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Issued at 29/11/2014 8:23am. Valid till 2/12/2014 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:
Today’s winds and snowfall will build Wind Slabs in the alpine. We have a low confidence in this forecast due to a lack of observations, have a dig, get a handle on new snow depths and wind redistribution. Watch for steep terrain around ridge crests and any smooth pillows of new snow. These should settle out by early next week with some good weather for a couple of days.

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:
Our pesky Fiordland Wet Slabs continue to lurk. These are hard to predict but like all avalanches geographically isolated. The obvious glide cracks are the best give away. They are still limited to below 2200m. Though there is little old snow below 1500m the avalanches have been making it down cliff bands to about 1000m. Avoid hanging out below large snowfields for extended periods of time.

Tertiary 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
12pm - 5pm
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
Once the sun comes out tomorrow we are expecting to see a round of Loose Snow avalanches as the intense spring solar radiation heats the new snow falling today (Saturday). Theses may become active on shady aspects as the air temperature rises early next week. Watch for boot top snot and pay attention to the first signs of avalanching on steep sunny slopes around rocks. You can always wait till it cools off before heading down in the afternoons.

Recent Avalanche Activity

Recent Avalanche Activity
Some activity still being reported off the Milford Track (141128). Mostly size 2 and not reaching valley floor. Witness reports are a bit vague but we suspect our old Fiordland friend the gliding Wet Slab. No large Wind Slabs reported in the high Darrens.

Current Snowpack Conditions

Current Snowpack Conditions
Spring conditions dominate after heavy rain to high elevations. This is overlain by a thin layer of new snow out of the Western half.

Mountain Weather

Mountain Weather
Saturday: Snow to low levels (700m) with Gale westerlies. Freezing level 900m.
Sunday: Snow showers clearing north of Lake Gun. SW winds easing. Freezing level 1000m.
Monday: Showers in the south of the park, fine in the north and west. Southerlies strong at times. Freezing level 1000m.


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

Forecast by Mark Austin

Mountain Safety Council
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