Mount Shasta

 Mostly cloudy skies today will transition to snow showers this evening, with periods of heavy snowfall possible. The new snow will accumulate on various firm surfaces. While the avalanche risk is low with this initial wave, it will increase as snow accumulates over the weekend. It's a good time to start considering avalanche safety as we enter a stretch of wintry weather.

After a dry spell since our late November storm, the weather is set to change in the coming days. The snowpack remains firm and crusty in most areas. December's short days and low sun angle may have preserved some soft snow in cold, north-facing hollows, but those patches are brief before encountering firm, uneven surfaces again. Hidden hazards like rocks and logs remain a concern as fresh snow begins to cover them.

Currently, snow depths include 51 inches at treeline on Mount Shasta, 34 inches at Castle Lake, and 37 inches at the Mount Eddy weather station. Backcountry access has been challenging without a snowmobile. Siskiyou County is working to clear the Everitt Memorial Highway, aiming for completion by the weekend, while Castle Lake Road remains closed.

Two storm systems are on the way: a smaller one tonight, followed by a stronger system this weekend, which could bring several feet of snow accompanied by strong winds. Avalanche risk will grow with these storms, so it’s critical to assess conditions. There are no identified weak layers in the snowpack, but pay attention to how the new snow bonds to the old, firm base, along with wind loading and total accumulation. 

For those heading out, remember: if the snowpack is in question, terrain is your answer. Otherwise, enjoy opening day at the Mount Shasta Ski Park!