Burro Lake Pass
Peak · 11,351 ft · Yosemite corridor
Burro Lake Pass is an 11,351-foot peak in the Yosemite corridor of the Sierra Nevada. Wind-exposed alpine crossing with avalanche terrain; best approached in stable snow and calm conditions.
Morning calm gives way to afternoon wind funnels off the lake basin. The 30-day average wind of 15 mph masks gusts to 30 mph by mid-day. Expect variable snow cover and steep sidehills; descents require solid avalanche assessment.
Over the last 30 days, Burro Lake Pass averaged a NoGo score of 31.0 with temperatures holding near 25 degrees Fahrenheit and wind averaging 15 mph. The week ahead will show typical late-season volatility; high-pressure windows narrow as spring snowmelt accelerates. Watch the trend chart for wind spikes and temperature swings that signal avalanche instability.
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About Burro Lake Pass
Burro Lake Pass sits at 11,351 feet in the high Sierra, accessible via the Yosemite corridor from Highway 120 or approach routes from Mono County to the east. The pass straddles the rim between Burro Lake to the west and open terrain to the east. Primary trailhead access runs through Inyo National Forest or Yosemite gateway towns including Lee Vining and Mammoth Lakes. Winter and early spring approach requires either boot and crampons or skis; summer travel is marginal due to sustained wind exposure and sparse shelter.
Conditions at Burro Lake Pass are dominated by high-altitude wind and rapid temperature swings. The rolling 30-day average temperature of 25 degrees Fahrenheit sits 10 to 15 degrees below Yosemite Valley at the same date. Average wind runs 15 mph with peaks to 30 mph, funneling off the lake basin most fiercely from mid-afternoon onward. Crowding is minimal (average 3.0 on the 1-to-10 scale) owing to avalanche exposure and poor trailhead infrastructure. Spring conditions bring wet-slab risk as the snowpack ripens; mid-winter offers firmness but extreme cold and corniced ridges.
Burro Lake Pass suits experienced mountaineers and ski tourers comfortable with avalanche terrain and self-rescue. Summer parties seeking an off-trail high-elevation crossing can use the pass as a connector between Yosemite and Mono drainage systems, but wind and exposure demand early starts and quick descents. Winter travel requires full avy kit, beacon discipline, and stable-slope route-finding. Parking at roadhead is primitive; plan for self-shuttle or overnight bivy. Avoid the pass if SAC avalanche forecast rates unstable or considerable conditions on the specific slope aspects you intend.
Nearby alternatives include Kearsarge Pass to the south (lower, less wind-exposed) and Mammoth Pass to the east (more direct but steeper). Mount Dana, the Yosemite corridor's high point, sits across similar terrain with comparable wind and avalanche hazard. Visitors pairing Burro Lake Pass with a Mono Basin traverse should establish early camp on the eastern side and assess snowpack stability before committing upward.