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Issued at 1/10/2014 6:32pm. Valid till 3/10/2014 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
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
10am - 4pm
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
There is a moderate danger of loose wet avalanches, especially during the warmest part of the day. Avoid steep unsupported start zones where the snowpack is loose and uncohesive . Glide cracks and areas of crumpled snow are signs of instability and can release without warning. Avoid traveling under these areas during the warmest part of the day. Any release may begin at the surface and then involve the entire depth of snowpack and travel considerable distance.

Secondary 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:
With forecasted snow associated with strong westerly winds we may see storm slab form on steep start zones lee to the westerly half. Avoid steep start zones where new snow has acumulated untill the bonding between new and old snow has been checked.

Recent Avalanche Activity

Recent Avalanche Activity
Loose wet activity has been observed in the north of the park. It is expected that this occured on the afternoon of the 26th.
Glide cracks and defomation have also been observed.

Current Snowpack Conditions

Current Snowpack Conditions
The snowpack has completed its transition into a spring snowpack on all elevations and aspects. Southerly aspects are remaining in a frozen state for most of the day. Any aspect that is receiving solar radiation is going though a melt freeze cycle and depending on its aspect and angle relative to the sun depends on how loose and uncohesive it becomes during the hottest part of the day.

Mountain Weather

Mountain Weather
Cloud developing with chance of snow down to 1200 metres Westerly rising to gale about the tops.



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