[Chaos-l] Observing tonight?

[Tony Rice]

State Geologist in NC is reporting that the quake was centered at a
thrust fault at the juncture between the  Blue Ridge and Piedmont
mountain ranges.

We definitely felt it in RTP, I'm on the 3rd floor and saw side to
side swaying that I remember well from growing up north of Los
Angeles.

Details on this quake from the USGS:
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usc0005ild.html

Here's some background:
We are in the middle of the North American plate which is normally
pretty stable but today's quake was centered just north of the Central
Virginia Seismic Zone .
http://www.virginiaplaces.org/geology/quake.html
http://geohazards.usgs.gov/cfusion/qfault/qf_web_ims.cfm?qfault_id=2653

History of earthquakes in mid-atlantic (from my Alma Mater):
http://www.geol.vt.edu/outreach/vtso/quake.html