Issued: Wed, Dec 21, 2016 at 8AM

Expires: Wed, Dec 21, 2016

Above 2,500ft Considerable

1,500 to 2,500ft Considerable

Below 1,500ft Moderate

Degrees of Avalanche Danger ?

1. Low
2. Moderate
3. Considerable
4. High
5. Extreme

Avalanche Danger Rose ?

Avalanche Problems ?

Problem Details

Around four feet of new snow fell over the last four days (above 1000ft). Saturday’s snowfall was cold, dry, and fluffy, which makes a weak base for the wetter snow that fell Sunday-Tuesday. Human-triggered avalanches will be likely today on slopes 30 degrees and steeper. The sliding surface will be density interfaces within the new snow, or the new/old snow interface where areas of buried surface hoar reside. Some slides may step down to wind slabs 30-60cm deep, which could lead to large and deadly avalanches.


Recent Avalanche Activity

Recent Weather

Saturday-Tuesday brought 24-48″ of new snow to this zone, with temperatures starting near 16F and rising to 28F. South winds came in strong before letting up Tuesday night. One last wave of heavy snow will hit Tuesday night, with 5-12″ of new snow over the mountains, and perhaps 3-8″ in the valleys.

Additional Info & Media

Even small slides can pile up deep. Stay out of gullies, depressions, and terrain traps. ALWAYS wear a beacon, shovel, and probe and know how to use them.

Posted in Transitional Zone Forecasts.
Erik Stevens

Forecaster: Erik Stevens