East Slopes South

Identify freshly windblown snow at upper elevations and near wind-exposed ridges by its firm or textured appearance and navigate around steep lee slopes where you find wind-blown snow accumulating.

Very large, deep slab avalanches were reported the last week in the southern and central Cascades.  Some of these monsters released naturally several days after the most recent significant winter storm.  Most recently and closest to the East South zone, a large to very large avalanche naturally released on Spiral Butte, just east of White Pass Monday (3/1).  Very large deep slab avalanches (D3-D3.5) released naturally in the Crystal Mt backcountry last Friday, Saturday, and Sunday (2/26-2/28).  These avalanches are large enough that it would be difficult to survive if you were caught in a similar slide.

Treat this ongoing avalanche cycle with respect.  Deep persistent slabs are a low-likelihood, high consequence gamble that has professionals and experienced backcountry travelers alike on edge throughout the region.  It's been a week since the last report of a deep slab avalanche, but with limited information and the devastating consequences of these deep slabs, we continue to keep them in the forecast. Limit your exposure to large avalanche paths, sticking to simpler terrain such as smaller slopes or tree-covered terrain that does not have open slopes above it. Do not linger below large avalanche paths.

Peaks closer to the Cascade crest picked up a few inches of fresh snow driven by steady west winds Saturday and Sunday. Expect to find small fresh wind slabs and cornices on lee slopes near ridge crests. Where you find blowing snow and firm or textured snow surfaces you may find a wind slab or sensitive cornice. Steer around steep features where you find these clues. 

During the ongoing Covid-19 pandemic, continue to follow the latest guidance from local, state, and federal health officials. Avoid unnecessary risks that could impact first responders and stress medical resources.  Wear a mask when appropriate, practice social distancing, and consider recreating closer to home.