We're back to winter with new snow - Yah!
Tests and time from snowfall have indicated a improving trend. But please utilise safe spots and good terrain choices. Remember LOW does not mean NO (hazard)
Wind slab danger could still exist on east to south eastern aspects above 1400m New snow will be on top of a potentially very firm surface.
This concern is likely to be more pronounced at higher elevations in the west and north of the forecast area .
As we start to see the sun, there will be a period of loose wet avalanching. This will mainly be from steeper terrain affected by the warming affect of the sun. Stay clear of such terrain and avoid picnicking under such.
Several natural small slabs occurred on east to south eastern slopes close to ridgecrest on Ohau snow fields on the 24th. Expect similar natural events in the rest of the forecast area, potentially larger closer to the Divide. But nothing seen in the last 48rs, so probably settling out.
Please use the Public Observations link if you see anything interesting.
Approximately 15–20 cm of new snow fell above 1850 m between 13–14 July, accompanied by severe NW winds that later shifted to the SW. In exposed terrain, the strong winds stripped the new snow back to the ground or to slick rain crusts.
Wind loading created pockets of dense wind slab on east through south aspects in isolated pockets, but can be 30-40cm thick. They so far haven't been reactive to tests.
Below 1850 m, precipitation fell as rain, forming a widespread rain crust on all aspects.
Expect 10-15cm new snow on top of this firm layer on Thursday, mostly above 1800m and 5-10cm on Friday to around 1200m. Strong winds will have redistributed this the mostly eastern and south eastern aspects. And a final flick of small amounts to the north from southerly winds.
Cold, calm conditions have further "dried" top 10-15cm - making for great riding conditions.
Fine with morning frosts, possibly severe. High cloud developing in the afternoon.
Moderate north west winds and a freezing level slowly rising to 1900m.
Firm snow conditions are present on west-facing slopes near ridgelines and at lower elevations where a rain crust exists. These hard surfaces may present a sliding hazard, particularly on steep terrain and may be cunningly hidden under new snow.
High
New Zealand Avalanche Advisory (NZ Mountain Safety Council)
