How far away from the epicenter could the vibrations be felt from the 2008 Sichuan Earthquake?
http://sergiu.turcanu.net/wp-content/uploads/sichuan-earthquake-map.jpg –quote– On Monday May 12, 2008, an earthquake measuring 7.9 on the Richter scale struck the Chinese province of Sichuan. The epicenter was in Wenchuan County, 80 km (50 mi) west-northwest of Chengdu, the capital of Sichuan. There is widespread destruction in Sichuan and nearby provinces. The earthquake was felt as far away as Beijing (1,500 km away) and Shanghai (1,700 km away).