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Issued at 31/07/2014 1:02pm. Valid till 1/08/2014 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
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 of wet slab avalanches being triggered by human activity in steep terrain facing the SE half. The wind slab that was predicted to have been formed at high elevations (above 2300m) during the previous 24 hours now has the added weight of another 10-15cm of new snow to support as well. If the freezing level forecast is accurate we will get rain and snow to the top of the peaks in the park in the next 12 hours which will add more weight again. It is likely the danger will increase over the next 24 hours.

Secondary 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
All day
Alpine level
High Alpine: Above 2000m
Alpine: 1000 to 2000m
Low Alpine: Below 1000m
Description:
Loose wet avalanches will be a possibility during this period of warmer temperatures, until things cool down and refreeze again after the weekend. Natural avalanches are unlikely, but it is worth being cautious while traversing, climbing, or descending steep slopes. A good way to avoid this problem altogether is to avoid anything steeper than around 30 degrees.

Recent Avalanche Activity

Recent Avalanche Activity
No new activity observed or reported.

Current Snowpack Conditions

Current Snowpack Conditions
Further rain below 1800m over the last 24 hours has resulted in a completely wet snowpack in these elevations. Above 1800m a further 10cm of very wet snow has been glued onto yesterdays new snow surface (10cm of wet snow). We aren't seeing any results from tests up to 2200m today. Rain and snow to higher elevations will have added weight to yesterday's windslab above 2200m.

Mountain Weather

Mountain Weather
Further snow and rain from the NW over the coming 24 hours - starting as rain and turning to snow through Friday. Freezing level starting it's climb to cruise altitude of 3100m with a level off in the 2500m area.


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

Sliding Danger

Slide For Life
Variable surface conditions will exist. Be prepared for it all.

Forecast by Andy Hoyle

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