Avalanche forecast

Lizard-Flathead

Apr 19 – 20, 2018Avalanche Canada
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Archived · expired 8 years ago

Avalanche danger

Sat
Sun
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Sunshine and high freezing levels will increase the likelihood of loose wet avalanches and cornice failures. Minimize exposure to sun exposed slopes when the solar radiation is strong.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–2
    Lingering storm slabs may still be reactive to human triggers in isolated locations on steep, rocky, north facing terrain.

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2.5
    Sunshine and warming temperatures will increase the likelihood of cornice fall.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2
    When the sun comes out it will quickly weaken the new snow and cause loose wet avalanches on steep solar slopes.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

FRIDAY: Sunny. Light west wind. Alpine temperature +6. Freezing level 2500 m.SATURDAY: Cloudy. Strong southwest wind. Alpine temperature +2. Freezing level 1800 m.SUNDAY: Mostly sunny. Light west wind. Alpine temperature +3. Freezing level 2000 m.

Avalanche Summary

No new avalanches were reported in this region. Avalanche reports have been limited due to very few information sources this time of year. If you have been out, please post your observations on the Mountain Information Network (MIN).

Snowpack Summary

Cornices are large and looming. Lingering wind slabs may still be reactive in isolated steep, north facing terrain. This storm snow overlies numerous crusts in the upper 100 cm of the snowpack. The mid-pack is generally well settled and strong.A layer of sugary facets around a crust can be found near the bottom of the snowpack which has been dormant for some time. Large triggers, such as a falling cornice, or a major warm-up to the snowpack could trigger this layer.

Regions covered