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Avalanche Forecast

Archived

Mar 24th, 2024–Mar 25th, 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, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Coquihalla, Harrison-Fraser, Manning, Skagit.

Small human-triggered avalanches are possible where new snow has been wind-loaded over a hard crust.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the region.

If you are heading into the backcountry please consider posting your observations to the Mountain Information Network. We read every report!

Snowpack Summary

5-15 cm of recent snow sits over a thick crust capping a moist upper snowpack.

The mid snowpack contains a couple of crusts with overlying surface hoar or facet crystals which have not produced recent avalanche activity and are not a concern at this time.

The lower snowpack is well-settled and bonded.

Weather Summary

Sunday night

Increasing cloud with flurries starting, bringing a trace of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1200 m.

Monday

Cloudy with up to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1400 m.

Tuesday

Cloudy with up to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1400 m.

Wednesday

Mostly cloudy with a trace of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1700 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.
  • Wind slabs may be poorly bonded to the underlying crust.
  • A crust on the surface will help bind the snow together, but may make for tough travel conditions.

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.

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.