Bollettino valanghe

Lizard-Flathead

Jan 5, 2017Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 10 years ago

Pericolo valanghe

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

In sintesi

Be cautious near shallow rocky areas, where a small slab could trigger buried weak layers resulting in large avalanches.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    1–2
    Variable northerly winds may redistribute the new snow into reactive wind slabs in exposed lee terrain. In shallow snowpack areas, these slabs could pull out to deeper layers below, increasing the size of an avalanche.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3
    Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

The arctic outbreak continues with cold temperatures and no snow until Sunday at the earliest.THURSDAY: A mix of sun and cloud. Wind light southwest 15-25 Km/h. Temperatures between -16and -28 Celcius. No precipitation.FRIDAY: Sunny with cloudy periods. Wind becoming southwesterly 15-25 Km/h. Temperatures between -16 and -28 Celcius. No precipitation.SATURDAY: Increasing clouds late in the day with a chance of flurries. Winds light southerly 5-10 Km/h. Temperatures between -12 and -24 Celcius.

Avalanche Summary

No new observations.

Snowpack Summary

The snow from last week is showing signs of consolidating into soft slabs and sits on a variety of wind-affected surfaces at treeline and in the alpine. That said, the main concern is windslabs (and some cornices) forming in the alpine due to the recent arctic outbreak winds. Deeper in the snowpack the mid-December persistent layer (facet interface) has been more prominent and reactive in the Corbin zone than closer to Fernie: Watch out for thinner snow packs and areas of crossloading in isolated areas (think shallow rocky areas) where an avalanche could step down to trigger deeper layers.

Regioni coperte