I believe and I have a big feeling that our weather is modified. One very obvious reason will be the evilness of human. From the pollution we bring from our cars, to manufacturing buildings, and many more types of pollution - our ozone layer is surely disturbed and will soon give up.
I believe with the advancement of technology and how imagination proves that we can do everything - weather can be manipulated and made. Super typhoons are for me caused by some alliance manipulating the possible disaster. I'm talking about top developing nations working together.