Bulletin d’avalanche

Waterton Lakes

Jan 16 – 19, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Refrozen surfaces are making for supportive, fast skiing until valley bottom where it becomes breakable crust. Sharpen your edges.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2.5

    Strong to extreme SW winds and warm temps have formed hard windslabs in alpine lees.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    2.5–4

    One significant size 4 event on this layer on sunday the 9th of Jan. No obs on this layer since then.

Weather Forecast

Sunday: Cloudy with isolated flurries, alpine high -6. Winds moderate SW, FL valley bottom.

Monday: Cloudy with isolated flurries, alpine high -4. Winds strong SW, FL valley bottom.

Tuesday: Cloudy with sunny periods and isolated flurries, alpine high -7 low -14. Light E winds. FL valley bottom.

Snowpack Summary

Freezing levels on saturday rose to 1900m. A 15 cm rain crust exist up to 2000m. A 1 cm temp crust exists to 2400m on solar aspects. Alpine surfaces range from hard windslab in lees and to bare ground. Well settled midpack. Facets above Dec 4 crust down 150-200 cm. A 20-60 cm thick Nov MFcr complex completes snowpack to ground.

Avalanche Summary

Evidence of previous cycle (Jan 8-12), with avalanches from size 2 - 4 can still be seen in most avalanche paths. No avalanches observed in the last two days within park as a result cooling temps. Thanks to everyone posting on the Mountain Information Network, keep up the great work, we really do read them.

Confidence

Due to the number of field observations

Régions couvertes