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Avalanche Forecast

Archived

Apr 1st, 2022–Apr 2nd, 2022

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

Regions

South Coast Inland.

Cold, winter snow may still be found in north facing terrain in the high alpine. Dust on crust everywhere else. Assess big alpine lines for windslab hazard before choosing to ride them.

Confidence

Moderate - The snowpack structure is generally well understood. Uncertainty is due to the timing, track, & intensity of the incoming weather system.

Weather Forecast

FRIDAY NIGHT: Mostly cloudy. 0-5 cm of snow expected. Light southwest ridgetop wind trending to strong at high elevations. Freezing level falling to between 750 and 1200 m.

SATURDAY: Mostly cloudy with possible mid-day sunny breaks. Light snow/rain expected, up to 7 cm for the Coquihalla. Light southwest ridgetop wind trending to moderate west at high elevations. Freezing level rising to around 1500 m through the day. 

SUNDAY: Mostly cloudy. Light to moderate snow/rain expected overnight and through the day. Up to 10 cm in the Duffy Lake area. Moderate southwest ridgetop wind, trending to extreme at high elevations. Freezing level around 1500 m. 

MONDAY: Mostly cloudy. 10-20 cm of snow expected overnight and through the day. Moderate southwest ridgetop wind, trending to extreme at high elevations. Freezing level falling to around 1300 m.

Avalanche Summary

No new and notable avalanches were reported on Friday before 4 pm. 

If you are getting out in the backcountry, and have photos, conditions, avalanche observations, or even just funny stories to share, consider making a post on the Mountain Information Network.  

Snowpack Summary

5-10 cm of new snow covers a strong, supportive crust on all aspects into the alpine, and settled, soft snow above 2200 m in shaded alpine terrain. With strong southwest wind at high elevations, reactive windslabs may form on isolated, alpine features.

The rest of the upper snowpack consists of a number of crust/facet/surface hoar interfaces buried in March that seem to have bonded during the recent warm weather. 

The mid and lower snowpack are generally strong and well bonded. 

Terrain and Travel

  • Make observations and assess conditions continually as you travel.
  • Wind slabs may be poorly bonded to the underlying crust.
  • 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.

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.