Bollettino valanghe

Stevens Pass

Jan 21 – 22, 2020Northwest Avalanche Center
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Archiviato · scaduto 7 years ago

Pericolo valanghe

Thu
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

The avalanche danger will increase throughout the day. By Wednesday afternoon, you may be able to trigger large avalanches in the new snow and fresh wind drifts at upper elevations. Check how well the new snow is bonded to old surfaces, and use caution on slopes steeper than 35 degrees if you find recent snow that slides easily.

Problemi valanghivi

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1

    Storm slabs could be about 1 foot deep by the end of the day Wednesday. You may be able to trigger avalanches big enough to injure or kill you near and above treeline. Expect drifts to form at upper elevations with gusty southwest wind Tuesday night. Below treeline, avalanches will be smaller. The likelihood that you'll be able to trigger these avalanches will be determined by the bond between new and old snow. Snow will fall on a variety of old snow surfaces, including moist snow and a recent crust buried around MLK weekend. Dig below the new snow to check for a possible poor bond.

    Use small test slopes and quick snowpack tests to see if the snow slides easily on the old surface. Watch for fresh avalanches and cracks shooting through the snow. If you see these red flag warning signs, use caution on steep roll-overs and slopes steeper than 35 degrees. Avoid terrain traps where even a small avalanche could have serious consequences.

Discussion

Incoming weather will be the main factor affecting Wednesday's avalanche danger. Over the next 48 hours, you can expect dynamic storms with gusty southwest winds, waves of moderate to heavy precipitation, and swings in temperature.

Snowpack Discussion

New Regional Synopsis coming soon. We update the Regional Synopsis every Thursday at 6 pm.

Regioni coperte