Boletín de aludes

Arthur's Pass

New Zealand Avalanche Advisory
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Peligro de aludes

High Alpine · above 1,800 m
3 · Notable
Alpine · 1,200 m–1,800 m
2 · Moderado
Sub Alpine · below 1,200 m
1 · Débil
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Desactualizado: este boletín caducó 4 weeks ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

With new snow in the last few days and the first fine day tomorrow, expect the loose wet avalanche hazard to increase during the day. Be cautious of steep sunny slopes and runouts. There has been a lot of new snow in the last few days, which is slowly settling, but another day of caution is advised.

Problemas de aludes

  • Loose Wet

    • Todas las altitudes
    Probabilidad
    Likely
    Tamaño
    1.5

    New snow plus sun equals loose wet avalanche hazard. Be cautious of steep sunny/north facing terrain and runouts.

  • Wind Slabs

    • Todas las altitudes
    Probabilidad
    Possible
    Tamaño
    1.5

    With more than 80cm of new snow at higher elevations and changes in winds and temperatures, expect a few different layers within the new snow. There has been some time since the last heavy precipitation, but another day of caution is advised before getting onto the steeper terrain. Some pockets could be quite deep; expect some areas to be well over 1m deep. Plan conservative lines and to keep out of steeper ground until the new snow settles. Be cautious of runouts in valley bottoms, as avalanches could hit the valley floor in some areas.

Recent Avalanche Activity

Multiple loose, wet size 1-1.5 were observed on all aspects on the 24th that ran during the storm. See public observation.

If you see anything, please report it in the public observations section of the NZAA website.

Current Snowpack Conditions

80mm of rain since Friday has fallen in Arthur's Pass. Initially rain below 1900m, but the freezing level dropped later in the storm with snow to 1100m. Over 80cm of new snow fell above 1900 m, with drifts to over 1m expected; expect some storm shears within the new snow. The lower elevations will have started wet, with new snow expected to have bonded well. All this fell on a generally well-settled snowpack. Limited snow cover below 1700m before the last storm. There have been a couple of storm cycles this season, bringing a base at higher elevation associated with strong winds, leaving a pressed snowpack with no significant layers of concern. At lower elevations (below 2000m) ice crusts exist but bonding to the ice layers has been good.

Mountain Weather

Fine. Winds Light. Freezing level 500 metres, lifting to 1100 metres in the morning.

Sliding Danger

Conditions have changed; new snow fell in the last few days, but with strong winds, so ridges may be stripped back to hard surfaces. Crampons and an ice axe are a good idea for ridge travel.

Forecast Confidence

Moderate

  • We are confident the likelihood of avalanches will increase with the forecast weather.

New Zealand Avalanche Advisory (NZ Mountain Safety Council)

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