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Avalanche Forecast

Archived

Apr 2nd, 2025–Apr 3rd, 2025

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

Regions

Sasquatch, Sasquatch, Coquihalla, Harrison-Fraser, Manning, Skagit.

Avalanches are possible on steep alpine slopes, especially if the sun comes out.

Confidence

Moderate

Avalanche Summary

Reports have been limited in this region. Last week’s warmup triggered large avalanches, including a cornice fall on Thar Peak and wet debris on Cheam Peak (photos below).

Small loose wet avalanches have been observed in recent days and will likely continue during periods of sun.

Snowpack Summary

Expect wet and moist surfaces on sun-exposed slopes. Up to 20 cm of settling snow sits over wet or crusty surfaces. On all but high north-facing alpine slopes, the upper snowpack is wet. Below 1800 m, it has melted substantially making approaches challenging.

Two persistent weak layers are buried within the upper 2 m of the snowpack. Avalanche activity is thought to be unlikely on these layers. However, large triggers like cornices may produce avalanche activity in shallow, rocky start zones.

Otherwise, the snowpack is generally well-settled and strong.

Weather Summary

Wednesday Night

Cloudy with 0 to 1 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature -5 °C.

Thursday

Mix of sun and cloud with 0 to 2 cm of snow above 1500 m. 20 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Friday

Sunny. 10 km/h south ridgetop wind. Treeline temperature +4 °C. Freezing level 2200 m.

Saturday

Mostly sunny. 20 km/h southwest ridgetop wind. Treeline temperature +6 °C. Freezing level 2600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.