Lawinenlagebericht

Olympics

Northwest Avalanche Center
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Lawinengefahr

Sat
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist 5 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Early season coverage may limit slab hazard in some areas, but at higher elevations and near wind-loaded ridgelines, a strong approaching storm will begin to build fresh wind slabs. Steer around steep wind-loaded lee slopes at upper elevations. Remember that shallowly buried objects increase travel hazards and avalanche consequences.

Lawinenprobleme

  • Loose Dry

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

    Increasing winds will blow 6-8" of available low-density snow into shallow slabs in the lee of ridgelines.  Wind-loading will increase rapidly during the afternoon and will build firm and punchy slab layers that you can trigger near ridgelines at upper elevations. Shallow snow coverage may limit slab hazard in some areas, but wind-loaded pockets will exist in isolated areas near treeline. Remember that the consequences of even a shallow, small avalanche can be amplified by early season coverage (rocks, stumps, roots).

Avalanche Discussion

NWAC pro observers traveled by foot from the Hurricane Ridge Parking lot on Thursday. Near treeline, 75% of the terrain had sufficient coverage to produce avalanches (given instability). The snowpack structure featured 5-6" of low-density new snow (minimally impacted by wind) overlying the late November Crust. Sandwiched between the primary layers, the observers found a thin crust above sugary faceted snow. 

Conditions become increasingly stormy Friday afternoon as 2-3" of fresh snow arrives and moderate winds with strong gusts redistribute the snow into drifts and shallow slabs. If you encounter blowing snow or drifting snow, shooting cracks, or significant snowdrifts, you should dial back your terrain selection and seek lower angle slopes. 

In many areas, the greatest hazard may be the early season coverage. It's worth considering your mode of travel before heading out.

With a strong system arriving Friday night, expect a further increase in avalanche danger heading into the weekend.

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