Just moments ago we reported on the 6.3 magnitude earthquake which rocked Japan earlier this hour. Just a few minutes ago the USGS issued several tsunami warnings for the region. The epicenter of the earthquake was in the water between Taiwan, and Okinawa, Japan. Wave heights should not be catastrophic, however, they will be approximately 0.5 meters high.
The warnings seems more like cautionary ones than anything else, but if you are in that region, you may want to be on guard.