Bulletin d’avalanche

Jasper

Mar 19 – 20, 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

Travel is desperate below 1700m due to a breakable crust. Watch out for lingering wind slab in the alpine and exposed tree line features.

Problèmes avalancheux

  • Wind Slabs

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

    Watch out for lingering wind slabs down into exposed treeline features.

Weather Forecast

Sunday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: High -9 °C.

Ridge wind W 20-40 km/h.

Freezing level at valley bottom.

Monday

Cloudy with sunny periods and isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -12 °C, High -6 °C.

Ridge wind W 15 km/h gusting to 40 km/h.

Freezing level: 1500 metres.

Snowpack Summary

There is a 1-5cm breakable temperature crust on all aspects below 1700m. Also a sun crust on solar aspects to at least 2100m. Freezing levels on Saturday were around 2200m. The midpack is mostly solid but there could be a Feb 13 interface down 20-50cm as a suncrust on solar aspects and a facet layer on polar aspects.

Avalanche Summary

No new recent avalanches have been observed around Jasper, but large cornices have been falling off causing large avalanches in Banff National Park

Confidence

Due to the number and quality of field observations

Régions couvertes