New Zealand Mountan Safety Council

Fiordland

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Issued at 23/08/2017 4:17pm. Valid till 26/08/2017 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
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:
New Snow from last week has had a good chance now to settle. The warmer sunny slopes will have bonded faster. Watch for steep loaded areas of wind slab in shady areas. be mind full that in the high alpine (above 2000m) Wind slab and PWL as mentioned below could still be a player. Exercise safe travel techniques, like one at a time, and watch your run outs.

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:
This PWL could still remain in isolated high cool areas. Due to the very cool early season conditions. We have suspect layers such as sugary facets. and Hoar crystals deep in the snow pack. Mainly living in the Shady aspects. (southern). Warm rain last week will have tested this layer below 2100m. . And possibly cleaned it out. This layer could still remain above 1800m in shady aspect and be well buried / bridged. A single person will struggle to set of a large avalanche, watch for significant loading like a group of people, more snow or rain. Look for previous avalanche sign, If no avalanche sign exists out of a high alpine start zone think what may be lurking deep in the pack.

Tertiary 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 - 4pm
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
The last few sunny warm days will have tested the upper snow pack, Still remain vigilant during the heat of the day. And think where could a slow moving wet slide take me or what could it do to the above hazards. (trigger)

Recent Avalanche Activity

Recent Avalanche Activity
Last activity was from last weeks heavy rain to 2200m. This created some size 3 and numerous size 2 avalanches around the park.
Most of them were slab either within the new storm snow. (smaller), and a few wet slabs, some spotted pulling out from ground. (very big). Since this cycle we have had smaller loose wet slides in the sunny aspects between 1600 and 2400m.








Current Snowpack Conditions

Current Snowpack Conditions
Below 1700m the snow pack is well consolidated with a layer of new snow that is or has become reasonably well bonded.
Above 1700m, the solar aspects have settled now thanks to some clear weather and slightly warmer temps.
The shady aspects above 1700m still consists of layer to be mind full off. Layers such as Facets and Hoar crystals still exists deep in the pack. They are well buried / bridged.

.

Mountain Weather

Mountain Weather
A slow moving front is set to travel over the park tonight (23rd) NW FL 1700m with 5-10mm of rain in the North.
This front will stall and build through till Saturday.
Expect rain on Friday and heavier on Saturday with the FL rising to 2000m.
NW to Northerly winds dying out later in the weekend, start of next week shaping up to be a good. one.




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

Forecast by Adrian Braaksma

Avalanche Forecast Regions:
Mountain Safety Council managed websites
Mountainf Safety Council websiteAdventure Smart websiteNew Zealand Avalanche Center