Bollettino valanghe

North Columbia

Dec 7, 2017Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 9 years ago

Pericolo valanghe

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

In sintesi

Seek the shade for the best riding and least sun-baked snow.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Wind slabs may be lurking behind ridges and ribs.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–2
    Loose wet avalanches are likely in steep, rocky, sunny terrain. Warming could also wake up more deeply buried weak layers.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

THURSDAY: Sunny with valley cloud. Light wind. Freezing level near 3400 m with a colder air layer in the valleys.FRIDAY: Sunny with valley cloud. Light wind. Freezing level near 3000 m with a colder air layer in the valleys.SATURDAY: Sunny with valley cloud. Moderate south-west wind. Freezing level near 2600 m with a colder air layer in the valleys.More details can be found on the Mountain Weather Forecast.

Avalanche Summary

On Tuesday, explosive avalanche control in the Monashees produced a few size 1.5 slabs running on the November crust on northwest-facing slopes at treeline. A large size 3 natural avalanche was reported on a steep north-facing alpine face in the Selkirks. The failure layer is unknown, but it was likely an early season crust. Some sluffing from steep sun-exposed slopes was also reported.

Snowpack Summary

Intense warming will melt and weaken upper snowpack layers, particularly on steep sunny slopes. Isolated wind slabs may be found behind ridges and ribs. Warming also has the potential to wake up more deeply buried crust layers which formed during November's rainfall. On the whole these crusts have been showing reasonable bonding in snowpack and slope tests. Below treeline, the snowpack is shallow--look out for early season hazards like open creeks and tree stumps.

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