It was 30 seconds that millions of people along the East Coast will never forget, as a historic 5.8 magnitude earthquake that shook the ground from the Carolinas to Canada.
The epicenter was located right in the heart of Louisa County. The damage is still evident more than two years later on some of the country's most recognizable landmarks including Washington monument and the National Cathedral in Washington, DC.
Since then there've been more than 100 aftershocks, the latest less than two weeks ago.
Tonight, Chief Meteorologist Zach Daniel takes a look at the science behind the earthquake, who's still rebuilding, and explains how it could easily happen again.
Click on the video to watch.