Bulletin d’avalanche

Banff Yoho Kootenay

Feb 5 – 6, 2026Avalanche Canada
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Archivé · expiré 8 months ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

The warmer and sunnier it becomes Thursday, the higher the hazard. Our hazard rating is for the highest potential hazard for the day.

The likelihood of triggering an avalanche on the Jan 24 surface hoar layer will increase as the overlying slab becomes thicker or denser.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Strong winds Tuesday and Wednesday have produced wind slabs in isolated locations at ridgetop.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2

    A surface slab over hard surfaces and/or surface hoar is a developing problem that could catch users off guard as it is likely susceptible to human triggering. Avoid unsupported and steep open slopes where this problem may exist.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    Clear skies and warm air will elevate freezing to ridgetop and higher on southerly aspects. Wet loose avalanches are possible the warmer and more sun we get, particularly proximate to southerly rock outcrops.

Confidence

Low

  • We are uncertain due to the timing or intensity of warming will affect the snowpack.

Avalanche Summary

Several loose wet up to size 1 on steep south aspects. Debris from a recent size 2.5 (last 48 hours) was observed out of the north side of Mt. Stephen Tues. A size 2 out of the SE side of Brewster rock near Sunshine was also observed Tuesday.

Over the weekend multiple avalanche involvements were reported, up to size 2, all running 10-25 cm deep on the surface hoar/crust layer.

Your MIN reports are very useful when building our forecasts. Thank you all for past and future submissions

Snowpack Summary

Dry and moist snow depending on elevation and aspect (10-30cm) overlies the Jan 24th surface hoar, crust and/or previously wind affected snow. This surface snow is consolidating into a slab with warm temperatures and wind.

Widespread previous wind affect in alpine and exposed areas at treeline.

Weather Summary

Thursday: Sunny with cloudy periods. Alpine temperature: High 2 °C. Mostly light ridge wind occasionally gusting to 30 km/h. Freezing level: 2900 meters.

Friday: Sunny. Alpine temperature: Low -1 °C, High 1 °C. Mostly light ridge wind occasionally gusting to 45 km/h. Freezing level: 2600 meters.

Saturday: A mix of sun and cloud. Alpine temperature: Low -3 °C, High -1 °C. Freezing level: 2200 meters.

Terrain and Travel Advice

  • Use extra caution for areas that are experiencing rapidly warming temperatures for the first time.
  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.
  • Wind slabs are isolated, but may remain reactive.

Régions couvertes