Lawinenlagebericht

Yukon

Apr 23 – 24, 2023Avalanche Canada
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Archiviert · abgelaufen 3 years ago

Lawinengefahr

Tue
Wed
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
Keine Stufe

Kernpunkte

Forecast snow and southerly wind may form fresh wind slabs on lee features.

Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Lawinenprobleme

  • Wind Slabs

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

    Forecast snow and southerly wind may form fresh wind slabs on lee features.

  • Cornices

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

    Cornices are very large and loom over slopes below like gargoyles. Cornice falls may trigger large avalanches on the slopes below.

Confidence

Low

Avalanche Summary

No avalanches were reported on Saturday. However, observations in this region are currently very limited.

Observations are limited at this time of year, please consider sharing any information or photos you have on the Mountain Information Network to help guide our forecasts.

Snowpack Summary

Forecast snow and southerly wind may form fresh wind slabs on lee features.

Cornices are very large and loom over slopes below like gargoyles. Cornice falls may trigger large avalanches on the slopes below.

A robust crust exists on all aspects up to approximately 1400 m and to ridgetop on sunny aspects.

A weak layer of surface hoar/crust/facets buried in early January is now around 100 cm down in most areas. A significant warming event or a large trigger (like a falling cornice) are the most likely things to activate this layer.

Weather Summary

Sunday Night

Mostly cloudy with flurries; 5-15 cm / 30 km/h southeast ridgetop wind / Temperature at treeline around -3 C / Freezing level 700 m

Monday

Mix of sun and cloud with flurries; 5-10 cm / 35 km/h south ridgetop wind / Temperature at treeline around 0 C / Freezing level 1000 m

Tuesday

Mix of sun and cloud / 20 km/h southwest ridgetop wind / Temperature at treeline around -2 C / Freezing level 800 m

Wednesday

Mostly cloudy with isolated flurries; 3-5 cm / 30 km/h south ridgetop wind / Temperature at treeline around 1 C / Freezing level 1200 m

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Cornice failure may trigger large avalanches.

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