An earthquake with a magnitude of 5.2 jolted 27 km NNW of Balbalan, Philippines at 08:19:27 GMT on Monday, the U.S. Geological Survey said.The epicenter, with a depth of 0.0 km, was initially determined to be at 17.6679 degrees north latitude and 121.0941 degrees east longitude.An earthquake with a magnitude of 5.2 jolted 27 km NNW of Balbalan, Philippines at 08:19:27 GMT on Monday, the U.S. Geological Survey said.The epicenter, with a depth of 0.0 km, was initially determined to be at 17.6679 degrees north latitude and 121.0941 degrees east longitude.