New Zealand Mountan Safety Council

Mackenzie

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Issued at 23/08/2016 6:30pm. Valid till 24/08/2016 6pm

Ohau

Mountain
Current avalanche advisory
High Alpine

Above 2000 meters

Alpine

1000 to 2000 meters

Sub Alpine

Below 1000 meters

Avalanche Danger Scale
Avalanche Danger Scale
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Primary Avalanche Danger

Dangerous Aspects
high
Danger Rose
2
Highest Danger Rating
Likelihood
indicator
gauge
Certain
Likely
Unlikely
Size
indicator
gauge
Largest
Small
Trend
indicator
gauge
Increasing
No change
Decreasing
Time of day
clock
Time of day
All day
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
Near the divide, a moderate windslab danger exists above 2000m on S and E facing slopes as a result of westerly wind loading during the last storm. Take care to assess the local snowpack for signs of weakness before taking on steep terrain on these slopes. Slab avalanching is unlikely around the ski area backcountry.

Recent Avalanche Activity

Recent Avalanche Activity
Size 2.5 and 3 wind slab avalanches were observed in Hooker valley in Mount Cook on Monday morning. They were SE facing at about 2200m and run down 1000~2000m long and reached the valley floor. Nothing reported from the Ohau region.

Current Snowpack Conditions

Current Snowpack Conditions
A dusting of new snow fell on Sunday night at Ohau ski field, with a bit more up near the main divide. On steep, shady slopes with shallow snow cover, the snowpack is becoming weaker as the old buried rain crust slowly breaks down. In most other places the pack is pretty well settled and stable.


Mountain Weather

Mountain Weather
Rain developing in the tomorrow afternoon . Snow to 600 metres in areas. Northeasterlies, rising to gale for a time in exposed places during the afternoon and evening.


MetService
For more information go to: http://www.metservice.com/mountain/index

Sliding Danger

Slide For Life
Strong N to W wind stripped the snow on windward slopes and has left a hard slippery crust. There is also a rain crust below 1600m and the significant sliding hazard exists.

Forecast by Trevor Streat

Avalanche Forecast Regions:
Mountain Safety Council managed websites
Mountainf Safety Council websiteAdventure Smart websiteNew Zealand Avalanche Center