The earthquake occurred on Tuesday, August 16, 2005, and affected Japan's northeastern coast.

It was initially estimated to have a moment magnitude of 6.8, and the United States Geological Survey later declared it as a 7.2.

[1] A tsunami advisory was issued by the Japan Meteorological Agency, but was lifted after only two small waves several centimeters high hit the coast.

[3] Some injuries were due to a pool roof collapse in Sendai city, Miyagi prefecture.

Such technology has since become much more popular and this quake is credited for that, since it was 60 miles off the coast of Japan and there was time for a warning.