Earthquakes near Nagasaki, 2017–2026

The deadliest was not the strongest: a magnitude 6.8 on July 28, 2026 (The 2026 Kumamoto Region, Japan Earthquake), for which NOAA records 38 deaths. 2 earthquakes here in these years are on NOAA’s list of significant earthquakes. 2026 had the most magnitude 4.5+ earthquakes: 16 of the 31. 15 came in the 30 days after a magnitude 6.8 on July 28, 2026 (The 2026 Kumamoto Region, Japan Earthquake), within 150 km of it. NOAA lists one tsunami that began within 100 km of Nagasaki. The highest water NOAA records here was 2.9 m, on March 20, 2019.

• July 28, 2026Earthquake · M 6.8The 2026 Kumamoto Region, Japan Earthquake · 38 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• August 8, 2024Earthquake · M 7.12024 Hyuganada Sea, Japan EarthquakeUSGS · NOAA NCEI · Wikipedia
• March 20, 2019Tsunami · 2.9 m hereNagasaki, JapanNOAA NCEI

• An event counts for Nagasaki when it began within 100 km of its centre, or 200 km for an earthquake of magnitude 7 or more. Damage can reach further.
• 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.
• 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