Ah, I remember the feeling well. Here in California we have earthquakes every year or so. Our "Big One" in Northern California was in October 1989 - about the same magnatude. It was frightening, to say the least. Property loss, lives lost, and some damage is still being worked on.
I hope you all can put it behind you quickly. Keep your emergency pack up-to-date (you do this for hurricanes anyway). It's good news that the Tsunami watch has been lifted.
This might be a story you tell for years to come to friends (it obviously is for me).