2011 Virginia earthquake
The USGS found that the farthest landslide from the 2011 Virginia earthquake was from the epicenter. This is by far the greatest landslide distance recorded from any other earthquake of similar magnitude. Previous studies of worldwide earthquakes indicated that landslides occurred no farther than from the epicenter of a magnitude 5.8 earthquake. The study suggested that the added information about East Coast earthquakes may prompt a revision of equations that predict ground shaking. "What makes this new study so unique is that it provides direct observational evidence from the largest earthquake to occur in more than 100 years in the eastern U.S. Now that we know more about the power of East Coast earthquakes, equations that predict ground shaking might need to be revised."
Walhalla, South Carolina
The town is built mostly on types of granite rock. It is also near some minor faults and therefore subject to small and infrequent earthquakes. The last nearby earthquake had its epicenter in Newry, South Carolina, and occurred at 7:42 am EDT on May 19, 1971. The earthquake had an intensity of VI ("Strong") in Newry as measured by the Mercalli intensity scale. The cause of the Newry quake was likely a slippage of the Brevard Fault and other faults in the area aided by the immense weight of the man-made Lake Keowee, created by the Keowee Dam.