Adam: Insurers consider all natural events such as hurricanes, tsunamis, earthquakes, etc as "acts of God".
That's irrelevant from a doctrinal point of view, don't you think? The question asked was about the 2004 Tsunami. My answer is: Since Christ was resurrected, God stepped aside from interveining in human affairs, and instituting an automatic mechanism towards salvation based on the faith in Christ. Thus he didn't cause, nor would he intervein to forewarn or prevent that Tsunami. He merely offers hope and assure us of salvation, if we should accept it.
Eden