Mammoth Mountain, California Ski Report

Mammoth Mountain Buried in Powder, Conditions Evolve Rapidly Amid Strong Pacific Storm


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Ski Report for Mammoth Mountain, California

Daily Ski Conditions for Mammoth Mountain, California

Crank up the mittens and wax your board—Mammoth Mountain is currently riding a big winter pulse with heavy, wind-driven snow and rapidly changing lift access that will have powder hounds grinning (and maybe a little nervous about the wind). According to local forecasters, a strong Pacific trough has dumped heavy snow through Christmas with models and local weather analysis calling for multiple feet through the 25th, including an expected 24–34 inches at Main Lodge and much more toward the summit during the event; the Mammoth Snowman forecast shows 28–34” for the 25th and totals topping multiple feet at the top earlier in the system discussion. The Mountain’s official reports and independent trackers both show significant recent accumulation: Visit Mammoth notes “over three feet of snow since 12/23,” echoing the heavy storm story locals are describing.

If you want hard numbers for snow depth, the resort’s season reporting has varied through the storm cycle; OnTheSnow listed a 12" base depth on Dec 24 with limited lifts running, which aligns with rapidly changing operational conditions during the storm. Local observers (Mammoth Snowman and Snow-forecast) emphasize much deeper storm totals at higher elevations and at the summit, where forecasts and model soundings suggest substantially higher accumulations than the Main Lodge base. The summit (11,053 ft) typically sees the deepest totals and forecasters specifically expected the top to pick up well above Main during this system.

Lift and trail availability is fluctuating with the wind and snow: earlier reports during the storm listed roughly 10–16 lifts open out of 25 depending on conditions and closures for wind or avalanche control, with canyon lifts used for access only in some reports. Trail openings are similarly variable—many main groomed runs at Main Lodge and parts of the frontside are being prioritized, but some terrain (especially backcountry access and canyon runs) remains limited until base builds and avy work is completed.

Weather on the hill is stormy and gusty: Mammoth Mountain’s mountain weather statements and local reports describe strong southwest winds with gusts into the 40–65 mph range and widespread freezing fog during active periods, plus heavy precipitation and low snow levels dipping toward 4500–6000 ft as the system cools. Temperatures are cold enough aloft for snow, with valley-level readings over short windows in the 20s–30s°F and colder at elevation per local weather products. The short-range forecast from local meteorologists shows the heaviest snowfall during the Christmas storm with tapering through the 26th and drier, colder conditions expected after the weekend—models and powder forecasts projected the main storm to wind down by the 26th with lighter wraps afterward.

Piste conditions where runs are open are being listed as fresh snow and variable groom—many groomers should be soft and very skiable after the heavy snowfall, but there are also reports of thin spots and floaty “low-tide” base sections in places where snow hasn’t fully covered terrain yet, so be ready for mixed surface conditions and occasional debris or shallow spots on exposed runs. Off-piste looks excellent where the storm has laid consistent coverage—expect deep, heavy Sierra-style snow (often dense “Sierra cement”) in many locations, but also heightened avalanche hazard; the mountain and local ski patrols have been conducting control work and access is being managed accordingly.

Season totals are stacking fast from near-zero to multiple feet in a few days: websites tracking weekly reports had season totals in the tens of inches before the storm and local sources now report large additions pushing totals higher—Mammoth’s historical averages are 350–400" per season, but this year’s current storm is a major contributor toward that benchmark.

Practical local tips: plan for winter driving and possible chain controls on the highway, expect lift and terrain changes throughout the day due to wind and avalanche mitigation, bring a warm, waterproof outer layer and goggles for low visibility, and if you plan to go off-piste carry avy gear and check in with ski patrol/roadside resources before you go. Keep an eye on the resort’s mountain report and webcams for live lift/trail status because the situation is evolving quickly.

If you want I can fetch the resort’s live mountain report and webcams to give you the latest minute-by-minute lift count and exact base/summit depths—want me to pull that now?

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Mammoth Mountain, California Ski ReportBy Inception Point Ai