Earthquakes in South Korea, 2017–2026

2 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records no deaths for any of them. The latest on NOAA’s list is a magnitude 4.4 on June 11, 2024 (Jeonbuk).

• June 11, 2024Earthquake · M 4.4JeonbukNOAA NCEI
• December 14, 2021Earthquake · M 4.6South KoreaUSGS
• August 21, 2021Earthquake · M 4.6163 km NW of Sinan, South KoreaUSGS
• February 10, 2018Earthquake · M 4.75 km SW of Heunghae, South KoreaUSGS
• November 15, 2017Earthquake · M 5.57 km SW of Heunghae, South KoreaUSGS · NOAA NCEI · Wikipedia
• November 15, 2017Earthquake · M 4.74 km WNW of Pohang, South KoreaUSGS

• An event counts for South Korea when it began inside its borders, or at sea within 100 km of its coast (so one can count for two neighbours), or further out, up to 300 km, where South Korea is the nearest country.
• USGS counts are its ComCat catalogue’s earthquakes of magnitude 4.5 or more, aftershocks included.
• NOAA lists significant events only: earthquakes that killed, did about $1 million of damage, reached magnitude 7.5 or intensity X, or raised a tsunami, and eruptions and tsunamis by like measures. Magnitudes before 1900 are its estimates from written accounts.
• Deaths are NOAA’s total for each event, wherever people died, its tsunami and fires included. A tsunami counts the dead its runup records give for this place: NOAA’s total for a tsunami includes its source quake’s.
• A tsunami from elsewhere counts where one of its runups killed or rose a metre or more.
• The map frames the box around South Korea, its neighbours’ quakes included, so its count runs higher than this page’s.
• Counted to October 19, 2026, as is the map. The last 30 days ask USGS again.

How the layers work, where their data comes from and what they can’t tell you: Earthquakes, live, The world through history