"snökanon" (which I assume translates literally as "snow cannon") - the Swedish term for their equivalent of what the North Americans would call lake-effect snow (where cold air picks up moisture in its low levels as it passes over water and then dumps it on the first bit of topography it hits).
Cool term, haven't heard that one before! Yes, areas west of Oslo (such as Drammen) were hardest hit with upwards of 1m snow that weekend. Even Oslo has ok ski-conditions right now. Lots of fun data on Senorge.