Earthquakes near Ichinoseki, 1927–2026

It was also the deadliest: NOAA records 18,423 deaths for it. 27 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records deaths in 11 of the events here, 18,921 in all. The ten years with the most magnitude 6+ earthquakes were 2007–2016, with 13 of the 51. The latest on NOAA’s list is a magnitude 7.3 on March 16, 2022 (57 km ENE of Namie, Japan). NOAA lists 3 tsunamis that began within 100 km of Ichinoseki, and 12 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 55.88 m, on March 11, 2011. The deadliest here came on March 11, 2011 from a magnitude 9.1 earthquake (Honshu Island): NOAA’s runup records count 12,675 deaths within 100 km of Ichinoseki. NOAA lists one significant eruption of one volcano within 100 km of Ichinoseki. The deadliest was Naruko on August 26, 1969, which killed one person by NOAA’s count.

• March 16, 2022Earthquake · M 7.357 km ENE of Namie, Japan · 4 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• March 11, 2011Earthquake · M 9.12011 Great Tohoku Earthquake, Japan · 18,423 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• March 11, 2011Tsunami · 55.88 m hereHonshu Island · 12,675 deaths here (NOAA)NOAA NCEI · Wikipedia
• August 26, 1969EruptionNaruko · one death (NOAA)NOAA NCEI · Wikipedia
• November 6, 1938Earthquake · M 7.7116 km E of Namie, JapanUSGS · NOAA NCEI

• An event counts for Ichinoseki 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 here start at magnitude 6: the catalogue’s smaller quakes thin out going back, where few instruments listened.
• 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