Lawinenlagebericht

Kootenay Boundary

Avalanche Canada
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Lawinengefahr

Sat
Sun
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist 4 months ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

A weak layer of facets has been seen on the crust and may cause slabs to be slow to heal.

Investigate in your area, as information is limited.

Lawinenprobleme

  • Cornices

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

    Cornices are more likely to fall as the temperature rises.

  • Storm Slabs

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

    New snow may sit on a buried crust; in some areas, there are weak, sugary facets on the crust as well. Assess the bond with the buried crust as you travel.

  • Loose Wet

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

    Wet loose avalanches are likely to 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 quickly the snowpack will recover and gain strength.

Avalanche Summary

On Wednesday, east of Nakusp, there were a few large (size 2) storm slabs remotely triggered by a snowcat. Also west of Creston, ski cuts produced small storm slabs failing 25 cm deep.

Looking forward, riders could trigger storm slabs at higher elevations, particularly if they don't bond well to underlying crust.

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

Snowpack Summary

Anywhere from 15 to 50 cm of snow has fallen on Tuesday and Wednesday. This snow either 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

Thursday Night
Mostly clear skies. Up to 5 cm of snow. 30 km/h northwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1000 m.

Friday
Mix of sun and clouds. 1 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1800 m.

Saturday
Sunny. 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 2300 m.

Sunday
Sunny. 30 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 3000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Carefully evaluate steep lines for wind slabs.
  • Make observations and continually assess conditions as you travel.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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