A three-point-nine magnitude earthquake struck central South Korean city of Sangju on Sunday but no damages or injuries have been reported.br The tremor is the third-strongest to hit the nation this year, but the strongest to have occurred inland.br The Korea Meteorological Administration said the quake occurred at eleven-oh-four AM and that it has classified the quake as a level four... which is usually strong enough to rattle windows.br Meanwhile, a 2-point-oh magnitude struck in waters off of the nation's southwestern city of Gunsan earlier this morning at one-fifteen AM, with no damages or injuries reported.