Lawinenlagebericht

Eastside Region

Eastern Sierra Avalanche Center
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Lawinengefahr

Mon
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig
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Kernpunkte

Heavy snow and strong winds will create hazardous avalanche conditions today. Wind slabs will form near ridges and favored terrain features, and storm snow instabilities may form in more protected terrain. These avalanches could be sensitive to triggers, and large enough to bury a person. Evaluate terrain and tour plans carefully, and seek out lower-angle slopes and sheltered terrain to reduce your exposure.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2.5

    Strong to extreme southwest winds will blow ample new snow around and create reactive wind slabs today. Expect to find this problem on the downwind side of ridges, on rollovers, and in gullies and couloir features. Wind slabs will be largest near the Crest, and in areas that received the most new snow: from Mammoth and north. These avalanches could be large enough to bury a person. Natural avalanches are a sure sign that you've already found the problem. Blowing snow, cornices, deep drifts, and cracking from your skis are all warning signs. Seek out terrain sheltered from the wind, and slope angles that are not steep enough to slide to avoid exposure to avalanches today.

    (4/11/2026)

    Skier triggered wind slab N aspect 11000 ft

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2

    Up to 18" of new snow may create storm slab avalanches on slopes sheltered from the wind. Storm slabs can be sensitive and surprising. Snowfall intensities have been high overnight, and may continue on and off today. Loose dry avalanches will also be possible in the same terrain and under similar conditions. You'll be most likely to encounter these problems on slopes that already have snow on the ground, and have significant new accumulations on top. Look for shooting cracks from your skis in wind-protected areas as a sign that a storm slab problem may be present. Seek lower angle, protected terrain, and be aware of convexities and terrain traps where debris can pile up. 

    Photo: Greg Cunningham

Avalanche Discussion

An atypical April storm is currently bringing heavy snow, strong winds, and cold temperatures to the region. At the time of this writing, up to 18" of snow has been measured north of Mammoth. Less snow has fallen in the southern portion of the forecast area thus far, although you can expect accumulations this morning as the storm moves south.

Avalanche hazard has increased quickly, and will continue as long as the snow keeps falling and the wind keeps blowing. The new snow has fallen on a hard, frozen crust, which may make slides more sensitive and capable of running faster and longer distances. Between the elevated avalanche hazard, bad visibility, and strong winds, today will be a good day to seek out lower-angle, sheltered terrain.

Coverage is significantly less than April norms. While this new storm will help, anticipate freshly buried obstacles, particularly at lower elevations and solar slopes. 

ESAC plans to continue daily forecasts through this period of elevated hazard and changing conditions. Stay safe out there, and please continue to share what you're finding.

 

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