Bulletin d’avalanche

Nelson Lakes

New Zealand Avalanche Advisory
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Danger d’avalanche

High Alpine · above 1,800 m
3 · Marqué
Alpine · 1,200 m–1,800 m
2 · Modéré
Sub Alpine · below 1,200 m
Sans niveau
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Périmé — ce bulletin a expiré 3 weeks ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Wind slab avalanche danger will persist on east facing aspects at upper elevation due to snow available for transport and strong winds. Caution will be required as a small avalanche may carry you into rocks.

Problèmes avalancheux

  • Wind Slabs

    • Toutes altitudes
    Probabilité
    Likely
    Taille
    1.5

    Strong winds and snow transport will continue. Care will be required on eastern half-aspects at upper elevations as the new snow is redistributed by gale force westerly winds.

  • Cornices

    • Toutes altitudes
    Probabilité
    Unlikely
    Taille
    1

    Cornice development is possible at ridge crest above 1800m. Care will be required as cornices may trigger the accumulated wind-transported snow below.

Recent Avalanche Activity

No observations. Please provide a public observation if out and about above the snow line using the link below.

https://www.avalanche.net.nz/observations

Current Snowpack Conditions

Reasonably consistent snow cover exists above 1800 meters. Below 2000 meters, the snow may overlie a hard rain crust. The snow on the ground before this storm is expected to be reasonably strong, but few field observations have been possible. With 35 to 50 cm of new snow that has been redistributed by high winds, uncertainty about the strength of the current snowpack will increase. Ongoing strong to gale force winds at upper elevation since the last storm continues to promote wind slab danger. Lower density snow has been noted below wind transported snow on east facing aspects. Conservative decision-making will be required.

Mountain Weather

Cloudy with snow showers in the afternoon. Southwest gales rising to severe gale in the afternoon. Freezing level 1000m lower to 400m.

Sliding Danger

North-facing aspects at lower elevation may be hard. Sliding into rock is a potential hazard. Ice axe and crampons will need to be carried.

Forecast Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are uncertain because cornice falls are difficult to forecast.

New Zealand Avalanche Advisory (NZ Mountain Safety Council)

Régions couvertes