New Zealand Mountan Safety Council

Mackenzie

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Issued at 29/05/2017 11:26am. Valid till 1/06/2017 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:
In areas near to the Divide and above 1800m-2000m there has now been enough new snow deposition and continued moderate wind transport from the NW or Northerly direction to have created wind slab possibilities of specific lee to the wind and cross-loaded slopes. Take the time to have a dig and check out what the bond between the old and the new snow surface is like.

Recent Avalanche Activity

Recent Avalanche Activity
No recent reports but if you are high up and close to the Divide we'd love to hear what you are finding as "Winter is coming..."

Current Snowpack Conditions

Current Snowpack Conditions
Small snowfalls have come in over the last week or so. The last reports from the hills mentioned a supportive crust, which will soon be buried as the next storm comes in.
Between 40cm and 1m of new snow has fallen in the last week to ten days above 2000m and another burst or two likely early to mid week. Overall it will create a good early season base on the Glaciers and with multiple small snowfalls and moderate wind driven saltation (movement of snow across the ground to near ground level), we ought to see a gradual filling of crevasses from the bottom up which is preferable to all at once covering in a big dump.

Mountain Weather

Mountain Weather
North-westerlies pick up later on Monday and a period of precipitation Tuesday morning/afternoon, falling as snow above 1800-2000m, mostly clearing by Wednesday other than a few cloudy periods.


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

Sliding Danger

Slide For Life
Although the new snow at upper elevations tends to be soft or "break through" at this time of year. There is often a hazard from a thin layer of iced up moisture over rock lower down, "Verglass" which has been the cause of several tragic occurrences over the past few years.

If it's been a cold night and the rock looks wet, be extra careful. Crampons can be ineffective unless you have practised using them on rock, but you should carry them. Often is just a case of waiting for the sun to work it's magic if you can.

Forecast by Dave McKinley

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