Bollettino valanghe

Lizard-Flathead

Mar 24 – 25, 2026Avalanche Canada
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Archiviato · scaduto 6 months ago

Pericolo valanghe

Thu
Fri
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

Freshly formed storm slabs will be most reactive in wind affected terrain.

Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3

    Persistent weak layers may linger in the upper snowpack. Triggering may be possible in areas without a thick/supportive crust above the weak layer, most likely at upper elevations. Cornice falls are most likely to trigger this problem.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2

    Forecast 15 to 25 cm of new snow and strong southwest winds may form storm slabs that will be most reactive in wind affected terrain.

Confidence

Moderate

  • We are uncertain about forecast snowfall amounts.
  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

No new avalanches were reported on Monday.

Last week's rain and warm temperatures triggered a widespread natural slab avalanche cycle up to size 3.

If you are heading into the backcountry, please consider sharing conditions via the MIN.

Snowpack Summary

Forecast 15 to 25 cm of new snow and strong southwest winds may form storm slabs that will be most reactive in wind affected terrain. The new snow sits on a thick crust.

Below this, up to 50 cm of rain soaked snow lies over a crust (1 to 10 cm thick) from early March. Persistent weak layers may linger within the upper 150 cm of the snowpack. These may remain possible to trigger in isolated locations at upper elevations where the crust above the weak layer is thin.

The mid and lower snowpack is well settled and strong in most areas.

Weather Summary

Tuesday Night
Cloudy. 3-10 cm of snow above 1700 m (rain below). 70 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

Wednesday
Mostly cloudy. 0 to 5 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1700 m.

Thursday
Mostly cloudy. 0 to 5 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -7 °C. Freezing level 1300 m.

Friday
Sunny. 30 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level 1700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use conservative route selection. Choose simple, low angle terrain with no overhead hazard.
  • Be especially cautious as you transition into wind-affected terrain.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Cornice failures could trigger large and destructive avalanches.
  • Storm slabs in motion may step down to deeply buried weak layers and result in very large avalanches.

Regioni coperte