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Issued at 22/10/2014 5:16pm. Valid till 25/10/2014 6pm

Fiordland

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:
New snow above 1500m (20cm) on Thursday night will initially be blowing about from the NW, and then change to the SW Thursday night. Watch for wind slabs forming from Thursday especially in the higher altitudes in the northern Darrans.

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:
From 2000m below watch for isolated wet slab releases. The snow pack has been well rain soaked from a series of warm NW’ters this week. The next couple of days will be warm and this will free some water to soak the base of the snowpack. Be observant during your travels, watch for obvious glide cracks, and be aware of their run outs. This includes the valley floors and under the big cliff faces.

Recent Avalanche Activity

Recent Avalanche Activity
The crowns of two large wind slab avalanches were observed today on Pembroke and Tutoko. These avalanches were on southerly aspects starting at 1800m and 2400m respectively and size 3. They probably ran on Monday the 20th during the last snowfall.
Numerous smaller wet slabs have released and glide cracks and folding of the snow is common.

Current Snowpack Conditions

Current Snowpack Conditions
A spring snowpack dominates though there has been up to 1m of snow in the high alpine. There are now extensive glide cracks below 2000m as the snow starts to lose grip on the rock slabs. A couple of clear days have helped the glide / wet slab activity lessen. The Kepler and the major passes on the Routeburn and Milford are clear of snow at present. This can change rapidly.

Mountain Weather

Mountain Weather
A front approaches the Fiordland region and looks like passing over the park Thursday night. Severe Gale NW is forecast to change to Severe Gale SW on Thursday afternoon with a brief clearance on Friday before another weather event starts over the weekend. We are expecting about 20cm of snow above 1500m, mostly out of the NW. This and the existing dry snow up high will get redistributed by the SW overnight Thursday.


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

Forecast by Mark Austin

Mountain Safety Council
Avalanche Forecast Regions:
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