Mount Shasta
Avalanche danger
Highlights
A weak storm this morning should not change the avalanche danger - generally safe conditions exist. Stay alert for wet snow instabilities on steep, warm slopes and keep an eye out for unstable wind-drifted snow high on Mount Shasta.
Other mountain hazards include extreme winds, rock and icefall, and firm, icy surfaces with slide-for-life potential. The proper gear and experience are essential for travel in the alpine.
Avalanche Discussion
This morning's weak system may bring light snow accumulations (less than an inch) near and above treeline. If you observe blowing snow, remain vigilant for pockets of wind slab, especially in extreme terrain on Mount Shasta. Wet snow instabilities are expected to be limited with today's cooler temperatures, clouds, and winds despite a poor re-freeze last night. Still, stay alert for unstable wet snow on steep, warm slopes as the day progresses, especially below rock outcroppings. Seek shadier or mellower terrain if you are sinking past your ankles into mushy snow. Giving cornices a wide berth is a good idea as well. As always, be prepared to change your route or objective if you observe signs of unstable snow.
A spring-like snowpack exists across the forecast area. No avalanches have been observed since March 1st. Warm, dry weather and thick melt-freeze crusts in the upper snowpack have provided supportable skiing and riding and corn snow with the right timing.
This season has been defined by warm temperatures and high snow levels. While precipitation amounts are near normal since October 1st, the snowpack is shallow, or non-existent, at elevations below 6,000 feet (see snow survey results in media). Many creeks are running freely on the west side of the forecast area at Castle Lake and in the Eddy Mountains, which present a navigation hazard. Check out the recent observations for conditions updates from around the area.
Climbing: Early‑season ascents are significantly riskier and demand more experience. Expect extreme winds, obscured visibility, frigid wind chills, and potential slide‑for‑life conditions. Rock and icefall remain very much in play. A full mountaineering kit is non‑negotiable: 12‑point crampons (not microspikes), an ice axe, a helmet, and the skills to use them well. Check the Climbing Advisory page for more details about climbing Mount Shasta. Feel free to give us a call if you have questions about your trip - 530-926-9614. We are happy to help!
A search and rescue incident earlier this week serves as a reminder of a few key climbing tips:
- In mountaineering, everything matters. The Swiss cheese model is real—enough tiny holes (mistakes) line up and suddenly there can be a serious problem.
- Know your gear. Crampons should stay on your boots, ice axes should stop you, and both require practice.
- Don’t be high on the mountain late in the day. Turn around by noon or 1 pm, so if you need help, rescuers aren’t starting their work in the dark.
- Self‑rescue is essential. Even getting yourself to a safer, lower spot can make all the difference.
- Carry the 10 Essentials. A bivy sack and an extra puffy might not make for a glamorous night out, but they can make for a survivable one.