East Slopes South
Pericolo valanghe
In sintesi
Where you recreate in the zone may result in very different avalanche hazards. Closer to the Cascade Crest, heavy snowfall and strong winds have built large and sensitive cornices. Large slab avalanches are still possible on steep slopes near and especially above treeline. Areas further from the Cascade crest and at higher elevations may resemble dangerous avalanche conditions found in the Wenatchee Mountains. Check the East Central forecast for more details.
Avalanche Discussion
Following an extended storm cycle that lasted over a week, East South Snotels (Green Lake, Lost Horse) picked up 2-3" of water equivalent while Bumping Ridge picked up a whopping 4.5" of WE(!) with temperatures at all of the stations near and occasionally above freezing during the storm events. You'll likely be able to identify crusts in the upper snowpack throughout much of the terrain following rain events on January 1st up to 6000-6500 ft and then again on January 4th up to 5500 ft or so.
Continue to avoid steep open slopes near and especially above treeline where recent winds will have created deeper drifts near the Cascade crest. It's here you may trigger a large slab avalanche within the recent snowfall. Cornices may easily break off and trigger avalanches on the slopes below as well. Give them a wide berth if traveling along ridgelines.
In the nearby Wenatchee mountains, deadly avalanches are likely to be triggered by a backcountry traveler. In parts of the East South that are at higher elevations and further east of the Crest (areas with a shallower and colder snowpack), you may find similar conditions. Here the worry is that you can trigger an avalanche that releases down to old weak snow near the ground from early December. This setup is especially dangerous because up to recently, many areas barely had enough snow to warrant avalanche concerns.
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.
MEDIA