Bulletin d’avalanche

Mt Hutt

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
1 · Faible
Sub Alpine · below 1,200 m
Sans niveau
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Périmé — ce bulletin a expiré last month. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

The last day of fine weather before increasing NW winds will begin to impact backcountry travel.

Problèmes avalancheux

  • Wind Slabs

    • Toutes altitudes
    Probabilité
    Possible
    Taille
    1

    Wind Slabs will still be possible to trigger. Increasing NW wind will redistribute snow onto the SE 1/2. Look for blowing snow as a key sign hazard is increasing.

  • Loose Wet

    • Toutes altitudes
    Probabilité
    Possible
    Taille
    1

    Loose Wet avalanches will be possible on Wednesday afternoon. Be wary of increasing freezing levels and avoid solar and rocky terrain when possible.

Recent Avalanche Activity

Mt Hutt Patrol ski cut and explosive triggered numerous Size 1.5 Wind Slabs on Saturday afternoon and Sunday morning. These were most reactive across any terrain with an Easterly component and in steep, unsupported terrain above 1500m.

Roller balling was observed across Westerly aspects on Tuesday afternoon.

Current Snowpack Conditions

Increasing NW winds will redistribute snow onto the SE 1/2. Our problematic rain crust remains at the surface in very exposed places. There is an even 20cm across most lower-angle terrain, which has bonded well to the old surface. Underneath the rain crust, there is no significant layering of note, with the only storm of this year well consolidated through to ground.

Mountain Weather

Fine, increasing NW winds into the afternoon and some high cloud may build. FAFL 2400m.

Sliding Danger

Sliding hazard is very aspect-dependent. Exposed terrain still has the rain crust on the surface. Assess the surface before ending up on slope, a set of crampons and an axe may come in handy.

Forecast Confidence

Moderate

  • We are confident the likelihood of avalanches will increase with the forecast weather.
  • We are uncertain whether the wind will be enough to form new wind slabs.

New Zealand Avalanche Advisory (NZ Mountain Safety Council)

Régions couvertes