I've had this debate on this forum before. The claim that we have free will and the claim that God can accurately predict natural disasters are logically incompatible. If we have free will, then the future is not exactly predetermined. If the future is not exactly predetermined then even an omniscient God cannot perfectly know the future because the future is logically unknowable. It is no different to an omnipotent God not still not being able to create square circles.
OK, given that unless you are a young-earther you also accept that the existence of God is compatible with an evolutionary explanation of the origin of species, you also have to say that God is not in control of diseases.
Most Christians do not believe in a young earth and do not believe that God engineered every species on Earth. Natural disasters and diseases appear to be an unavoidable part of our reality. Human-created evil appears to be avoidable, at least theoretically.