Mammoth Basin Avalanche Information

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Mammoth Basin Avalanche Advisory

Friday, January 19, 2018 - 6:48am

Avalanche danger today will be CONSIDERABLE near and above treeline. Newly formed wind slabs could produce many small and even some large avalanches on leeward slopes. In isolated areas near treeline, wind slab avalanches could activate the remains of our persistent slab problem and potentially create avalanches that are quite large. Natural avalanches are possible; human triggered avalanches are likely.

Below ~9,000’, even with small amounts of new snow, coverage is thin and avalanches are unlikely.

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Recent Mammoth Observations

Location Date
Hollywood Bowl - Snow and tests Wednesday, January 17, 2018 - 3:45pm
Mammoth Lakes Basin - TJ Bowl- Snowpack and test results Tuesday, January 16, 2018 - 3:15pm
Avalanche Course in the Mammoth Area, Persistent Slabs Problem Monday, January 15, 2018 - 1:00pm
Red Cone bowl ECT Sunday, January 14, 2018 - 1:15pm
Whumpfing Near Duck Pass Saturday, January 13, 2018 - 6:45pm
TJ Bowl and Hammil Bowl - Wind effects, windslab tests Friday, January 12, 2018 - 12:30pm
Snowpit along San Joaquin Ridge Thursday, January 11, 2018 - 12:30pm