Mount Shasta
Avalanche danger
Highlights
If you choose to travel among Mount Shasta’s alpine terrain, ensure your ability level matches your objective. A full mountaineering kit and strong self-arrest skills are essential. Remain alert for isolated wind drifts, slide-for-life surfaces, overhead hazards, and variable surface conditions.
Avalanche Discussion
A solid weather window and generally good climbing conditions persist over Mount Shasta. Despite spring-like weather at lower elevations, the alpine still holds a wintry feel. A winter ascent of Mount Shasta carries significantly higher risk and should only be attempted by experienced climbers and ski mountaineers. Slopes above 10,000 feet and steeper than 35 degrees hold slide-for-life surfaces and require the proper use of an ice axe and crampons. Wear a helmet and watch for rime and rockfall. Strong self-arrest skills are crucial.
Recent observations indicate the snowpack has adjusted well to the gradual warm-up, with no reports of unstable wind-drifted or wet loose snow. Continue to use caution where blowing snow is observed, old wind deposits are present, or snow surfaces begin to lose cohesion. Even small amounts of unstable snow can have serious consequences in the wrong spot. Communicate with your partners and be prepared to change plans or objectives if you observe signs of instability, such as shooting cracks or point releases.
Dominant high pressure is not all bad. When soft powder snow is absent, the snowpack can offer the next best thing: corn snow. While a true overnight refreeze has been limited, residual cooling and long nights have been enough to harden surfaces, allowing them to soften again during the day. This process has been most pronounced on steep, sun-exposed aspects near and above treeline, though conditions remain variable and not all solar slopes may soften. Terrain features such as bowls and gulches offer the best chances to find ripening snow.
If you make it into the backcountry, please consider posting an observation. We'd love to hear from you.
Generally high snow levels this season have left shallower depths across lower elevations of the forecast area, including in the Eddy Mountains, Castle Lake, and on the east side of Mount Shasta. Snow surfaces consist of a highly variable and sometimes hazardous mix of crusts (often breakable), wet and sticky snow, wind-affected snow, frozen ski tracks, and icy patches on exposed features. Ski and ride with caution. Some decent snow can be sleuthed out.
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