Unfortunately, radioactive fallout from the reactor leaks is going to hit the United States and Canada. Alaska, Hawaii and the west coast of the United States should prepare themselves for the invisible hazard that can rain down upon them within days or over the next weeks and months.
The wind paths will likely take the fallout to Alaska and Canada and the Northwestern coast of the United States first, but I expect we will see fallout in some small measure over most of the United States.
NOAA Near Realtime Current Ocean Current Flows