New Zealand Mountan Safety Council

Mackenzie

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Issued at 23/08/2017 5:31pm. Valid till 24/08/2017 6pm

Aoraki/Mt Cook

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
Report TutorialPrint Reporthear report

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:
NW winds will pick up this evening and might form wind slab on SE aspects below exposed ridgelines. Avoid entry to stiff wind packed snow on steep slopes and step back if you hear drumming sound or observe cracking.

Secondary Avalanche Danger

Dangerous Aspects
high
Danger Rose
1
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:
Skier triggered sluffs are possible on very steep shady slopes. These could be big enough to knock an unwary skier or rider off their feet and carry them down the slope. The hazard can be managed by avoiding steep polar aspects above cliff bands , bad runouts or gullies that could funnel debris or prevent escape.

Recent Avalanche Activity

Recent Avalanche Activity
A few small loose wet slides ran out of steep solar terrain in the afternoon. A few small skier triggered sluffs at size 1 ran on steep south aspects.

Current Snowpack Conditions

Current Snowpack Conditions
10 to 15 cms of cold southerly snow lies over firm wind pressed snow at higher elevations on polar aspects or a rain crust lower down.
Sunny slopes have consolidated well with corn snow found at lower levels. The snowpack does still have some deeply buried weaker layers that produced the deep slabs that ran last week but these are unlikely to be triggered by anything less than very heavy storm loading.

Mountain Weather

Mountain Weather
NW winds will pick up to 60km/h at ridge top tonight and tomorrow. More precip is forecast from Friday into the weekend.


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

Forecast by Taichiro Naka

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