Lawinenlagebericht

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Avalanche Canada
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Lawinengefahr

Mon
Tue
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
2 · Mässig
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Veraltet — dieser Lagebericht ist 4 months ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Strong sun and warming will increase the likelihood of both natural and human-triggered avalanches.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2

    Where powder snow prevails, check the bond of the new snow to old surfaces, especially around ridgelines or steep entrances. Warm temperatures may also increase the cohesion and reactivity of lingering slabs.

  • Cornices

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1.5–2.5

    Cornices are more likely to fall as the temperature rises. Avoid being under cornices or any overhead snow or rocks warming under direct sun.

  • Loose Wet

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely - Very Likely
    Größe
    1–2

    The likelihood of wet avalanches will increase under direct sun and freezing levels rising above 2300 m. The snowpack can rapidly destabilize under intense warming, and quickly produce distructive avalanches.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are uncertain about how the timing or intensity of solar radiation will affect the snowpack.

Avalanche Summary

On Friday, explosives triggered a size 2 storm slab and a few other storm slab naturals were also observed, most on north to northeast aspects around 2500 m. Riders were also able to initiate loose dry sluffing in steep terrain.

On Wednesday and Thursday, storm slabs up to size 2 were triggered by riders, explosives, or failed naturally; slabs were 30 to 50 cm thick.

Please consider submitting a MIN to let us know what you're seeing out there.

Snowpack Summary

Sun and rising freezing levels will turn snow moist during the day, warm temperatures overnight will limit crust developement.

At higher elevations, 20 to 60 cm of recent snow sits on moist snow below treeline or a hard melt-freeze crust in the alpine. Some areas may have facets on this crust; field data is limited, so investigate in your area.

A thick crust from mid-March is 30-80 cm deep, which extends up to about 2400 m. Near Invermere, a weak layer of facets may be found above this crust.

Facets are found near the bottom of the snowpack in shallow alpine snowpack areas. The lower snowpack is strong in deep snowpack areas.

Check out this Conditions Update for tips on managing the current spring conditions.

Weather Summary

Saturday Night

Clear skies. 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 2000 m.

Sunday

Sunny. 30 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 2300 m.

Monday

Sunny. 30 km/h west ridgetop wind. Treeline temperature 4 °C. Freezing level 2800 m.

Tuesday

Mostly sunny. 30 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 3000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Investigate the bond of the recent snow before committing to your line.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Even brief periods of direct sun could produce natural avalanches.

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