A 5.4 magnitude earthquake struck close to the city of Pohang on the southeastern coastline of South Korea around 2:29 p.m. local time, Yonhap News Agency reported.
The tremors were felt as far as the South Korean capital Seoul some 170 miles away.
Residents in Pohang city, that is just 5.6 miles from the epicenter of the quake, were told to evacuate.
Reports of shaking buildings and toppling furniture from Seoul to Jeju Island flooded social media.
Today 14:29(korea time) South Korea M5.4 Earthquake. pic.twitter.com/9n7VtoSnEz
— Robert Kincaid (@codihong) November 15, 2017
Earthquake in Pohang, South Korea right now pic.twitter.com/yD4cgNC3dR
— DKDKTV (@dkdktv92) November 15, 2017
지금 학교 기숙사랑 계단 상태임 ㅅㅂㅋㄱㅋㄱㅋㄱㅋㄱㅋㄱㅋ pic.twitter.com/JXYrcYFtTL
— [Zl존]원woo (@166_167) November 15, 2017
So far, there have been no reports of human casualties.
South Korean officials are assessing the situation.
There are nuclear power plants and industrial facilities in the area. No damage to them has been reported.