Natural disasters are naturally-occuring hazards that affects living things including human beings, animals, and plants. But what if natural disaster that is happening in our world is not really 'natural', what if it is man-made? Or do you believe that it is man-made? Well, regarding my take to this very interesting yet tremendous issue, I think that it is not impossible. With the knowledge, power, and technology the United States have, they can do almost whatever they want. We know something about how powerful their country is, but we do not really know its limitation and up to what extent their power can do. Government of every countries must have an action of investigation regarding this.
Personally I don't believe in the conspiracy theories of "manageable" natural disasters.
However, I do believe in science that has been saying all along: irresponsible approach to Mother Earth (shown by certain governments, including the current US administration) creates additional conditions to trigger more disasters (think last years horrendous hurricane season, and the forecast that this year there will be more than one "Irma" type of hurricane).