Many wonders why, if there is a God, He allows that bad things such as war, storms, hurricane etc, happen. Well, the answer to this question is simple. We, humans, create the most of it by our bad choices. War is often a product of bad political choices. God can not be held responsible for
our bad choices. He can not either stop ( note that He has the power though) the pain that is caused by our imperfection or unrighthousness. We have our free agency, and free agency is essential to happiness. Only in some individual cases, God can cure someone or stop pain, but not on general basic. Otherwise, God would stop being God, and that is not possible.
Storms are caused bye pollution that we ,humans, are responsible for. God does not send these trials, but He allows that they happen. However, it is not excluded that He sometimes makes it occur. There is though always a reason for it, something greater is coming out of it.