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Issued at 3/07/2015 1:39pm. Valid till 4/07/2015 6pm

Tongariro

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:
The danger will increase to considerable over Friday night and into Saturday. Fresh windslabs will rapidly form on top of the current slick and icy surface. This is good recipe for a poorly bonded slab so you can expect touchy conditions up high. Around the 1800 - 2000m mark it looks as though the new snow will be quite moist, so this should stick a little better, but as soon as you move up into the colder drier snow there is a good chance of human triggering. The winds will shift around from North West to North East, so you can expect to find this windslab on a variety of aspects depending on where you are in the region. The nasty weather, firm icy conditions on windward slopes, and the building windslab danger on leeward slopes will make it quite challenging to get out in the backcountry. If you do find your self out there take a conservative approach. Avoid all areas of fresh wind loading.

Recent Avalanche Activity

Recent Avalanche Activity
No new activity as of Friday midday.

Current Snowpack Conditions

Current Snowpack Conditions
As of Friday midday the snowpack is strong and stable thanks to an impenetrable ice layer on the surface of all aspects and elevations where there is snow on the ground. The main concern is windslab which is expected to form over Friday evening and into Saturday. This will be sitting on a very slick ice layer which means there is a good chance it will bond poorly.

Mountain Weather

Mountain Weather
The front looks set to hit with heavy snowfall over Friday evening above around 1800m and strong to gale North West winds. You can expect the precipitation to ease back by Saturday morning with the winds shifting to a lighter East to North Easterly.


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

Sliding Danger

Slide For Life
You can expect icy conditions on windward slopes.

Forecast by Ryan Leong

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