Lost Cannon Peak
Peak · 11,007 ft · Yosemite corridor
Lost Cannon Peak rises to 11,007 feet in the Yosemite corridor of California's Sierra Nevada. A high alpine peak with avalanche terrain, it sits exposed to afternoon wind and afternoon crowds are rare.
Wind averages 11 mph but peaks in afternoon, funneling off nearby ridges. Temperatures hang around 33 degrees Fahrenheit across the 30-day rolling average. Morning calm typically breaks by midday. Snow stability requires assessment in spring; cornices form on the lee side after storm wind.
Over the last 30 days, conditions averaged a NoGo Score of 32 with wind at 11 mph and temperatures holding at 33 degrees Fahrenheit. The week ahead shows typical spring volatility: watch for afternoon wind pickup and brief warm spikes. Plan early starts to avoid the afternoon deterioration.
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About Lost Cannon Peak
Lost Cannon Peak sits at 11,007 feet in the Yosemite corridor, part of the high Sierra spine between the main range crest and the eastern scarp. Access is primarily via Highway 120 corridor routes; from the west, drive through Yosemite National Park or approach from the Mono Basin to the east. The peak sits in avalanche terrain classified by the Sierra Avalanche Center. Trailheads serving this zone require a high-clearance vehicle or a longer walk from Highway 120. No direct summit trail exists; approach routes involve cross-country navigation and scrambling across talus and snow.
Spring conditions at Lost Cannon Peak are unstable. The 30-day rolling average temperature of 33 degrees Fahrenheit masks daily swings from below freezing overnight to 40+ degrees in afternoon sun. Wind averages 11 mph but peaks to 39 mph in the 30-day window, with strongest gusts arriving in afternoon as thermal circulation intensifies. Crowding averages a 3 out of 10 (very light), making this a genuinely remote objective. Summer brings warming and drying but also afternoon thunderstorms and higher foot traffic. Fall offers stable weather but rapid cooling shortens the season window. Winter closes the peak to all but the most experienced mountaineers; snowpack depths exceed 10 feet and avalanche risk dominates.
Lost Cannon Peak suits experienced climbers and mountaineers comfortable with route-finding, scrambling, and avalanche terrain evaluation. Spring ascents demand early starts and a firm understanding of wet-slab risk and corn condition. The peak is not a beginner scramble. Parking is sparse near trailheads; arrive before dawn on weekends to secure a spot. Carry a beacon, probe, and shovel if approaching in spring. The remote setting and avalanche terrain mean self-rescue is the only option; cell service is absent or unreliable. Solo travel is common but not recommended given the exposure.
The Yosemite corridor offers comparable peaks within the same 11,000-foot band. Cathedral Range summits to the west see slightly higher crowds but similar wind and temperature profiles. The Mono Basin to the east provides drier approaches but longer approach marches. Lost Cannon Peak's low base popularity (0.2) reflects its lack of a marked trail and avalanche exposure. Visitors committed to this zone typically combine it with adjacent peaks or multi-day ski or climbing traverses.