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Avalanche Forecast

Archived

Apr 23rd, 2024–Apr 24th, 2024

Alpine
Natural avalanches unlikely.
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

South Coast, Powell River, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron, Coquihalla, Harrison-Fraser, Manning, Skagit.

Assess steep lines for wind slabs before committing.

Forecast confidence is limited this time of year due to few observations.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported in the past few days.

If you have any recent photos or observations, please submit them to the Mountain Information Network, observations are limited in the spring.

Snowpack Summary

Up to 10 cm of new snow may accumulate over a crust on all aspects at higher elevations. Small pockets of wind slab could be found on north and east aspects in the alpine. Below treeline rain will keep the snow surface wet or moist where snow still exists. Most below treeline terrain is already snow free.

Weather Summary

Tuesday Night

Increasing cloud with trace amounts of new snow at higher elevations. 10 to 25 km/h southwest alpine wind. Freezing level falling to 1500 m.

Wednesday

Cloudy with up to 10 cm of new snow at higher elevations. 15 to 30 km/h southwest alpine wind. Freezing level around 1400 m.

Thursday

Cloudy with up to 5 cm of new snow at higher elevations. 10 to 20 km/h southwest alpine wind.  Freezing level around 1500 m.

Friday

Mostly cloudy with up to 5 cm of new snow at higher elevations. 5 to 15 km/h southeast alpine wind. Freezing level rising to 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
  • Closely monitor how the new snow is bonding to the crust.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Expect shallow snow cover that barely covers ground roughness.

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.