Lawinenlagebericht

East Slopes North

Northwest Avalanche Center
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Lawinengefahr

Thu
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist 4 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

You may be able to trigger small avalanches in recent snow on very steep slopes at upper elevations. Look for loose snow that slides easily on test slopes. Roller balls or moist snow surfaces are signs that you could trigger avalanches on steep, sunny slopes.

Lawinenprobleme

  • Loose Dry

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

    You may find enough uncohesive snow that slides easily on steep slopes near and above treeline, especially where it rests on a slick crust. Use small, test slopes to check how easily the snow slides before committing to bigger terrain. These avalanches could be consequential if they push you into terrain traps like cliffs or rocks. 

    Storm totals since the night of the 12th are 4-8" with more snow near and west of Washington Pass and minimal snow below treeline and east of Mazama. The snow fell on a crust formed by sun and warm temperatures followed by rain to almost 7,000ft. While small and unlikely, there's a chance that you could trigger wind slab avalanches above treeline east of Cutthroat creek, where some wind effect has been reported.

    (2/27/2022) An example of a dry loose avalanche from last season. Photo: Josh Hirshberg

Avalanche Discussion

Between February 3 and 8th, almost 2 feet of snow accumulated near Washington Pass. Observers reported a number of large (up to size D3) avalanches in the zone during this time. Crowns were mostly in north through east-facing terrain, below cliff bands or in other wind-loaded terrain. One human-triggered slide near the Lyall Glacier stepped down to a recent interface and broke into a large avalanche on an east aspect at 6,400ft.  Observers near Harts Pass reported a couple of wide avalanches. One was about 2 ft deep and ran on older, faceted snow in the middle of the snowpack where it was relatively shallow (7ft) and weak.

Abgedeckte Regionen