Dammitt RaY , again !!

We had a similar wind storm and heavy snow in spring one year where the wet snow was to heavy on the new leaves, weighted a tree down badly and a neighbouring tree fell which came close to damaging my property. That’s when I did some digging around and learned it would be my insurance to cover it and not his anyway. Are you sure just because the tree originated on his land that he liable and his insurance is to cover it? in alberta Canada
the act of God clause is probly included in all policies , but , in Okla. there is a clause included , that ''if'' he knew about it and did nothing , it was negligence , making him liable ...