Toyohashi

Earthquakes near Toyohashi through history

From 1900 to October 19, 2026, USGS recorded 15 earthquakes of magnitude 6 or more within 100 km of Toyohashi, or 200 km for magnitude 7 and above. 8 of them reached magnitude 7 or more; the strongest on either list was a magnitude 8.4, three times, most recently on October 27, 1891 (Mino-Owari).

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The last 30 days · as of

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

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What the record holds

The deadliest was not the strongest: a magnitude 8 on September 1, 1923 (Tokyo, Yokohama), for which NOAA records 105,385 deaths. NOAA’s list of significant earthquakes has 38 here, back to AD 704. NOAA records deaths in 18 of the events here, 157,073 in all. The latest on NOAA’s list is a magnitude 6.2 on August 10, 2009 (8 km NE of Sagara, Japan). NOAA’s record here begins on August 2, 704 with an earthquake (Kumanonada). 32 of the 38 significant earthquakes NOAA lists here came before 1927. NOAA lists 14 tsunamis that began within 100 km of Toyohashi, and 9 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 21 m, on December 23, 1854. The deadliest here came on September 20, 1498 from a magnitude 8.3 earthquake (Enshunada Sea): NOAA’s runup records count 31,000 deaths within 100 km of Toyohashi.

The events

  • August 10, 2009Earthquake · M 6.28 km NE of Sagara, Japan · one death (NOAA)USGS · NOAA NCEI · Wikipedia
  • September 1, 1923Earthquake · M 8.0Tokyo, Yokohama · 105,385 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
  • October 27, 1891Earthquake · M 8.4 (est.)Mino-Owari · 7,273 deaths (NOAA)NOAA NCEI · Wikipedia
  • December 23, 1854Tsunami · 21 m hereEnshunada Sea · 143 deaths here (NOAA)NOAA NCEI · Wikipedia
  • October 28, 1707Earthquake · M 8.4 (est.)Enshunada · 2,000 deaths (NOAA)NOAA NCEI · Wikipedia
  • September 20, 1498Tsunami · 10 m hereEnshunada Sea · 31,000 deaths here (NOAA)NOAA NCEI
  • December 17, 1096Earthquake · M 8.4 (est.)Enshunada · 400 deaths (NOAA)NOAA NCEI
  • August 2, 704Earthquake · M 7.0 (est.)KumanonadaNOAA NCEI

Good to know

  • An event counts for Toyohashi 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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