When I first looked at this thread and read the comments about slight tremors, I thought I must have dreamed last night. But then I found the posts of XR, Chris and other North Coasters.
I have experienced a lot of tremors, but nothing like this. Woke up to feel my bed shaking violently while moving across the floor and hearing the crashing of objects hitting the floor.
See no evidence of damage in our apartment, other than all the stuff we swept up last night, but looking down at the heavy concrete wall/railing in front of the building, I see several very large cracks and hunks of concrete lying on the ground.
I live on the 2nd floor. A friend who lives on the third floor tells me there was much more damage in her apartment from objects being thrown to the floor.