Lawinenlagebericht

Turnagain Pass and Girdwood

Chugach National Forest Avalanche Center
Auf der Karte ansehen

Lawinengefahr

Mon
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig
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Veraltet — dieser Lagebericht ist 6 months ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Stability is improving with quiet weather, but there remains a chance of triggering an avalanche failing 1 to 2' deep within new and windblown snow. Careful snowpack assessment will be key if you are planning to travel in steep terrain today. Areas favored by Friday's storm with a foot or more of new snow, as well as any wind-loaded terrain, will be the most suspect. When in doubt, you can always avoid the problem by sticking to low-angle terrain.

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SPECIAL ANNOUNCEMENTS:

We’re excited to announce the annual Turnagain Pass Avalanche Awareness Day on Saturday, March 14! We will be up in the Turnagain Pass motorized lot from noon until 4 pm, along with AMDS, Anchorage Yamaha and Polaris, Anchorage Nordic Ski Patrol, Alaska Search and Rescue Dogs, and the Alaska Avalanche School. Stop by to demo a snowmachine, run through some avalanche rescue drills, or just grab a free burger or hot dog and chat with CNFAC forecasters about current avalanche conditions.

Lawinenprobleme

  • Storm Slabs

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

    Recent Avalanches: Large natural avalanches failing at the new/old snow interface were observed in the Girdwood Valley yesterday. Similar activity was seen at Turnagain Pass, although the avalanches were smaller than those seen in Girdwood.

    The main avalanche concerns lie within the new and windblown snow from Friday's storm. Although this is likely less reactive than it was yesterday, there are two main issues to key into as you travel today:

    • The old snow surfaces were highly variable before Friday's storm. While this helps to reduce the likelihood of wide-propagating avalanches, it also makes it more challenging to assess. We know there are some slopes with weak, faceted snow buried 1 to 2' deep beneath the new snow, and those areas may remain reactive today. This will be very hard to identify as you travel, and may give misleading feedback. This will be most concerning in areas favored by the storm that received a foot or more of new snow.
    • Moderate northwesterly winds may be building a fresh round of reactive wind slabs, especially at and above treeline. These will be easier to identify by looking for relatively stiff snow sitting on top of softer snow.

    The newer snow is slowly stabilizing, but careful assessment and terrain management will be the name of the game today. Signs like shooting cracks or collapses are clear indicators of unstable snow. You can mitigate some of the uncertainty mentioned above by avoiding consequential terrain with features like rocks, cliffs, trees, or depressions in avalanche runout zones. As always, if you want to avoid these problems entirely, you can simply use low-angle terrain.

    Dry Loose Avalanches will be fast-moving and easy to trigger in steep terrain. These are unlikely to be big enough to bury a person, but they could still be a concern if they were to take you for a ride.

     

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