A little new snow on the range. With the freezing level a little lower, Wind Slabs are the hazard to watch.
Moderate West to Southwesterly winds will blow any available snow onto Lee aspects. Watch for wind direction changes throughout this stormy period and adjust plans accordingly. These slabs could be difficult to trigger however be cautious if seeking steep terrain on polar aspects above 1600m.
Rain on snow will cause the service to soften increasing the Loose Wet hazard. If the sun decides to make an appearance then solar aspects will soften quickly too. Be aware of slopes above during the heat of the day. Rollerballing is the first sign of the surface loosing cohesion.
A few small Loose Wet avalanches reported 09/08.
Snow coverage across the forecast area is super variable. Up to 150cm in some areas down to rime covered rocks. Tests above 1700m show a thick rain crust is found closer to the ground (30-60cm down) on most aspects with a thin laver of sugary crystals (Facets) observed both above and below. Although not reactive to skier traffic right now the lower snowpack will require monitoring over the next few weeks. New loading by snow, wind or rain may affect this layer so we will need to remain vigilant to see if it weakens or gains strength.
Monday: Mostly cloudy. Scattered showers, heavier and more widespread north of the Rakaia River in the morning. A few late morning and afternoon fine spells before low cloud and drizzle spreads in from the east in the evening. Southwest winds easing in the afternoon. Freezing level 1700m lowering to 1400m in the morning.
Tuesday: Fine, but becoming overcast in the evening. Light. Northeast winds developing in the afternoon. Freezing level 1200m rising to around 2000m in the morning.
Wind stripped areas and exposed ridges will be very firm. Ice axe and Crampons are recommended if venturing out.
Moderate
New Zealand Avalanche Advisory (NZ Mountain Safety Council)
