Copper Mine Peak
Peak · 12,345 ft · Eastern Sierra corridor
Copper Mine Peak rises to 12,345 feet in the Eastern Sierra corridor, a high-alpine objective with seasonal snowpack and exposure to wind funneling off the Sierra crest.
Winter and spring dominance of freezing temperatures and moderate wind averaging 8 mph, with afternoon gusts common. Avalanche terrain defines the approach; snowpack stability deteriorates rapidly in afternoon sun. Plan ascents for calm mornings before thermal wind redevelopment.
Over the past month, Copper Mine Peak averaged 37 NoGo Score with temperatures hovering at 30 degrees Fahrenheit and average wind of 8 mph; the 30-day max wind reached 28 mph. The week ahead will likely track similar patterns unless a system pushes through the Sierra crest. Watch the trend charts for afternoon wind spikes and temperature swings tied to elevation and season.
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About Copper Mine Peak
Copper Mine Peak stands at 12,345 feet on the eastern flank of California's Sierra Nevada, accessed via the Eastern Sierra corridor highways. The location sits in high-alpine terrain with direct exposure to westerly flow funneling down the crest. Approach via U.S. 395 and local forest service roads into the Inyo or Mono drainage. Drive times from Lone Pine or Lee Vining run 1.5 to 2 hours depending on trailhead choice and road condition. Winter and spring require four-wheel drive or chains; summer access opens by late June in most years.
Copper Mine Peak operates under winter and spring conditions for eight months of the year, with temperatures averaging 30 degrees Fahrenheit and rarely exceeding 44 degrees even in peak summer. The 30-day average wind of 8 mph masks afternoon acceleration; max gusts in the rolling month reached 28 mph. Crowding stays minimal (averaging 2.0 on the scale) due to high elevation, technical terrain, and avalanche exposure. Late September through early October sees the most stable snowpack transition; December through March sees heaviest snow loading and highest instability. Afternoon thermal winds peak mid-afternoon and fade by dusk.
Copper Mine Peak suits experienced mountaineers and climbers comfortable with avalanche terrain and crevasse hazard. Scramble approaches require Class 2-3 scrambling; ski descents demand backcountry avalanche education and beacon, probe, shovel proficiency. Plan ascents for first light before afternoon wind and sun-driven slough. Parking at trailheads fills slowly except during holiday weekends and the first week after Highway 395 opens fully in spring. Solo travel is common; guided groups are rare. Most visits occur during stable-weather windows; high wind or new snow closes the objective to all but expert parties.
Nearby alternatives in the Eastern Sierra include Inyo Crest peaks to the south and White Mountains to the east; both offer lower avalanche commitment and faster access. Mount Inyo and the Glass Mountain ridges provide comparable elevation and wind exposure but gentler approach terrain. For climbers seeking higher technical climbing, the Sierra's central crest (Mount Whitney area) lies two to three hours south and draws far larger crowds. Copper Mine Peak's isolation and avalanche terrain keep it quiet; that same character demands full winter mountaineering competency and current avalanche forecasts from the Eastern Sierra Avalanche Center.