Tower No. 4
Peak · 7,738 ft · Kings Canyon & Sequoia corridor
Tower No. 4 is a 7,738-foot peak in the Kings Canyon and Sequoia corridor of California's Sierra Nevada. A moderate scramble with avalanche terrain, it sits above the eastern Sierra's lake basins and sees low baseline foot traffic.
Wind averages 8 mph over the last month but can spike to 18 mph, typically building in afternoon thermals off the adjacent lake and ridgelines. Morning ascents are calmer. Temperature lingers in the low 40s Fahrenheit, and snowpack persists into late spring. Exposure on the approach dictates stability.
The 30-day rolling average shows a NoGo Score of 35, with temperature holding at 41 degrees Fahrenheit and wind at 8 mph. Peaks to 65 and drops to 5 reflect week-to-week swing driven by mountain-wave events and cold fronts off the Pacific. The week ahead follows the same pattern: Tuesday and Wednesday mornings are typically your safest window; expect wind to pick up by midday Thursday and Friday.
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About Tower No. 4
Tower No. 4 sits at the convergence of alpine lake basins in the high Sierra, roughly 90 minutes by vehicle from the Kings Canyon Scenic Byway (Highway 180) or Sequoia National Park's main corridor. The peak is accessed via scrambling routes from the eastern approach, with trailheads near Kearsarge Pass or the Onion Valley Road. Winter and early spring routes require avalanche awareness; rockfall and loose scree dominate the descent. The location sits in ESAC avalanche center terrain, meaning backcountry forecasts and stability tests are mandatory before heading up during or immediately after snowfall.
Over the past month, conditions have been highly variable. The 30-day average score of 35 masks swings from a low of 5 to a high of 65; this volatility is typical for spring in the high Sierra, where warm days trigger wet slides and cold snaps restore stability. Temperature sits at a mean of 41 degrees Fahrenheit with elevation-driven frost returning after sunrise. Wind averages 8 mph but gusts to 18 mph in afternoon thermals funneling off the lake systems. Crowding is minimal (2.0 on a rolling scale), a reflection of the peak's distance from major trailheads and its technical scrambling requirement. Expect melt and wet-slab risk from noon onward on warm days.
Tower No. 4 suits experienced scramblers and backcountry travelers who combine peak-bagging with avalanche-terrain navigation. Solo ascents are common but not advised during unstable snowpack windows. Parking near the approach trailhead fills early on weekends, and the road itself may not be fully clear until late spring. Plan a pre-dawn start to avoid afternoon wind and to be off the peak by midday. Carry a probe, shovel, and beacon; check the ESAC bulletin before departure. The low baseline popularity (0.2) means you will encounter few other parties, which simplifies logistics but increases self-rescue exposure.
Nearby alternatives include Kearsarge Peak and Forester Pass, both on similar approach roads and subject to identical wind and avalanche dynamics. The open lake basins immediately east see stronger afternoon wind and reflect a higher NoGo Score; Tower No. 4 is typically calmer due to partial shelter from the ridgeline. Kearsarge Peak is slightly lower (12,598 feet) and more frequently visited; Tower No. 4 offers less traffic and more technical interest for climbers comfortable with exposure. Visit the Sierra Crest region after a stable-snow forecast and warm, settled weather window.