New Zealand Mountan Safety Council

Canterbury

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Issued at 23/08/2017 6:03am. Valid till 24/08/2017 6pm

Mt Hutt

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
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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
12pm - 5pm
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
The 10 cm of new snow on the surface will see an afternoon loos wet avalanche cycle, with northerly facing slopes having a MODERATE hazard rating. While these avalanches will likely be too small to bury someone, they will expose a slick ice crust beneath and could pose serious risk if a backcountry user become entrained with the moving wet snow. Choose travel times wisely and avoid areas that are already showing wet activity, namely "rollerballing" wet snow.

Recent Avalanche Activity

Recent Avalanche Activity
Small loose wet activity was noticed towards the end of Tuesday. None of this activity resulted in significant avalanche observations.

Current Snowpack Conditions

Current Snowpack Conditions
There is 10 cm of new snow from Monday's storm. This snow is well bonded to the old snow surface. Northerly slopes saw a warming trend, which made for a melting and refreezing events, which should make the snow surface firm until the afternoon sun heats up the snow. Shaded southerly facing slopes still have soft dry snow on the surface. Below the surface snow, is a very strong snowpack, which has shown no recent evidence of significant avalanche hazard.

Mountain Weather

Mountain Weather
Wednesday will have fine conditions. Moderate Northwesterly winds will remain steady through the day. Temperatures will increase to just above freezing. Lots of sun, and no precipitation expected.


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

Sliding Danger

Slide For Life
Sliding hazard remains, but can be avoided in areas where the 10cm of recent snow hasn't refrozen.

Forecast by Luke Ochs

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