Lawinenlagebericht

Glacier

Mar 4 – 5, 2026Avalanche Canada
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Archiviert · abgelaufen 7 months ago

Lawinengefahr

Fri
Sat
Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
3 · Erheblich
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Kernpunkte

The January 26th Surface Hoar layer has finally woken up, producing very large avalanches throughout Rogers Pass.

Many slopes have not failed yet. These should be considered "Ready To Fail" and absolutely avoided!

With continued incremental loading these next few days, manage your overhead hazards accordingly.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible - Likely
    Größe
    1.5–3

    ~70 cm of recent snow has been redistributed by extreme S'ly winds. Wind slabs have formed in all exposed terrain and may become more reactive with solar warming. Avalanches in motion may step down to deeper layers resulting in large avalanches.

  • Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1.5–4

    Two persistent weak layers are buried down ~100 and ~130 cm. New snow combined with extreme winds have overloaded these weak layers triggering large, destructive avalanches. Be very suspect of slopes that haven't recently avalanched. These weak layers are still within human triggering depths.

Confidence

Moderate

  • We are uncertain due to how buried persistent weak layers will react with the forecast weather.
  • We are confident that there are deep persistent slabs in the snowpack, but uncertain about how likely they are to trigger.
  • We are uncertain due to the track and intensity of the incoming weather system.

Avalanche Summary

Explosive testing on Fidelity today produced a size 3 avalanche on the Jan 26 surface hoar. It also remote triggered a size 3 slab 50m away, with 2 ridges and a gully between them.

The avalanche cycle this past Fri saw numerous natural and explosive triggered avalanches up to size 4 running into valley bottom. The carnage of downed timber and debris littering the uptrack in Connaught and Asulkan is sobering.

See the following link to a recent Mountain Conditions Report.

Snowpack Summary

Extreme S'ly winds redistributed ~70cm of new snow into thick wind slabs on leeward features across the Alpine. Solar aspects (SE through W) have a surface crust from recent sun.

The Feb 9 surface hoar (SH) is down 90-120 cm and remains reactive in snowpack testing. The Feb 9 SH sits over a crust on solar aspects.

The Jan 26th layer, composed of surface hoar/facets/crust, is buried down 130-160 cm. The largest surface hoar is preserved in sheltered areas below treeline.

Weather Summary

Snow, gusty winds, and freezing levels (FZL) around 1500m will be the story at Rogers Pass the next few days.

Tonight Flurries, 5-10cm. Low -4°C. Wind SW 20-35km/h. FZL 1400m.

Wed Snow, 10-15cm. High -2°C. Ridge winds SW 20-45km/hr. FZL 1800m.

Thurs Flurries, 5-10cm. High -5°C. Ridge winds SW 20-50km/hr. FZL 1400m.

Fri Flurries, 5cm. High -5°C. Ridge winds SW 20-45km/hr. FZL 1400m.

Terrain and Travel Advice

  • Shooting cracks, whumpfs, and recent avalanches are strong indicators of an unstable snowpack.
  • If triggered, wind slabs may step down to deeper layers, causing larger avalanches.

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