Our above freezing temperatures have cause all of the snow-buildup on the roof to start to slowly move down-slope. I am always fascinated when this happens, to see the snow curl, yet not break off, when it extends over the end of the roof. Ice that has formed at the bottom of the snow-load is amazingly strong and keeps the snow in one piece until eventually its weight does cause it to break, or until I get a shovel and break it. (I am always in fear that it might break and fall on one of our pets.)
Our house has two roof levels, and eventually, we will hear and feel the “Boom” when snow from the upper level finally breaks off and falls to the lower level.
The photo below shows the overburden of snow hanging outside the upstairs window.