Note: There are Tsunami warnings for all of Hawaii, Guam and the ENTIRE PACIFIC COAST (and of course the various island nations), as a result of this 8.9 Magnitude Earthquake (the 7th largest recorded since the magnitude scale was invented). There are estimates that the tsunami could be as much as 5 to 10 meters in the islands. It's estimated that the wave could reach Hawaii around 8 Eastern Time. The tsunami will probably be only 3-5 feet on the west coast of the US & Canada, but that's just a guess. However, many of the island nations in the Pacific have highest points LOWER than the potential wave size in their area. Note that a 3-5 foot tsunami is capable of moving hundreds of feet inland, especially where there are river mouths or low-lying beaches. WA, OR and northern CA are more in the line of fire, due to the angle the wave is traveling (but it can wrap around). If you are or are supposed to be at elevations below 30 feet, get to higher ground.
Tokyo took damage from the Earthquake, despite being 240 miles away (as well as a 4 meter tsunami). Sendai was hit especially hard by the combination of quake and tsunami. There have been at least 12 major aftershocks, 7 of which were bigger than the NZ quake a few weeks ago.
Hotels in Hawaii are evacuating their guests to above the 4th or 5th floors as I type this, and they are closing all airports. Wake and Midway are being watched to see how they are going to be hit, to better predict what will happen to Hawaii and the west coast.
One of my earliest memories of the internet was logging on every day, hoping to hear from friends I'd made on the net in the Osaka area, after the Kobe quake. This brings back a lot of bad memories in that regard.