Avalanche Forecast
Regions: Cascades - South East.
Dangerous avalanche conditions will likely develop by the end of the day Tuesday and continue Tuesday night as a powerful storm impacts the region. Loose wet avalanches will become increasingly likely at lower and mid elevations. Slab avalanches are more likely at upper elevations and will be larger on lee slopes with wind drifted snow.
Discussion
With the incoming storm on Tuesday, lower and mid elevations will likely warm quickly. Any new snow that falls prior to a change to rain will become available for loose wet avalanches. If you see rollerballs or natural loose wet avalanches, avoid nearby steep slopes. Â
Storm and wind slabs will build at higher elevations with thicker slabs closer to the Cascade crest and on wind loaded lee slopes. Avoid slopes steeper than 35 degrees with freshly drifted snow.Â
We don’t have any specific information about persistent weak layers still lingering at upper elevations. While most avalanches should be confined to the new snow, new loading over this extended storm cycle will raise the possibility of a larger avalanche breaking into old snow layers.  Â
At low and mid elevations, exposed or shallowly buried ground hazards, like rocks, stumps, and creeks can amplify the consequences of even a small avalanche.
If you’re out testing new holiday gear remember to submit an observation! The easiest way is to post a photo of avalanches or general conditions.
Snowpack Discussion
New Regional Synopsis coming soon. We update the Regional Synopsis every Thursday at 6 pm.