Found some good information on the NOAA website called Tsunamis: The Great Waves. Most governments assume tsunamis are a Pacific Ocean problem. India and some other Indian Ocean countries didn’t have any warning network set up.
I wonder if such a network exists for the Atlantic. The Atlantic is fairly quiet of seismic activity, but then again, that’s what was said about the Indian Ocean before Sunday. If one of those large rocks came calling from space, Sunday’s tsunami would seem like a ripple.
On another note, here’s a nice website which details relief efforts underway.