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Issued at 31/08/2015 6:48pm. Valid till 3/09/2015 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
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:
There is a possibility of storm slab avalanches lee to the Northerly half above 1200m. Cornice formation and slabs may develop at ridge crest and in the lee of terrain features overnight on Monday night and Tuesday. This will be exacerbated by a rising freezing level. Care will be required in avalanche terrain lee to the north especially at upper elevations and around ridge crest.

Recent Avalanche Activity

Recent Avalanche Activity
None observed.

Current Snowpack Conditions

Current Snowpack Conditions
Up to 15cm of snow has fallen during this last storm snow (25-8) accompanied by strong northerly winds. This was most pronounced on the western side of the park. Intermittent snow cover still exists on western aspects. Rain during Saturday saturated the snowpack below 1800m. At higher elevations the snow pack is mainly strong but a mid pack weak layer may still be problematic above 1900m on all aspects except north.

Mountain Weather

Mountain Weather
Rain, heavy at times, easing to showers. Snow to about 600 metres at first, gradually rising. Severe gale NE gradually easing to gale, and tending NW evening. A total of over 20 cm of snow is likely at upper elevation. Freezing level will rise from 1400 rising to 2300 metres afternoon.


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

Forecast by Matt Wilkinson

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