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Avalanche Forecast

Archived

Feb 18th, 2019–Feb 19th, 2019

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

Regions

Northwest Inland.

Variable amounts of snow will fall across the region. The snow will fall with strong wind, so use particular caution if you find locally deeper deposits.

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

MONDAY NIGHT: Cloudy with light snowfall, accumulation 1 to 3 cm, moderate to strong west wind, alpine temperature -8 C.TUESDAY: Cloudy with light snowfall, accumulation 5 to 10 cm, moderate to strong northwest wind, alpine temperature -7 C.WEDNESDAY: Mix of sun and cloud, light to moderate northeast wind, alpine temperature -10 C.THURSDAY: Mix of sun and cloud, light west wind, alpine temperature -8 C.

Avalanche Summary

No new avalanches were observed in the region on Sunday.

Snowpack Summary

New snow on Tuesday will fall onto a variety of hard slabs, wind-pressed snow, sastrugi, sugary faceted snow, and melt-freeze crust. In sheltered areas at and below treeline, new snow may fall into pockets of feathery surface hoar crystals and soft, faceted snow.In the south of the region, the remainder of the snowpack is well-settled. In the north of the region, 50 to 100 cm of snow may overly two weak layers of surface hoar or faceted grains.

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.