Bulletin d’avalanche

Vancouver Island

Apr 21 – 22, 2023Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Sun
Mon
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré

Points saillants

Forecast rain to mountain tops on Saturday may rapidly destabilize the recent snow and increase the likelihood of triggering recently formed storm slabs.

Back off slopes as the surface becomes moist or wet with rising temperatures.

Problèmes avalancheux

  • Storm Slabs

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

    10-25 cm of recent snow and extreme southerly wind on Thursday formed fresh storm slabs that may be reactive to human triggers, especially in wind affected terrain.

  • Loose Wet

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

    Forecast rain to mountain tops on Saturday may rapidly destabilize the recent snow and trigger a wet loose avalanche cycle.

Confidence

Low

Avalanche Summary

No avalanches were reported on Thursday. However, observations in this region are currently very limited.

Observations are very limited at this time of year, please consider sharing any information or photos you have on the Mountain Information Network to help guide our forecasts.

Snowpack Summary

Forecast rain to mountain tops on Saturday may rapidly destabilize the recent snow and trigger a wet loose avalanche cycle.

10-25 cm of recent snow and extreme southerly wind on Thursday formed fresh storm slabs. The new snow overlies a rain crust that likely extends to mountain tops in many areas.

The middle and lower snowpack are strong and well-bonded.

Weather Summary

Friday Night

Cloudy with flurries; 3-15 cm(rain below 1000 m) / 40 km/h southwest ridgetop wind / Temperature at treeline around 0 C / Freezing level 1100 m

Saturday

Rain; 3-10 mm / 50 km/h south ridgetop wind / Temperature at treeline around 5 C / Freezing level rapidly rising to 2100 m

Sunday

Mostly cloudy with isolated flurries; 0-10 cm / 40 km/h southwest ridgetop wind / Temperature at treeline around 2 C / Freezing level 1300 m

Monday

Mix of sun and cloud / 10 km/h west ridgetop wind / Temperature at treeline around 4 C / Freezing level 1600 m

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Expect slab conditions to change drastically as you move into wind exposed terrain.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
  • Use small low consequence slopes to test the bond of the new snow.

Régions couvertes