Boletín de aludes

Northwest Inland

Jan 4, 2019Avalanche Canada
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Archivado · caducó 8 years ago

Peligro de aludes

Sat
Sun
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
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Lo esencial

Weather models are showing variable snowfall amounts for Friday morning. Assess local accumulated amounts and employ a conservative approach with route selection. Expect rapid changes with elevation due to the snow-rain line during the recent storm.

Problemas de aludes

  • Storm Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2.5
    The recent snowfall may not bond well to the underlying snowpack. Expect the deepest deposits in lee terrain features near ridges, as the snow fell with strong southwest winds.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

THURSDAY NIGHT: Mostly cloudy with light snowfall in the south of the region, accumulation 5 to 10 cm, light to moderate southwest winds, alpine temperature -8 C, freezing level below valley bottom.FRIDAY: Mostly cloudy with light snowfall, accumulation trace to 5 cm, light south winds, alpine temperature -7 C, freezing level below valley bottom.SATURDAY: Mostly cloudy with light snowfall, accumulation trace to 5 cm, light to moderate southwest winds, alpine temperature -9 C, freezing level below valley bottom.SUNDAY: Mostly cloudy, light west winds, alpine temperature -9 C, freezing level below valley bottom.

Avalanche Summary

There were reports of large avalanches in the north of the region, corresponding with the storm from Monday to Wednesday. There were no recent reports for the south of the region.We often have a hard time getting reports of avalanche activity from this region, so if you see anything, please post your observations to the Mountain Information Network! (MIN). Thanks!

Snowpack Summary

Expect fresh storms slabs to have formed with around 20 cm of new snow and possibly more for the south of the region on Thursday night into Friday. The snow fell with strong southwest winds, so the deepest and touchiest deposits will be in lee terrain features. These will sit on lingering hard wind slabs from last weekend. Below around treeline elevations, expect rain to have made some of the recent snow soggy, before freezing into a melt-freeze crust.Buried under recent storm snow, you may find a few weak layers in sheltered areas comprising of feathery surface hoar crystals and/or sugary faceted snow. The upper layer was buried around December 31 and is about 20 cm deep. The next layer may have been buried around December 22 and is likely 30-50 cm deep. The lower one was buried in early-December and is now approximately 80-120 cm deep. Deeper in the snowpack, there are several crusts including an early-season crust with weak faceted snow near the bottom of the snowpack.

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