Bollettino valanghe

Northwest Inland

Jan 1, 2018Avalanche Canada
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Archiviato · scaduto 9 years ago

Pericolo valanghe

Tue
Wed
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole

In sintesi

Dry conditions with a mild inversion are expected for the week. Pockets of lingering wind slabs may still exist in exposed alpine areas.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1–2
    Lingering pockets of wind slab may exist on a range of aspects in alpine terrain as wind directions have varied over the past week.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

Light precipitation on Monday with mild inversions by mid week.  MONDAY: Cloudy, isolated flurries. Accumulation 5 cm possible. Ridge wind moderate to strong southwest. Temperature -3. Freezing level surface.TUESDAY: Cloudy. Ridge wind moderate south west. Temperature -1. Freezing level surface.WEDNESDAY: Increasing cloud. Ridge wind light west. Temperature -1. Freezing level 400m.

Avalanche Summary

A few small natural wind slabs were reported a week ago in steep south facing terrain west of Smithers. Wind slabs showed some reactivity to human triggers also a week ago, but cold temperatures have likely made them difficult to trigger.

Snowpack Summary

Surface snow has been affected by winds from a variety of directions. The degree of wind effect varies throughout the region, with the most dramatic winds associated with outflow conditions in western parts of the region near coastal inlets. Sheltered areas may still have 10-30 cm of powder from previous storms. A variable weak layer that formed in mid-December can be found roughly 20 cm below the surface. This mid-December layer is comprised of crusts on solar aspects and feathery surface hoar in sheltered locations.The lower snowpack is generally well settled with two prominent crusts. The late-November crust can be found 30-50 cm below the surface and the October crust is near the base of the snowpack.For an update on recent conditions check out the Mountain Information Network (MIN) report here. And please submit your own observations to the MIN!

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