New Zealand Mountan Safety Council

Mackenzie

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Issued at 28/07/2016 9:52am. Valid till 29/07/2016 6pm

Ohau

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
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:
Human triggered storm and windslab avalanches will be increasingly likely on steep S and E facing slopes above 1500m with further snowfall and wind in the forecast over the next few days, especially near the divide where snowfall totals will be higher. Be observant of the local loading patterns as the NW to SW wind shifts take place, pluming snow off ridge lines should give an obvious clue as to where the snow is heading. Unpleasant conditions on ridge lines with a very cold windchill could lead to a hurried decision. Rock studded avalanche runouts could mean a nasty ride if you get it wrong. Continuing unsettled weather and snowfall means conservative decision making would be wise.

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:
The cornices en route to Dumbell lake are reportedly much larger than normal. Fight the urge to peek over the edge, give them a wide berth and live to ride another day.

Recent Avalanche Activity

Recent Avalanche Activity
No reports. Some avalanching up to size 2 on steep S and E aspects are likely to have occurred near the Divide with the passing of a front overnight Wednesday.

Current Snowpack Conditions

Current Snowpack Conditions
Wind continues to drive the character of the broader Ohau snowpack as it lives up to its Maori translation: 'windy place'. Ohau reports about 15cm Thursday morning, with about 30cm nearer the Divide above 1500m, with a dusting right down to 1200m. W winds will be continuing to build potentially sensitive windslab on and about slopes facing E and SE. Further snow is in the forecast over the next 72 hours, with strong winds out of the NW through SW. This will keep a heightened avalanche danger on many slopes above 1600m.

Mountain Weather

Mountain Weather
Fast moving fronts, strong W winds, and low elevation snow will mean a rising avalanche danger over coming days.


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

Sliding Danger

Slide For Life
Continuing gales out of the W mean any exposed slopes could be firm.

Forecast by Ben Taylor

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