Seavey Pass
Peak · 9,120 ft · Yosemite corridor
Seavey Pass is a 9,120-foot saddle in the Yosemite corridor's high Sierra, sitting at the junction of major drainages and snow travel routes. Winter and spring access requires avalanche awareness and solid route-finding skills.
Wind accelerates through the pass as thermals build during the day. The 30-day average wind of 11 mph masks afternoon gusts pushing 30 mph. Morning calm windows close by mid-day. Snowpack stability is the dominant constraint from December through May.
Over the past 30 days, conditions here have averaged a NoGo Score of 34 with temperatures near 25°F and winds at 11 mph. The week ahead will track the typical spring pattern: cooler mornings with lighter wind, steepening afternoon thermals, and lingering snow above 9,000 feet. Check avalanche forecasts from the Sierra Avalanche Center before any winter or early-season approach.
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About Seavey Pass
Seavey Pass sits at the intersection of the high Sierra's eastern and western drainages, roughly 45 miles northeast of Yosemite Valley. The pass is accessible via Highway 120 (Tioga Pass route) when open, typically from late spring through early fall. Winter approach requires climbing or ski mountaineering skills and stable snowpack. The pass is a natural waypoint on backcountry routes linking the Yosemite high country to the Mono Basin. Base popularity is low; most traffic is dispersed mountaineers and ski-touring parties rather than day-hikers.
Conditions at Seavey Pass follow a steep elevation gradient. The 30-day average temperature of 25°F and 30-day average wind of 11 mph capture the late winter and spring signature; summer temperatures climb to the low 30s to mid 40s Fahrenheit, while winter minima dip to 11°F or lower. The pass sits in a wind funnel; afternoon thermals accelerate flow off the eastern escarpment, regularly pushing gusts to the 30-mph ceiling recorded over the last year. Morning windows are calmer but brief. Snowpack persists through May in most years. Crowding averages 3 on a 10-point scale, reflecting the specialized access requirements.
Head to Seavey Pass for winter ski traverses, spring mountaineering ascents, or summer ridge-running when snow has fully cleared. The pass suits experienced alpine travelers comfortable with avalanche terrain, map-and-compass navigation, and self-sufficiency. Expect to find minimal infrastructure or established camping; water is snow-melt or seasonal runoff. Afternoon wind makes this a morning-only destination in spring and summer; skip the mid-day approach if you're exposed to wind-slab or cornicing hazards. The low base popularity means no parking pressure, but also no ranger presence or rescue infrastructure close by.
Seavey Pass pairs naturally with traverses toward Cathedral Range or Mono Basin crossings. Nearby Tioga Pass (11,056 feet) sits east and higher; Tenaya Lake lies west. Backcountry skiers often use Seavey as a waypoint rather than a destination, threading routes between high-Sierra huts or passes. The SAC avalanche center covers this zone; check stability bulletins before committing to any snow approach, especially in March and April when wind slabs and temperature cycling create instability.