That explains the snow accumulation. There are places in Japan that receive amounts of snow similar to your area. For densely populated areas, I suspect that some Japanese towns are the snowiest in the world.
Over here in Norway the wettest places are near the west coast and the meteorological station receiving most precipitation gets 358 cm annually (most ever recorded in one year: 560 cm). But at the west coast rain is most common even during the winter. The mountains get more precipitation. It's been estimated that the actually wettest place, a glacier, gets 500 cm on average. The precipitation is fairly evenly spread out during the year.
The nearest official met station where I live gets about 120 cm a year, of which I guess about 1/3 comes as snow (even in January it sometimes rains). Today the snow depth is 95 cm, which is pretty typical for mid March and the depth is at the maximum around this time of the year. The record is 302 cm (9th April 1951).
Snow depths of 2 - 3 meters are not very uncommon at elevations approaching 1000 m even near Oslo, as seen in this photo taken a few years ago (9th March 2014 at about 750 m elevation), but this is about as snowy as it gets: