Lawinenlagebericht

Cariboos

Jan 6 – 7, 2013Avalanche Canada
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Archiviert · abgelaufen 14 years ago

Lawinengefahr

Tue
Wed
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
2 · Mässig

Kernpunkte

Conditions are changing as each snowfall adds to the building storm load. When the storm snow settles into a cohesive slab, it is expected to slide easily on the recent weak surface layers.

Lawinenprobleme

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–4
    Storm slabs are developing on all aspects and elevations. As the storm slab becomes thicker it is expected to consolidate and become more reactive to human triggers. Wind slabs may also continue to develop at higher elevations.

Confidence

Fair - Forecast snowfall amounts are uncertain for the entire period

Weather Forecast

Overnight and Monday: Flurries overnight becoming snow in the morning should bring a total of 15-20 cms. Southwest winds are expected to build to moderate with strong gusts during the morning snow fall. A second pulse of snow should start in the late afternoon or evening.Tuesday: Expect an additional 10-15 cms by late morning combined with strong Westerly winds. Alpine temperatures are expected to dip down to about -12.0.Wednesday: Winds should become light Northerly and another 5-10 cms of snow should fall during the day.

Avalanche Summary

Loose snow avalanches (sluffing) continue to be reported from steep terrain.

Snowpack Summary

There have been variable amounts (15-30 cms) of new snow across the region. In some areas this new snow has been transported into wind slabs. The recent cold and dry weather has caused the surface snow to facet and become weakly bonded. There has also been some surface hoar growth, mostly at and below treeline that has resulted in a weak bond below the new snow. This weak bonding has resulted in dry loose snow sluffing out of steep terrain. Forecast new snow on top of this weak unconsolidated surface should continue to sluff easily. If the new storm snow develops into a consolidated slab above the weak surface layers, expect this slab to be easy to trigger by light additional loads. If the new snow is transported into a wind slab, expect those pockets of wind slab to be very reactive; they may fail naturally or be triggered from adjacent terrain.

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