Gabbro Peak
Peak · 11,000 ft · Yosemite corridor
Gabbro Peak is an 11,000-foot granite summit in the Yosemite corridor's high Sierra, accessible via Highway 120. Exposed ridgeline with afternoon wind dominates; best visited in calm morning windows.
Wind averages 15 mph and frequently exceeds 30 mph by mid-afternoon, funneling off the adjacent high lakes. Morning hours before 10 am offer relative calm; avoid the peak after 2 pm. Temperature swings 11 to 40 degrees Fahrenheit across the year; snow persists into early summer.
Over the last 30 days, conditions averaged a NoGo Score of 31 with wind around 15 mph and temperatures near 25 degrees. The 7-day outlook shows typical late-spring volatility: expect wind peaks in early afternoon and crowding under 3 on most days. High-elevation snowpack remains variable; check avalanche forecasts from SAC before any winter or early-spring approach.
30 days back / 7 days forward
Today's score by factor
About Gabbro Peak
Gabbro Peak sits at 11,000 feet in the high Sierra directly east of Tenaya Lake, accessed via Highway 120 (Tioga Road) in the Yosemite corridor. The summit lies on granitic terrain typical of the Cathedral Range; the approach traverses alpine meadow and talus slopes with minimal tree shelter. Primary gateway is Tuolumne Meadows, roughly 45 minutes from the peak on foot from designated trailheads. Parking fills quickly on weekends when Highway 120 is fully open; arrive before 7 am or use weekday mornings to secure a spot.
The 30-day average wind of 15 mph underestimates afternoon gusts, which regularly exceed 30 mph as air accelerates off the high lake basins to the east. Temperatures average 25 degrees across rolling months but swing from 11 degrees in winter to 40 degrees in late summer, making seasonal timing critical. Spring (late May through early June) brings wet-slab avalanche risk on north aspects; stable travel windows depend on freeze-thaw cycles and SAC forecasts. Crowding remains low (averaging 3 on the scale) because the peak attracts only experienced peak-baggers and strong hikers; few casual visitors venture to 11,000 feet.
Gabbro Peak suits mountaineers and high-Sierra peak-collectors comfortable with exposed granite, scrambling, and self-rescue. Wind and temperature expose weak and unprepared hikers; the peak demands mountain sense, not just fitness. Plan for the shortest possible summit window; many experienced climbers depart the car by 6 am, summit by 10 am, and descend before afternoon wind rises. Carry extra layers, a wind-resistant shell, and navigation tools. Early-season ascents require ice axe, crampons, and avalanche awareness; the SAC Tahoe zone forecast is mandatory reading before April through June.
Nearby peaks Cathedral Peak and Fairview Dome offer slightly lower elevation (10,911 and 10,456 feet) with similar exposure but faster access. Tenaya Lake offers calmer mid-day paddling if wind becomes prohibitive for climbing. The Yosemite corridor as a whole closes Highway 120 in winter and early spring; Gabbro Peak is reachable only May through October, with September and early October providing the most stable weather and lowest wind variability.