Avalanche forecast

Wanaka

New Zealand Avalanche Advisory
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Avalanche danger

High Alpine · above 1,800 m
1 · Low
Alpine · 1,200 m–1,800 m
1 · Low
Sub Alpine · below 1,200 m
1 · Low
Out of date — this forecast expired 6 days ago. You’re viewing past conditions, not the current bulletin.

Highlights

Take advantage of the last day of fine weather before a North West storm rolls in.

Rising North West winds may begin to transport snow.

Identify any pockets of stiff Wind Slab and avoid them.

Avalanche problems

  • Wind Slabs

    • All elevations
    Likelihood
    Unlikely
    Size
    1.5

    Rising North West winds may begin to shift loose surface snow and create pockets of Wind Slab. Watch for blowing snow. Avoid any areas where it is accumulating as stiff slab particularly, if the terrain is steep and complex.

  • Loose Wet

    • All elevations
    Likelihood
    Unlikely
    Size
    1.5

    The likelihood of Loose Wet avalanches will increase as the day warms up. This activity is most likely to occur on solar (North facing) slopes. If the surface is warming rapidly and losing cohesion it is time to move to a cooler aspect. Be wary of confined areas (gullies etc) and slopes exposed to terrain traps.

Recent Avalanche Activity

Some small (size 1) wet slides have been reported over the past couple of days.

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

Current Snowpack Conditions

Expect to encounter variable surface conditions at present (pockets of cold dry snow, hard packed snow and crusts). A small quantity of fresh snow August 15/16th. Snow at upper elevations 12/8 (15 - 25cm) in the West and less further East. Rain to about 1850m on the 12/8. Facets (weak, sugary forms) have been found in places. These pockets of questionable strength appear to be 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. Melt/freeze crusts are now forming regularly especially, on North Facing slopes.

Mountain Weather

Friday - fine AM with some cloud PM. North West winds rising to gale force in the afternoon. Freezing level - 2000m dropping to 1300m in the morning.

Sliding Danger

Icy crusts have been widespread below about 1850m. These slick crusts may now be covered by a thin layer of fresh snow. The underlying pack remains shallow especially, at lower elevations. Rocks and icy areas may be lurking below a thin cover of snow. Carrying ski crampons and/or an ice axe and crampons is recommended.

Forecast Confidence

Moderate

  • The snowpack structure is well understood.
  • We are uncertain about how the timing or intensity of solar radiation will affect the snowpack.

New Zealand Avalanche Advisory (NZ Mountain Safety Council)

Regions covered