Avalanche forecast

Eastside Region

Eastern Sierra Avalanche Center
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Avalanche danger

Thu
Alpine
1 · Low
Treeline
1 · Low
Below
2 · Moderate
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Highlights

Be on the lookout for areas of unstable snow in the form of loose wet instabilities on solar aspects today. Avalanche hazard is expected to rise to MODERATE at lower elevations while LOW avalanche danger persists near and above treeline. Be particularly cautious on long steep solar slopes, at lower elevations, and in areas near rock outcroppings, cliff bands, and tight couloirs where the effects of warming are amplified. Identify features of concern today and be on the lookout for areas of unstable snow.

Avalanche problems

  • Loose Wet

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

    A strong refreeze last night may keep surface snow from softening to concerning levels early in the day. However, you can expect the transition to occur quickly once the sun hits the snow.  Light winds, full sun, and warmer than average temperatures will work together to raise the avalanche hazard throughout the day. Do your own localized assessments and be ready to retreat if surface melt becomes concerning.

    Expect more easterly terrain to warm first followed by due south aspects and finally westerly aspects as the sun moves through the sky. Be particularly cautious at lower elevations and in areas near rock outcroppings, cliff bands, and tight southerly facing couloirs where the effects of warming are amplified. Wet, sticky snow surface, rollerballs and pinwheels, and increasing boot penetration are all signs of surface warming and may foreshadow larger point release avalanches.

Avalanche Discussion

As spring takes hold here on the eastside, it’s important that backcountry enthusiasts shift their approach appropriately. Remember that wet instabilities typically become more concerning in the afternoon. An early start is always beneficial as the weather warms and the sun intensifies. The transition from hard and frozen to wet and unstable can happen very quickly. Monitor surface warming as you ascend the slope and be ready to turn around if things become concerning. In addition, tools like boot and/or ski crampons and an ice ax may be crucial depending on where you choose to travel today.

Recent Observations

-3/30- Lee vining area- Snow conditions in Kidney chute

-3/29- June Area- Snow and weather observation for the June mountain backcountry

-3/29- Mammoth Area- Solar warming despite strong winds in the Lakes Basin

 

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