Magnitude 6.9 quake hits off western coast of Mexico - USGS 21.01.2016 21:28 Reuters WASHINGTON (Reuters) - An magnitude 6.9 earthquake hit off the western coast of Mexico on Thursday, about 6.2 miles deep (10 km) and 165 miles (266 km) west of Cihuatlan, Jalisco, Mexico, the U.S. Geological Service said.