Avalanche forecast

North Columbia

Apr 7 – 8, 2019Avalanche Canada
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Archived · expired 7 years ago

Avalanche danger

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

Highlights

Wind slabs are likely to be encountered at upper elevations and may be reactive to human triggering, especially in lee features.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Up to 30 cm of recent storm snow sits on a crust in most locations, and on dry snow on north facing alpine terrain. Strong southwest winds will have formed wind slabs at upper elevations.

Confidence

Moderate -

Weather Forecast

SUNDAY NIGHT - Cloudy with flurries, 5-10 cm / southwest winds, 10-25 km/h / alpine low temperature near -6MONDAY - Cloudy with flurries, 5 cm / southeast winds, 10-25 km/h / alpine high temperature near -3 / freezing level 1600 mTUESDAY - A mix of sun and cloud with scattered flurries, 5 cm / northwest winds, 10-25 km/h / alpine high temperature near -3 / freezing level 1700 mWEDNESDAY - Cloudy with sunny periods and isolated flurries / west winds, 10-15 km/h / alpine high temperature near -3 / freezing level 1700 m

Avalanche Summary

On Saturday, there were a few reports of natural and human triggered storm slab and wind slab avalanches up to size 1.5 at treeline and alpine elevations. There were also reports of human triggered loose wet avalanches below treeline.On Friday, there were reports of a few natural and human triggered storm and wind slab avalanches up to size 2. These were mainly on north to east aspects in the alpine.On Thursday, there were several reports of natural and human triggered storm slab avalanches up to size 1.5, as well as a few natural loose wet avalanches up to size 1.5.

Snowpack Summary

10-30 cm of recent storm snow sits on a melt-freeze crust on all aspects except for north slopes above 2000 m, where it sits on dry snow and surface hoar (feathery crystals) in some areas. Recent snowfall amounts taper quickly below treeline.North facing slopes above 2000 m may also have a layer of sugary faceted snow buried 50 to 70 cm.Snow is disappearing rapidly at lower elevations.

Regions covered