Bulletin d’avalanche

Jasper

Mar 5 – 6, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

It's March and the sun is packing a punch. Cornices are large and deserve a lot of attention these days, avoid being under them when ever possible and don't stand on them.

Problèmes avalancheux

  • Wind Slabs

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

    Winds have shifted to a northerly flow. Wind slabs possible on all aspects.

  • Loose Dry

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

    Avoid ice climbs that are exposed to steep rocky terrain.

  • Loose Wet

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

    Caution on the solar slopes in the afternoon if the sun comes out.

Weather Forecast

Saturday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: High -8 C.

Ridge wind north: 10-20 km/h.

Freezing level at valley bottom.

Sunday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: Low -14 C, High -7 C.

Ridge wind west: 10-25 km/h.

Freezing level: 1400 metres.

Snowpack Summary

Feb 28-Mar 2 storm deposited 35cm of snow at Parkers Ridge Area. 10-15cm fell further to the North. Suspect a new sun crust on solar aspects from Friday. A crust down 25-40cm from the surface is decomposing but can still be found below 2500m on south aspects. There is a widespread weak facet layer at the bottom of the snowpack in all areas.

Avalanche Summary

Jasper Visitor Safety preformed avalanche control on Thursday in the Parkers Ridge zone. Explosives control produced a few slab avalanches up to size 2 on east aspects. One natural cornice avalanche Sz 2 was observed on Thur on Churchill this entrained loose dry snow.

Confidence

Régions couvertes