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Avalanche Forecast

Archived

Feb 5th, 2018–Feb 6th, 2018

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
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.

Warm temperatures and rain have created difficult riding conditions: heavy down low and icy/crusty up high.

Confidence

High - The weather pattern is stable

Weather Forecast

Tuesday: Flurries (5 cm of snow possible) / Light north west winds / Freezing level 1000mWednesday: 5-15mm of rain / Light southwest winds / Freezing level 1000m rising to 2000m by noonThursday: Wet flurries (5-10cm snow) or rain / Light westerly winds / Freezing level near 2000m

Avalanche Summary

No new avalanches were reported on Monday.

Snowpack Summary

Rain and warm temperatures throughout the weekend saturated the upper snowpack. At treeline and below, approximately 20cm of wet snow overlies either a crust or moist snow from Monday's rain event a week ago. In high alpine areas like Sky Pilot and the Chehalis Range the more recent (saturated) snow has refrozen into a solid crust.The mid and lower snowpack are well consolidated with no significant layers of concern.

Problems

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.