Bulletin d’avalanche

Garibaldi

Dec 19 – 20, 2023Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
1 · Faible

Points saillants

Assess conditions as you move through terrain

Dial back terrain choice if you observe cracking and natural avalanches

Their is uncertainty in the potential snowline and how snow will bond

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    Taille
    1–2.5

    At elevations where precipitation falls as snow new storm slabs will form throughout the day. The largest and most reactive slabs will likely be found on north facing slopes where wind loading is a factor.

  • Loose Wet

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

    Wet loose avalanches are possible on steep slopes due to rain and elevated freezing levels.

Confidence

Moderate

Avalanche Summary

We expect that avalanche activity will increase through the day on Tuesday.

Please share any observations or photos on the Mountain Information Network.

Snowpack Summary

New snow will likely form storm slab at treeline and above. Below this elevation new precipitation will likely fall as rain, keeping the surface moist. There is some uncertainty in how this new snow will bond to the surface it is falling on.

The mid pack contains a few crusts that may have surface hoar above them.

The snowpack is still shallow for this time of year with the average depth at treeline around 125 cm.

Weather Summary

Monday Night

Cloudy with 15 to 20 cm of new snow expected at treeline and above, southeast alpine wind 20 to 40 km/h, freezing level around 2100 m.

Tuesday

Cloudy with 10 to 15 cm of new snow expected at treeline and above, southeast alpine wind 20 to 40 km/h, freezing level around 2300 m.

Wednesday

Mostly cloudy with trace amounts of mixed precipitation expected, south alpine wind 10 to 30 km/h, freezing level around 2000 m.

Thursday

A mix of sun and cloud with trace amounts of new snow expected, southwest alpine wind 25 to 50 km/h, freezing level around 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be carefull around freshly wind loaded features.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.

Régions couvertes