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Avalanche Forecast

Archived

Nov 24th, 2024–Nov 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.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Coquihalla, Manning, Skagit.

Continued flurries through the next few days combined with wind at upper elevations will keep wind slabs as the main concern.

Confidence

Low

Avalanche Summary

We have not had any reports of avalanche activity. However, riders could still trigger an avalanche, particularly in wind-loaded terrain features at treeline and alpine elevations.

Please consider sharing any observations you have on the Mountain Information Network.

Snowpack Summary

Around 100 cm of snow can be found at alpine elevations, while the snowpack depth drops rapidly at lower elevations.

The snowpack is generally consolidated and bonding well, though hard wind slabs may persist on the surface at higher elevations.

Various melt-freeze crusts are found in the bottom half of the snowpack but are not avalanche concerns.

Weather Summary

Sunday Night

Mostly cloudy with 1 to 2 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 600 m

Monday

Mostly cloudy with scattered flurries, accumulation 1-3 cm. 15 to 25 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

Tuesday

Cloudy with scattered flurries, accumulation 1-2 cm. 20 to 30 km/h northwest ridgetop wind. Treeline temperature -3 °C. Freezing level 800 m.

Wednesday

Mostly cloudy. 25 to 50 km/h northwest ridgetop wind. Treeline temperature -4 °C. Freezing level 700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Be cautious of buried obstacles, especially below treeline.

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.