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Avalanche Forecast

Archived

Apr 15th, 2024–Apr 16th, 2024

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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

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

New snow and wind may build new isolated pockets of wind slab in the alpine.

A surface crust at most elevations will limit potential for avalanches.

Confidence

Moderate

Avalanche Summary

Strong sunshine and rising temperatures produced loose wet avalanches over the past few days.

If you head into the backcountry, please submit any observations or photos to the Mountain Information Network.

Snowpack Summary

A widespread surface crust likely exists at all elevations, except on high north-facing slopes which is expected to limit avalanche activity. Small pockets of wind-affected dry snow still exist on north-facing alpine slopes.

Below treeline elevations have minimal snow cover, if any at all. Expect challenging travel conditions with hazards like rocks, stumps and open creeks.

Weather Summary

Monday Night

Cloudy with 5 to 20 cm of new snow. 30-50 km/h southwest ridgetop wind. Freezing level drops to 700 m by the morning.

Tuesday

Mostly cloudy with up to 5 cm of snow. 20-30 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level around 1200 m.

Wednesday

Sunny with cloudy periods. 10-20 km/h northerly ridgetop wind. Treeline temperature -1 °C. Freezing level around 1700 m.

Thursday

Clear skies. 10-20 km/h northerly ridgetop wind. Treeline temperature -1 °C. Freezing level around 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Make observations and assess conditions continually as you travel.

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.