Strong solar radiation Sunday, could produce increased avalanche activity on southerly aspects.
This crust facet layer 30 to 40cm down has gradually developed a slab above it. Be very careful on steep treeline and alpine slopes that face south and west. When traveling in avalanche terrain It's easy to dig down and look for the layer.
Clear weather Sunday will continue to produce strong solar outputs on southerly aspects. Freezing levels will remain near valley bottom. Increase cloud cover Monday will bring a trace a precipe and moderate to strong ridge top winds.
5-15cm of new snow overlies a melt freeze crust from Thursdays warming, this crust can be found up to 1900m. Above 1900m, 40 cm of previous storm snow has solidified into a slab overlying the February 16 sun crust on steep southerly aspects. This combination should now be watched closely, as it produces whumphs and tests indicate propagation.
Increased solar outputs Saturday initiated isolated loose dry activity out of extreme terrain. Evidence of recent avalanche activity on the Feb 16 persistent weak layer was observed on steep southerly aspects at treeline, producing avalanches to size 1.5.
