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Avalanche Forecast

Archived

Dec 1st, 2018–Dec 2nd, 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

Northwest Inland.

We currently have very few observations in this region. Please post your observations to the Mountain Information Network. (MIN)

Confidence

Moderate - Due to the number of field observations

Weather Forecast

Overnight SATURDAY: Partly cloudy / Alpine Low -12 / Light, northeast wind / Freezing level valley bottom.SUNDAY: Mix of sun and cloud / Alpine high -10 / Light, northeast wind / Freezing level valley bottom.MONDAY: Sunny / Alpine high -12 / Light, northeast wind / Freezing level valley bottom.TUESDAY: Sunny / Alpine high -14 / Moderate, northwest wind / Freezing valley bottom.

Avalanche Summary

No recent avalanches have been reported. However, we currently have very limited observations. If you have been out, please submit any observations to the Mountain Information Network MIN.

Snowpack Summary

There is up to 20 cm of recent storm snow sitting on a crust at upper elevations. Expect to find an early season crust near the bottom of the snowpack in many areas. Recent reports suggest there is an average of 60-120 cm of snow in the alpine. This decreases dramatically with elevation where the primary hazards are rocks, stumps, and open creeks. We currently have very limited snowpack observations, so it is critical to supplement this information with your own observations.

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.