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Issued at 1/09/2014 7:32pm. Valid till 4/09/2014 6pm

Nelson Lakes

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
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
11am - 3pm
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
There is a possibility of wet snow avalanches on solar aspects during the warmest part of the day. It is expected that any activity would be small. Avoid steep start zones where solar radiation is strong enough to affect the snowpack making it become loose and saturated.

Recent Avalanche Activity

Recent Avalanche Activity
No new avalanches observered.

Current Snowpack Conditions

Current Snowpack Conditions
The first week of August saw up to 50cm of snow fall in the park. This has been associated with winds from the northwest and southwest.
It is expected that most loading has occured lee to these aspects. Cornice development is also expected to be widespread.
Early season snow was subjected to heavy rain events in early july to high elevations. This created two rain crusts which have promoted facet growth thanks to cold and clear conditions. This combination of a persistant weakness(large facets) at the bottom of the snowpack, which received extensive loading from the westerly half is still a concern at upper elevations. Recent warm temperatures have increased the stability of this layer. North aspects are now spring like snow due to solar radiation and warm air temperatures.

Mountain Weather

Mountain Weather
Cloud tomorrow with light southeasterly winds. Freezing level 1800m.




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

Forecast by Adrian Briggs

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