It's been snowing at our house for days now, and we're getting these weird hanging lumps of snow off of the roof in the back yard.  Every once in a while they fall off and make a noise like a body falling off of the roof.  It's not forming them in the front, so it must have something to do with the wind I guess.  I've NEVER seen it do this before in the 7 years we've lived in this house!