Imabari

Earthquakes near Imabari through history

From 1900 to October 19, 2026, USGS recorded 4 earthquakes of magnitude 6 or more within 100 km of Imabari, or 200 km for magnitude 7 and above. The strongest on either list was a magnitude 8.4, twice: on November 29, 684 and on October 28, 1707 (Nankaido).

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The last 30 days · as of

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

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What the record holds

The one on October 28, 1707 was the deadliest: NOAA records 5,000 deaths for it. NOAA’s list of significant earthquakes has 8 here, back to AD 684. NOAA records deaths in 10 of the events here, 9,684 in all. The latest on NOAA’s list is a magnitude 6.8 on March 24, 2001 (16 km SSW of Kure, Japan). NOAA’s record here begins on November 29, 684 with an earthquake. It grows thinner going back: 2 of the 8 significant earthquakes NOAA lists here are from 1927 on. NOAA lists one tsunami that began within 100 km of Imabari, and 10 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 28 m, on December 24, 1854. The deadliest here came on October 28, 1707 from a magnitude 8.4 earthquake (Nankaido): NOAA’s runup records count 1,704 deaths within 100 km of Imabari.

The events

  • March 24, 2001Earthquake · M 6.816 km SSW of Kure, Japan · 2 deaths (NOAA)USGS · NOAA NCEI
  • December 24, 1854Tsunami · 28 m hereNankaido · 377 deaths here (NOAA)NOAA NCEI · Wikipedia
  • October 28, 1707Earthquake · M 8.4 (est.)Nankaido · 5,000 deaths (NOAA)NOAA NCEI · Wikipedia
  • October 28, 1707Tsunami · 25.7 m hereNankaido · 1,704 deaths here (NOAA)NOAA NCEI · Wikipedia
  • November 29, 684Earthquake · M 8.4 (est.)NOAA NCEI · Wikipedia

Good to know

  • An event counts for Imabari 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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