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Issued at 28/07/2014 4:31pm. Valid till 30/07/2014 6pm

Two Thumbs

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
3
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:
If there is sufficient snow loading out of the NW onto the weak surface snow that lies over an old rain crust on many shady slopes we will see slab avalanche activity. Check the bond between any freshly drifted snow you encounter and its bond to the underlying crust before crossing steep terrain.

Secondary Avalanche Danger

Dangerous Aspects
high
Danger Rose
3
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:
Loose wet snow avalanching is likely to occur once enough rain reaches east off the divide.

Recent Avalanche Activity

Recent Avalanche Activity

No reports of recent avalanching... in fact no reports of any kind have come to hand... If you been out and about in the two thumbs feel free to make an observation on the "report an observation " link on the Mackenzie page.

Current Snowpack Conditions

Current Snowpack Conditions
Up to 20 cms of recent snow lies over the june rain crust, or just on rock and tussock. On sheltered shady slopes the recent spell of mostly fine cold weather has facetted out surface layers to the point where they're now quite weak and sugary. Recent SW winds have led to some windloading on lee slopes and in some places shallow windslab will lie over a weak crust facet sandwich. Exposed western aspects will be shallow, wind stripped, and rocky. With an incoming unstable NW flow along with gale winds, snow and rain the stability is certain to change for the worse over the next 36 hours.

Mountain Weather

Mountain Weather
NW winds and cloud building ahead of the next storm


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

Forecast by Trevor Streat

Mountain Safety Council
Avalanche Forecast Regions:
Mountain Safety Council managed websites
Mountainf Safety Council websiteAdventure Smart websiteNew Zealand Avalanche CenterNational Incedent Database website