The best hope is to have underground or concrete dome type buildings. Both will stand up to trees falling or thrown fairly well, both will stand up to almost any tornado when properly executed.
A "normal" stick built house can not be expected to stand up to a "direct strike" from any natural disaster, whether it is fire, wind, flood, tornado, earthquake, insects or tree. Distance to the tree line, landscaping with fire resistant plants and trimming, many methods can be used to better the odds in your favor, but they are still odds. The only "sure" way is a totally different design philosophy. There are many earth bermed, underground, bunker, concrete dome, etc. types of designs that are orders of magnitude more survivable. Even an old fashioned log cabin will stand up to more things than a modern quarter million dollar flimsy stick construction home.