Avalanche forecast

Cariboos

Mar 10 – 11, 2013Avalanche Canada
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Archived · expired 13 years ago

Avalanche danger

Tue
Wed
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    New snow and wind is expected to develop new windslabs that may be easy to trigger where they are sitting on anew layer of surface hoar and/or a sun crust.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–6
    A weak layer of surface hoar buried down about 100-150 cm (February 12th layer) may continue to be triggered by large forces like cornice fall or storm snow avalanches in motion.

Confidence

Fair - Forecast snowfall amounts are uncertain on Monday

Weather Forecast

Overnight and Monday: A weak disturbance is moving Southwards across the Interior Ranges bringing light precipitation and strong Northerly winds. Freezing levels should drop to valley bottoms overnight and then rise to about 1000 metres.Tuesday: A Low pressure system is expected to track inland from the South Coast during the day bringing moderate to heavy precipitation and freezing levels rising up to about 1500 metres. Winds becoming strong Westerly.Wednesday: Another frontal system is expected to move inland from the coast.

Avalanche Summary

Some loose moist snow and cornice releases were reported. There are no new reports of avalanches releasing on the February 12th weak layer.

Snowpack Summary

New wind slabs are expected to develop as the next pulse of precipitation moves in with strong winds. New snow is expected to bury the recently developed surface hoar and sun crusts. The weak layer of surface hoar that was buried around February 12th may be triggered by storm snow avalanches in motion, or by cornice fall and other large triggers. The strong solar radiation may trigger some cornice fall or release moist loose snow in steep terrain that may step down to one of the deeper weak layers.

Regions covered