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Avalanche Forecast

Archived

Feb 7th, 2019–Feb 8th, 2019

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

South Coast.

Stiff wind slabs may continue to be reactive to human triggers in the alpine.

Confidence

High -

Weather Forecast

FRIDAY: Cloudy with new snow amounts up to 10 cm. Treeline temperatures near -5 and ridgetop winds light from the northeast.SATURDAY: A mix of sun and cloud. Treeline temperatures near -8 and ridgetop winds moderate from the northeast. SUNDAY: Mostly sunny with treeline temperatures near -6. Ridgetop winds mostly light from the northeast with strong gusts.

Avalanche Summary

Loose dry sluffing from steeper terrain features up to size 1.On Monday, a MIN report from Mt. Anif showed substantial wind loading and a reactive wind slab problem at treeline and alpine elevations. Check it out HERE.

Snowpack Summary

In the alpine, 40-60 cm of wind affected snow sits above a crust or old wind pressed snow surfaces. This tapers significantly below treeline and new surface hoar is forming. Strong outflow winds have redistributed and formed isolated wind slabs at most elevations. Loose dry sluffing within the recent snow can be found in steeper terrain features. The mid-pack is well-settled and strong.

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.