earthquake last night around 10:30 or so ?

Yes, I felt it too, not as bad as the other one though...I think this one was a 4,9! Just got into bed.
I looked it up and it seems like today only we had 19 little earthquakes in the Virgin Island regions, some over 4.0!
Are we building something here? There is this one spot north of us where it all seem to happen.
http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/PR10/13.23.-71.-61.php

YES, I sure felt it. I had just gotten into bed and the bed RUMBLED, the room rumbled...
Thanks for the link, I'll bookmark it to check it out.

Where is north of you ? We're on the north side... HIGH up here.

Have earthquakes been very common? I was there back in the mid '90's and don't recall even hearing of them once.

Chana

Yes, they've always been common here. Some weeks there won't be many; some days there may be 50 or more small quakes.

From what I've seen, most are in the 2.5-3.5 range (smaller than 2.5 are not reported on the USGS website). It's very hard to feel quakes that small. Even up to the 4.0 and slightly higher range it typically just feels like a truck is idling nearby. For 3.5's and smaller, an idling concrete truck down my hill causes stronger vibrations than the small quake. In other words, they are hard to distinguish from man-made vibrations.

I don't know how long the USGS site has been up, but perhaps in the mid 90's that site wasn't around. It is much easier now to be aware of seismic activity. It's an interesting site. Check it out. The real hotspot in the US is Alaska. The second post in this thread has the website link. The site lists all quakes 2.5 and greater in the US and 4.0 and greater in the rest of the world. I guess if they posted all of the smaller quakes for the rest of the world the daily list would be huge.

Here is the website page that lists all earthquakes in the last 7 days: http://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/quakes_all.php

There was a 5.0 last year that I definitely felt. It built over a half a minute or so and caused things to rattle and sway-- but only a little bit. I did not hear of any damage from that one although I suspect that such seismic activity might cause cracks in cisterns.

I'm not too concerned about the seismic activity, but if I feel one that is stronger than the rumbling of an idling truck I do move to an area of my home that is well-reinforced in case it builds into a big one.