Insurance companies call destructive floods, tornadoes, fires and hailstorms "Acts of God". I have not heard anyone claiming that the storm was a result of God judging New York or America. It has almost become commonplace for such claims whenever there is a large catastrophe. The Bible records times where God removes His hand of protection and a family, city or nation is devastated by a natural calamity.
Can we always correlate weather related disasters as a judging act of God?
Luke 5:45b (NIV)
...He causes His sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous.
Pray for those families who have lost a loved one and pray for those affected by the storm to place their hope in the Lord.