 2024

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

Regions

Lizard-Flathead, South Rockies, Akamina, Flathead, Lizard, Bull, Crowsnest North, Crowsnest South, Elkford East, Elkford West.

Warm sunny weather will cause wet avalanches, especially on sun-exposed slopes.

Confidence

Moderate

Avalanche Summary

A few small (size 1) avalanches were reported over the past few days including small wind slabs on north-facing alpine slopes and wet loose avalanches on sun-exposed slopes.

Wet loose avalanches will occur over the next few days as skies clear and the freezing level rises to mountain tops.

Snowpack Summary

Expect surfaces to melt and weaken as the freezing level climbs to 2800 m on Saturday. This will occur rapidly on sun-exposed slopes.

Weak layers deeper in the snowpack have shown signs of strengthening and are no longer a concern.

Weather Summary

Friday Night

Clear skies 35 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2100 m.

Saturday

Sunny. 25 km/h southwest ridgetop wind. Treeline temperature +6 °C. Freezing level 2800 m.

Sunday

Sunny. 15 km/h southwest ridgetop wind. Treeline temperature +8 °C. Freezing level 3000 m.

Monday

Mix of sun and cloud. 40 km/h southwest ridgetop wind. Treeline temperature +5 °C. Freezing level 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Minimize your exposure time below cornices.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.