Lawinenlagebericht

North Rockies

Mar 20 – 21, 2024Avalanche Canada
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Archiviert · abgelaufen 3 years ago

Lawinengefahr

Fri
Sat
Hochgebirge
2 · Mässig
Waldgrenze
1 · Gering
Unterhalb
1 · Gering

Kernpunkte

Where a thick surface crust is present, large avalanches are unlikely.

If unsure, choose mellow terrain and avoid being under steep slopes.

Lawinenprobleme

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Unlikely - Possible
    Größe
    2–3.5

    A weak layer of facets rests above a hard melt freeze crust that formed in early February. Where the surface has a new, thick crust, human triggering of this weak layer is unlikely.

Confidence

Moderate

Avalanche Summary

No new avalanches have been reported. With a thick surface crust forming from below-freezing temperatures, we expect persistent slab avalanches to become unlikely to trigger.

A widespread natural avalanche cycle, with persistent slab avalanches up to size 2.5, continued until Saturday.

Snowpack Summary

About 5 cm of new snow now overlies a strong melt-freeze crust. This crust is expected to decrease the likelihood of triggering avalanches.

A widespread crust, formed in early February, is buried about 50 to 110 cm deep. This crust has a weak layer of facets above it in many areas.

Weather Summary

Wednesday Night

Mostly clear. 15 to 30 km/h northeast ridgetop winds. Treeline temperatures drop to -12 °C. Freezing level 1000 m dropping to surface.

Thursday

Mostly cloudy. 30 km/h northeast ridgetop winds. Treeline temperatures -8 °C.

Friday

Few clouds. 20 to 30 km/h northeast ridgetop winds. Treeline temperatures -10 °C.

Saturday

Sunny. 20 to 30 km/h northeast ridgetop winds. Treeline temperatures -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
  • Keep in mind that human triggering potential persists as natural avalanching tapers off.

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