The Teacher in Ecclesiastes states that there is a time and a season for everything. 

 “a time to be born, and a time to die; 

  a time to plant, and a time to pluck up what is planted; 

  a time to kill, and a time to heal; 

  a time to break down, and a time to build up; 

  a time to weep, and a time to laugh; 

  a time to mourn, and a time to dance; 

  a time to cast away stones, and a time to gather stones together; 

  a time to embrace, and a time to refrain from embracing; 

  a time to seek, and a time to lose; 

  a time to keep, and a time to cast away; 

  a time to tear, and a time to sew; 

  a time to keep silence, and a time to speak; 

 a time to love, and a time to hate; 

  a time for war, and a time for peace.” 

(Ecclesiastes 3:2-8)

“Just because you can’t see or imagine a good reason why God would allow something bad to happen doesn’t mean there can’t be one.” -Tim Keller
That there is an appointed time or season implies God has a purpose and a foreordained plan, even if he is not the direct cause of something. God may intervene in nature or in history and order something to occur, or he may allow an event due to the free will of people, or the blind operation of nature’s laws. Since God has the power to intervene, we rightly see him as ultimately responsible. 

God has a purpose, which is being worked out in the world. You and I have free will and the responsibility to seek God and discover his will, and the way he intends things to be.

God “works all things after the counsel of his will” (Ephesians 1:11). God’s will is bound to his character, and God is love. Therefore, nothing God wills is outside his love. God always has a reason and a purpose for causing or permitting things to happen. We call this Providence.

God is not the direct (efficient) cause of severe weather events like Hurricane Harvey, but he is the final cause. That is, God has a reason for creating the world, and the laws by which it operates, and for giving humans a will and permitting them the freedom to exercise it. He has a reason for permitting humans to sin, and for placing the entire earth under a curse of separation from his immediate life-giving care. God has a reason for subjecting the creation to futility and bondage to corruption (see Romans 8:20-21). 

God’s plan has always been for the present creation to be temporary. Even before the fall, Eden was not intended to be the final state. God realized that human beings would sin, and that has always been part of his plan. God is not the efficient cause of sin, but he has a purpose for permitting it.

The final cause, the purpose for every event that takes place under heaven, is the hope of eternal life with God. This hope involves God’s plan to adopt believers as his children and make them like his only begotten Son. This hope extends to the recreation of heaven and earth. God’s purpose for creating everything is so you and I may have a relationship with him as Abba-Father for all eternity.  What an amazing plan!  So, hang on: This ain’t heaven… yet. But heaven is coming!

“Then I saw a new heaven and a new earth, for the first heaven and the first earth had passed away, and the sea was no more. And I saw the holy city, new Jerusalem, coming down out of heaven from God, prepared as a bride adorned for her husband. And I heard a loud voice from the throne saying, “Behold, the dwelling place of God is with man. He will dwell with them, and they will be his people, and God himself will be with them as their God. He will wipe away every tear from their eyes, and death shall be no more, neither shall there be mourning, nor crying, nor pain anymore, for the former things have passed away.” And he who was seated on the throne said, “Behold, I am making all things new.” (Revelation. 21:1-5).
For now, there are events that take place in our world and in our lives for which God does not reveal the an immediate purpose. 
However, we can be assured that a good and just God has good reason for what he does, and the ultimate purpose is to make the saints holy like Jesus, and to bring many sons and daughters to His glory (Heb. 2:10, Rom 8:29-30)

We can be assured, then, that whatever happens will result in our good and God’s glory (Romsns 8:28).