Tuesday: Mainly cloudy with isolated flurries and a trace to 5 cm of new snow. Strong to extreme southwest winds. Freezing level to 1800 metres after weak overnight cooling with alpine high temperatures around -3.Wednesday: A mix of sun and cloud. Moderate northwest winds. Freezing level to 1600 metres after weak overnight cooling with alpine high temperatures around -5.Thursday: Mainly cloudy with cloud increasing and flurries beginning in the afternoon. Light west winds. Freezing level to 1600 metres with alpine high temperatures around -4
Reports from Saturday in the Castle area showed a couple of storm slabs that released to size 1.5 and 2. The smaller avalanche occurred naturally while the size 2 was explosives-triggered.
Up to 35 cm of new snow fell over the region over the past few days. This new snow was initially redistributed by strong easterly winds before winds switched to the southwest. As a result, wind slabs are now likely to be found on a variety of aspects. Below the wind effect, this recent snow will take some time to form a reliable bond to the old snow surface, which consist of crusts up to 2100 metres and dry snow or surface hoar on north aspects above 2100 m. Below this layer the mid-pack is is well consolidated. Deeper in the snowpack (50-80 cm down) the surface hoar buried in mid-February is now considered dormant. At the bottom of the snowpack you'll find a combination of crusts and facets that is reportedly widespread.