Yep, that was an earthquake, 5.8 in Virginia, felt in Cambridge

[darxus]

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/at00lqe6x3.php

Comments

Current revision to 5.9

[drwex]

It was really interesting watching the Google+ stream light up.

[temalyen.livejournal.com]

Really? In Cambridge? It was barely noticeable here, I'd think it's be practically non-existent much further north of Philly. I did hear reports of it being felt as far away as Detroit, but I was assuming they meant it was picked up on instruments and not really felt by people. Maybe I was wrong.