Iizuka

Earthquakes near Iizuka through history

From 1900 to October 19, 2026, USGS recorded 11 earthquakes of magnitude 6 or more within 100 km of Iizuka, or 200 km for magnitude 7 and above. 4 of them reached magnitude 7 or more; the strongest was a magnitude 7.9, four times, most recently on November 2, 1931 (58 km ESE of Takanabe, Japan).

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The last 30 days · as of

USGS recorded no earthquake of magnitude 4.5 or more within 100 km of Iizuka in the last 30 days.

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What the record holds

The deadliest was not the strongest: an estimated magnitude 6.4 on May 21, 1792 (Kyusyu Island), for which NOAA records 15,030 deaths. NOAA’s list of significant earthquakes has 16 here, back to AD 744. NOAA records deaths in 26 of the events here, 21,441 in all. The latest on NOAA’s list is a magnitude 7 on April 15, 2016 (6 km ESE of Kumamoto, Japan). NOAA’s record here begins on June 30, 744 with a tsunami (Sw. Kyushu Island). It grows thinner going back: 7 of the 16 significant earthquakes NOAA lists here are from 1927 on. NOAA lists 2 tsunamis that began within 100 km of Iizuka, and 6 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 23.4 m, on May 21, 1792. The deadliest here came on June 30, 744 from a magnitude 6.4 earthquake (Sw. Kyushu Island): NOAA’s runup records count 1,520 deaths within 100 km of Iizuka. NOAA lists 16 significant eruptions of one volcano within 100 km of Iizuka. The largest was Asosan in December 1872, at 3 on the volcanic explosivity index. It killed 4 people by NOAA’s count.

The events

  • April 15, 2016Earthquake · M 7.06 km ESE of Kumamoto, Japan · 273 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
  • April 1, 1968Earthquake · M 7.560 km ESE of Nobeoka, Japan · one death (NOAA)USGS · NOAA NCEI · Wikipedia
  • November 2, 1931Earthquake · M 7.958 km ESE of Takanabe, Japan · one death (NOAA)USGS · NOAA NCEI
  • November 10, 1909Earthquake · M 7.518 km SE of Honmachi, JapanUSGS · NOAA NCEI
  • December 1872Eruption · VEI 3Asosan · 4 deaths (NOAA)NOAA NCEI · Wikipedia
  • May 21, 1792Earthquake · M 6.4 (est.)Kyusyu Island · 15,030 deaths (NOAA)NOAA NCEI
  • May 21, 1792Tsunami · 23.4 m hereShimabara Bay, Kyushu IslandNOAA NCEI · Wikipedia
  • June 16, 1026Earthquake · M 7.5 (est.)Off Masuda, Shimane Prefecture · 1,001 deaths (NOAA)NOAA NCEI · Wikipedia
  • June 30, 744TsunamiSw. Kyushu Island · 1,520 deaths here (NOAA)NOAA NCEI

Good to know

  • An event counts for Iizuka 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

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