Bulletin d’avalanche

Jasper

Mar 14 – 15, 2018Parks Canada
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Archivé · expiré 9 years ago

Danger d’avalanche

Fri
Sat
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Incoming snow should improve the skiing and is not expected to increase the hazard level until Friday. Exercise extra caution if forecast snowfall amounts are exceeded.

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1.5–2.5
    Polar aspects still have cold, faceted snow and did not receive either solar triggers or significant snowpack settlement this past week. Steep, unsupported slopes should be treated with due respect.

Weather Forecast

Thursday will bring cloud cover and more seasonable temperatures with light flurries of 5-10cm and moderate to strong gusting northerly winds as the trough replaces our high pressure sunshine. Late Saturday is forecast to deliver an additional 15-20cm of snow with continued seasonal temperatures and light winds.

Snowpack Summary

Cooler temperatures and cloud cover will allow continued sintering and settlement of the upper snowpack. Few persistent weaknesses are active in the snowpack. Forecast snowfall with moderate winds should create new windslabs on lee features.

Avalanche Summary

Cooler temps and cloud cover will shut down the current solar-triggered avalanche cycle and new avalanches will require new snow or very large triggers. This past week, avalanches initiating near and below treeline were primarily loose/wet to sz 2.5, but some alpine slopes had also released as slabs to midpack.

Confidence

Forecast snowfall amounts are uncertain

Régions couvertes