Wind slabs have formed at higher elevations, mostly on north-facing aspects. The avalanche hazard has increased to considerable. The weather remains unsettled with an improving trend tomorrow, the 10th of July (Matariki). Showers and strong-to-gale winds persist over the next 24 hours.
Gale winds and snowfall over the past 24 hours have combined in the formation of a wind slab. This wind slab will be mostly on north aspects, but loading on west aspects is also possible. Sensitivity will vary depending on local terrain characteristics. Triggering by light loads or natural events is likely.
No natural or human-triggered avalanche activity has been observed or reported over the previous 24 hours. Over the past 24 hours, the weather and visibility have been poor, making comprehensive observations unachievable.
The hard, icy old snow surface is being buried by wind-transported deposits around sheltering terrain features such as gullies and drainages. These deposits are likely to be hard slab in character due to wind speeds. Exposed slopes, ridgelines, and south-facing areas are being stripped by the gale winds. Currently, any notable snowfall accumulation is limited to above 1400 metres elevation.
Showers with snow flurries to low elevations over the next 24 hours. Winds are southeasterly severe gale going into Friday, the 10 of July. The freezing level is 1400 metres, lowering to 1100 metres tomorrow. A strong southeast flow over central and northern New Zealand starts to ease today, while a ridge builds over the South Island. Tomorrow, a cold southerly flow covers the North Island, while a broad ridge of high pressure lies across the South Island.
A hard, icy crust exists on exposed slopes above 1400 metres. Early-season snow cover exists with exposed rocks and cliff bands. It's essential to carry the appropriate gear, crampons, and an ice axe. Taranaki requires a high degree of alpine skills. A targeted skill set will reduce the chance of an accident.
Low
New Zealand Avalanche Advisory (NZ Mountain Safety Council)
