South Coast

Enjoy the stability while it lasts. Avalanche danger will spike on the South Coast as Monday's storm delivers up to 50cm of new snow to the region.

Moderate - Intensity of incoming weather systems is uncertain on Monday

Sunday: A mix of sun and cloud with no new snow. Winds light to moderate from the west. Freezing level to valley bottom with alpine temperatures to -7.Monday: 30 to 50cm of new snow with strong southwest winds. Freezing level rising to 700 metres with alpine temperatures near -1.Tuesday: Continued snowfall with up to 10cm accumulating. Strong southwest winds easing to moderate. Freezing level rising to 1000 metres with alpine temperatures approaching 0.

There are no new reports of avalanche activity.

Snowfall from the past 24 hours has deposited 15-20cm in the alpine and at treeline on the South Coast. This new snow covers a 2-3cm rain crust that formed on December 20. The crust overlies well settled storm snow from last week's series of storms. The storm snow seems to have a good bond to the layers below, despite the surface hoar and faceted snow that can still be found here. An old rain crust is reported to be down 150-180cm in the North Shore mountains. This layer has strengthened in snowpack tests and is considered unlikely to trigger in most places now.