Has anyone heard of the Northside Booms in Richmond? I heard one today. I suspect that they are happening underground. What do you think?

By the way, sonic booms, earthquakes, construction, car accidents, real explosions, gas explosions, and alien invasion have been ruled out.

I just moved here and already had my house flooded by Gaston and now the infamous "booms." I'm over it, I am almost ready to pack it up! Just Kiddin' But seriously, they are no joke, I have a huge house and it feels like something hits it and then there's a slow rumble. I'm not really scared at all, just alittle curious. They arrested some teenage brats in the area for making "pressure devices" but the booms still continue, but not as frequently.
Here's a the latest link about this mess:
http://www.wwbt.com/servlet/Satellit...=1031779539008
I hope they figure out what is causing our latest round of the lovely "Northside Booms."
Take care,
Ang