Earthquakes are pretty common in Japan. Here are some recent screen shots of earthquakes in my area from the Japan Meteorological Agency website. The earthquakes are stronger in other areas closer to the epicenter (the red X), but I notice the smaller quakes here where I live. When I ask my students if they felt the earthquake of the day before or of this week, it is no big deal to them. I guess living their whole lives with earthquakes, these small ones don't even register to them. You never know when a really big one will come, though.
JMA is a great website for earthquakes, typhoons, volcanic eruptions, all kinds of interesting things. Do you have earthquakes where you live?