Bulletin d’avalanche

Wanaka

New Zealand Avalanche Advisory
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Danger d’avalanche

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

Points saillants

Some fresh snow and strong Northerly winds over the past 24 hours.

Be on the lookout for pockets of Wind Slab (stiff wind transported snow) and stay clear of them.

Problèmes avalancheux

  • Wind Slabs

    • Toutes altitudes
    Probabilité
    Possible
    Taille
    1.5

    Northerly winds may have transported snow and created pockets of Wind Slab. These slabs are most likely to have formed on South facing slopes above about 1700m. Avoid ridge line entry points and other steep unsupported ground if you encounter stiff, wind driven snow.

  • Loose Wet

    • Toutes altitudes
    Probabilité
    Possible
    Taille
    1.5

    The likelihood of Loose Wet avalanches will increase as the day warms up. These slides are most likely to occur on solar (North facing) aspects. If the surface is heating rapidly and losing cohesion it is time to move to a cooler aspect.

Recent Avalanche Activity

Observations have been hamper over the past 24 hours by long periods of poor visibility. A cycle of Loose Wet avalanches has occurred across the region in recent days.

If you see evidence of avalanches in the back country please enter a Public Observation.

Current Snowpack Conditions

Some fresh snow over the past 24 hours (15 - 25cm) in the West. Limited new snow further East. A snowfall of 20 - 30cm 8th/9th August. The underlying pack is mostly stable. Having said that, facets and depth hoar (weak, sugary forms) have been found in places. These pockets of questionable strength appear to be reasonably isolated and are most likely to exist on slopes facing East to South. You would be wise to do some investigation before committing to steep, shady terrain.

Mountain Weather

Thursday - a few showers clearing in the afternoon. Snow down to 1800m AM. North West/Northerly winds easing AM. Light Westerly winds PM. Freezing level - 2000m falling to 1700m during the day.

Sliding Danger

Some fresh snow over the past few days will have reduced the sliding danger. However, keep in mind that the underlying pack remains shallow especially, at lower elevations. Rocks and icy areas may be lurking below a thin cover of fresh snow.

Forecast Confidence

Moderate

  • The snowpack structure is well understood.
  • We are uncertain due to variable freezing levels.

New Zealand Avalanche Advisory (NZ Mountain Safety Council)

Régions couvertes