Avalanche forecast

Central Sierra Nevada

Sierra Avalanche Center
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Avalanche danger

Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
Out of date — this forecast expired last year. You’re viewing past conditions, not the current bulletin.

Highlights

Little to no overnight refreeze, warm weather, and a chance of rain today mean wet loose avalanches will be possible on steep slopes. If the snow feels wet or mushy or it's raining on the snow, it's time to move away from slopes steep enough to avalanche. 

The last forecast for this season will post on Saturday, April 19th. 

Avalanche problems

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2

    Cloud cover, some rain, and above-freezing temperatures last night should have prevented much of yesterday's wet snow from refreezing. If a refreeze did occur in some places, it likely remained thin, superficial, and won't stay frozen for very long this morning. More warm weather and potential rain today will keep wet loose avalanches possible on all aspects. In some areas, enough melting may occur to expose the deeper wet snow below the recent refreeze crusts. Long, steep slopes can produce larger wet loose avalanches, but smaller wet loose avalanches can still have consequences in areas with terrain traps like cliffs or creeks. Rain could also weaken some of the cornices that linger along many ridgelines.

    Due to the poor overnight refreeze, many slopes may not have the period of supportability that typically happens on spring mornings. Expect wet and mushy snow on most slopes today. Sinking into boot-top deep wet snow, roller balls, and pinwheels can indicate larger, wet loose avalanches can occur. If the snow feels wet and unsupportable or it's raining, it's time to move away from avalanche terrain onto less steep slopes.

    (4/15/2025)

    Debris from a recent wet loose avalanche in Cathedral Bowl on Mt. Tallac. It looked like enough debris to injure/partially bury a person. 

Avalanche Discussion

Thank you to everyone who contributed to the avalanche center this season through observations, volunteer time, public support, and/or financial contributions.

Regions covered