The pilot's failure to avoid an encounter with known adverse weather conditions, which resulted in an in-flight upset, temporary loss of control, and loading of the airframe, engine, and propeller that led to the in-flight separation of the propeller and the subsequent forced landing. The root cause for the separation of the propeller could not be determined based on the available information.

the pilot's premature liftoff which resulted in an inadvertent stall and a subsequent collision with trees.