This California Mega-Resort Waited Nearly a Decade for Remote Avalanche Tools
Mammoth Mountain and June Mountain are installing 16 remote avalanche control systems in a $5.7 million project meant to keep patrol out of storm-day hazard zones.
Mammoth Mountain and neighboring June Mountain are bringing online 16 Remote Avalanche Control Systems for winter 2026-27, a $5.7 million California safety project Alterra says was nearly a decade in the making.
The towers and related hardware let ski patrol trigger mitigation from shelter during heavy snow, low visibility, and high winds, instead of putting teams into avalanche terrain when the mountain is most unstable. For Ikon Pass travelers who treat Mammoth as their Eastern Sierra hub, that is less about new acreage and more about how fast closed bowls can reopen after a storm cycle.
Why remote control matters on big Sierra days
Alterra's September capital release put the Mammoth and June package beside a separate $3.2 million remote avalanche spend at Palisades Tahoe. Together, the California Ikon resorts are leaning on Gazex-style exploders, Wyssen towers, and related systems so patrol can work through weather that used to stall hand charges and artillery windows.
Officials describe years of evaluation, testing, regulatory work, and partner collaboration before the systems could be installed. That timeline is the curiosity gap: this is not a summer photo-op. It is the end of a long permitting and engineering path for two mountains that see deep Sierra storms and frequent avalanche closures.
What destination skiers should take from it
You will not ski a new lift because of RACS. You may ski more of the existing map on the day after a dump, when remote mitigation clears terrain that previously waited on safer weather for patrol to travel. Mammoth remains the destination product. June stays the quieter sibling with shared Alterra operations and shared safety investment.
If you are building a California Ikon week, treat avalanche-control capacity as part of the storm-day plan alongside lodging elevation and pass reservations. Primary source: Alterra Mountain Company.
Hybrid snowcats are also expanding at Mammoth this winter, but the RACS spend is the one that changes how patrol works in the dark. Watch for early-season updates on which avalanche paths the new systems cover. That map will matter more than the capital headline when the first atmospheric river stalls over the Sierra.