I am saying that nothing happens without God's permissive or discretive will.
How is this compatible with the human-freewill-hypothesis?
Although you (we) have a will, a volition, I believe it is only free in that you (we) exercise it, you (we) choose. I believe that all kinds of things influence our will and cause us to think or act in a particular way. We act in accordance with what we want and desire to a large extent. Since the Fall humanity all have a natural inclination and nature that in many ways is in rebellion to God. Thus we have not met His righteous standards (nor could we and the witness of OT Israel demonstrate this also) and God is just in judging us and on the flip-side merciful in allowing us to continue to do what is wrong and what we sometimes know is wrong or denying ignore Him (for a time but we all are eventually accountable to God either in our own acts or based on the merit and work of Another).
Now since we are rebellious to God it takes His grace and mercy to open our mind and heart to His Word and free us. That is why a Christian can speak with an atheist for years and all the time the atheist will just dig in his/her heals all the more. Two people can read His words and one can hear and believe the message yet another cannot. The atheist will become more and more belligerent towards His will and ways yet to the humble God will speak.
Now to the rest of your question in conjunction with hurricanes and "Acts of God."
There is or are purposes in Acts of God, as I stated before, most of which we do not know or understand. They bring judgment in one way or another in that they unite the dead with God or separate them from His presence. Not only this, such acts remind us of our frailty and lack of control in what happens to us. Even so, God does not force human beings to do evil, nor does He tempt them to do evil.
I think the Westminister Confession of Faith sums up our will in a number of points of which I leave you with.
The Westminster Confession of Faith Chapter 9: Of Free Will
Sec. 1. God hath endued the will of man with that natural liberty, that it is neither forced, nor, by any absolute necessity of nature, determined to good, or evil.
Sec. 2. Man, in his state of innocency, had freedom, and power to will and to do that which was good and well pleasing to God; but yet, mutably, so that he might fall from it.
Sec. 3. Man, by his fall into a state of sin, hath wholly lost all ability of will to any spiritual good accompanying salvation: so as, a natural man, being altogether averse from that good, and dead in sin, is not able, by his own strength, to convert himself, or to prepare himself thereunto.
Sec. 4. When God converts a sinner, and translates him into the state of grace, He freeth him from his natural bondage under sin; and, by His grace alone, enables him freely to will and to do that which is spiritually good; yet so, as that by reason of his remaining corruption, he doth not perfectly, nor only, will that which is good, but doth also will that which is evil.
Sec. 5. The will of man is made perfectly and immutably free to do good alone in the state of glory only.
Or are you perhaps a Calvinist?
More to the question is whether or not the five points are biblical teaching.