Lawinenlagebericht

Kootenay Boundary

Avalanche Canada
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Lawinengefahr

Sun
Mon
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

  • Cornices

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

    Cornices are more likely to fall as the temperature rises and the sun comes out.

  • Storm Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1–2.5

    Up to 50 cm of recent snow sits on a buried crust, with weak facets reported above it in some areas. Storm slabs may still be reactive to rider-triggering and could fail naturally during periods of strong sun or warm temperatures.

  • Loose Wet

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

    Wet loose avalanches will occur during calm, sunny periods. Avoid being underneath slopes in the sun.

Confidence

Moderate

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

Avalanche Summary

In neighbouring regions to the north and east on Thursday, numerous skier-triggered wind slabs (size 1-2) were observed in the alpine. The new storm snow was bonding poorly to the crust below.

Strong sun and warming on Saturday will increase the likelihood of both natural and human-triggered avalanches. Be increasingly cautious as the snowpack warms up and weakens.

This region is data sparse. Please consider submitting a MIN to let us know what you're seeing out there.

Snowpack Summary

15 to 50 cm of recent storm snow sits on moist snow around treeline or likely on a crust in the alpine. In some areas east of Nakusp, small, weak facets have been seen on the crust.

The snow also fell with moderate to strong winds, forming deeper deposits in lee terrain features. Below 1500 m, all this precipitation fell as rain, wetting an already wet and melting snowpack.

The remainder of the snowpack is strong.

Weather Summary

Friday Night

Clear skies. 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Saturday

Sunny. 20 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1900 m.

Sunday

Sunny. 20 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2400 m.

Monday

Sunny. 20 km/h southwest ridgetop wind. Treeline temperature 7 °C. Freezing level 3000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Closely monitor how the new snow is bonding to the crust.
  • Even brief periods of direct sun could produce natural avalanches.
  • Travel early on sun-exposed slopes before cornices weaken with daytime warming.

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