Bollettino valanghe

Stevens Pass

Jan 26 – 27, 2019
Vedi sulla mappa
Archiviato · scaduto 8 years ago

Pericolo valanghe

Sun
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

The Bottom Line: Expect the warmest temperatures of the winter, so far. Warming, sun, and uncertainty of the snow layers at upper elevations will maintain heightened conditions. If you are heading to higher slopes, use caution on slopes 35 degrees and steeper.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2
    Persistent Slab avalanches can be dangerous. On the heels of the last storm, there's still a lot of uncertainty about if you can trigger these avalanches at upper elevations. The best approach is to pick conservative terrain, and avoid exposure to large avalanche paths until more information can be gathered.

    A layer of surface hoar, buried on January 17th, should be 2 to 3 feet down from the surface. The main elevations of concern for it the weak layer are above 5500ft. Digging in the snow and using snowpack tests can help you confirm if it exists. Try not to make decisions on single tests or snow profiles.

Snow and Avalanche Discussion

With warming and sun, uncertainty about the snowpack is increasing. Most loose wet avalanches you will see are a few days old. You may encounter soft, wet snow on sunny slopes and low elevations.

About 13” of snow, followed by rain on Tuesday night and Wednesday led to a widespread natural avalanche cycle throughout the Cascades. Many large paths in the area ran including Wellington, Highway Chutes, Lichtenberg Southeast side, Arrowhead Northeast Bowl, The Swath, and likely others. It rained up to around 5,000ft, but at that elevation the crust is reported to be fairly thin.

Regioni coperte