This tree was not toppled. It was pulled up from it's roots and dropped. The damage done to the home is significant because there as not just 'some' weight of the tree, it was dropped with velocity and weight acting on the structure.It isn't a minor system.
The heat is coming from the southern hemisphere, not simply the equator. It is billowing up across Indonesia just south of China. (in the left upper corner). 
The water vapor then carries the heat east across the Pacific Ocean.
Then into the arctic oscillation. The water vapor is dense once it starts to condense with colder air. There is heat transfer and the velocity increases. (click here) The mixing is rather incredible after that is rather incredible as it enters the continent.
The seven year old died when the car he was riding in was tossed by the tornado.
