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Issued: Tue, Nov 22, 2016 at 8AM

Expires: Fri, Nov 25, 2016

Above 2,500ft Low

1,500 to 2,500ft Low

Below 1,500ft Low

Degrees of Avalanche Danger ?

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

Avalanche Danger Rose ?

Avalanche Problems ?

Problem Details

Look out for hollow or slabby snow in the top 60cm of snowpack. Pole probing is a great way to do this, as are quick hand pits and snow pits. If you find hard layers sitting over softer layers, treat the slope as suspect and try to assess layer strength and propagation potential. Avalanches are still possible, especially on steep convexities and high, wind loaded slopes steeper than 35 degrees.

Recent Avalanche Activity

The most recent observed avalanches occurred during the last storm cycle, over a week ago. They ranged from size 1 to 3.5, on a variety of aspects, mostly soft slabs (up to 80cm deep) and loose slides, though a few glide avalanches occurred during the warmest period with rain-on-snow.

Recent Weather

Over 11″ of precipitation fell from November 5th – 15th. Snow levels were between 1000 and 3500ft. Up to 12 feet of wet snow fell above treeline, and has settled to a 3-meter deep base at 4000ft, and around 70cm deep at 2800ft.

Temperatures plummeted to the single digits and teens since the last storm. Northwest winds have been moderate.

A few weak storms will try to fight the persistent offshore flow this week. We’re not expecting much more than an inch or two of snow. Friday night-Sunday there is potential for some accumulation as we transition to more onshore flow.

Additional Info & Media

Find ways to minimize your risk when traveling in the backcountry. This means choosing safe uphill tracks, skiing from safe zone to safe zone, and only exposing one person at a time to steep areas. Always travel with a partner trained in avalanche rescue, and carry a beacon, shovel, and probe.

Posted in Transitional Zone Forecasts.
Erik Stevens

Forecaster: Erik Stevens