Korean Earthquake...

This morning at 4:30 am, there was an earthquake in Korea.  I have read that it was a 3.5 or 4.4 (differing accounts) earthquake.  So nothing major, but it did wake me up.  I did not think anything of it and just went back to bed, because I was not expecting an earthquake.  Did not think anything about it until my friend asked about it this morning.  Same thing happened with the two earthquakes in Indiana.   They were so small, that I woke up and thought nothing about them.  Oh well.