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Issued at 7/07/2015 7:43am. Valid till 8/07/2015 6pm

Craigieburn Range

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:
There is a MODERATE danger from wind slabs on upper and middle elevation terrain. Strong W and NW winds plus new snow that fell yesterday has caused new wind slabs to form just under ridgelines and cliffs. Watch steep (>35 deg) slopes where smooth looking wind slabs or large bulging drifts may be present.

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:
There is a MODERATE danger from cornice failure at upper elevations. Cornices have a tendency to break far back from the edge and can propagate many metres long. Watch for large overhanging features along the leeward edge of ridgelines and avoid going anywhere near them.

Recent Avalanche Activity

Recent Avalanche Activity
Cornice failure avalanches were observed in the southern end of the Craigieburn Range on Monday (see photos on our observations page). These likely occurred 48-72 hours prior. Ski patrol in the northern and southern ends of the Craigieburn Range tested new wind slabs with explosives on Monday and had no results.

Current Snowpack Conditions

Current Snowpack Conditions
From 10-20cm of new snow fell in the Craigieburn Range yesterday. Strong to gale strength W winds blasted the region and transported much of the storm snow that fell. Professional observers in the Craigieburn Range have reported seeing new wind slabs at upper elevations on SW S SE and some N and NE aspects. Observed slab development has been isolated to areas just under ridgeline or in catchment areas just under cliffs and rocks. Many areas have again been stripped back to ice and rock especially NW and W facing slopes.

Our older snowpack is a bit different everywhere you dig. A layer of faceted snow still exists below a variably thick ice crust in some locations. This facet-crust combination has shown good stability lately but could be something to watch out for in the future. For more in depth discussion and a photo of the snowpack go to the "View Observations" page and click on the Monday July 7th entry.

Mountain Weather

Mountain Weather
We might possibly see a reprieve from the wind today! Only moderate W winds are expected with light precipitation that should clear by late morning. It will be a cold day with the freezing level forecast for 200m. Our next best chance for snow looks to be Thursday.

For more information check out the MetService link below:


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

Sliding Danger

Slide For Life
Some slopes are still very icy at present. Travel carefully and be prepared for conditions to suddenly turn from soft powder to boilerplate ice in a matter of just a couple of turns. Carrying an ice axe and crampons is a good idea if you travel in the backcountry today.

Forecast by Brad Carpenter

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