EARTHQUAKE!!!!

I just officially experienced my first Japanese earthquake tonight.

Except, it wasn't all that exciting. Literally a milisecond before the shaking started, I heard a loud boom from the apt above me, so I figured my obnoxious (more to come on that another time) neighbor dropped something ridiculously heavy. BUT when my friend who lives across town messaged me and said his entire apt building was shaking, I realized it was an actual earthquake. Obviously because of above explanation, it wasn't very big. More like an aftershock...but that makes me wonder if a) a bigger one is coming? or b) There was a big one and we just got the end ripple of it. Guess I'll have to wait for the news tomorrow...