So back on topic. Growing up in Hawaii, I lived through about 3 Tsunami warnings, and a few Hurricane warnings (only one of which actually hit the islands, Iniki). I seem to recall that most Tsunamis actually lose so much energy traveling, that by the time it actually hits, its nothing more then a high surf advisory. The few cases in Hawaii history I recall that a Tsunami did cause massive damage/death was when it was an earthquake in Cali or Alaska, which I think are closer then Chile. So probably won't see much from this bugger.
Interesting Note: The one from Alaska occurred on April 1st, and caused a lot of deaths due to people thinking it was an April Fools Day joke. Kinda sad, but I would NEVER think a Federal Warning is EVER a joke.