Hiratsuka

Earthquakes near Hiratsuka through history

From 1900 to October 19, 2026, USGS recorded 31 earthquakes of magnitude 6 or more within 100 km of Hiratsuka, or 200 km for magnitude 7 and above. 6 of them reached magnitude 7 or more; the strongest on either list was an estimated magnitude 8.4 on October 28, 1707 (Enshunada).

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The last 30 days · as of

USGS recorded 3 earthquakes of magnitude 4.5 or more within 100 km of Hiratsuka in the last 30 days.

The latest: magnitude 4.5 on October 21 (2 km N of Honchō, Japan). The strongest: magnitude 4.9 on September 28 (5 km S of Sakai, Japan).

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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 45 here, back to AD 818. NOAA records deaths in 33 of the events here, 150,131 in all. The latest on NOAA’s list is a magnitude 7.9 on March 11, 2011 (Near E Coast Honshu). NOAA’s record here begins in August 818 with an earthquake (Tokkaido). It grows thinner going back: 16 of the 45 significant earthquakes NOAA lists here are from 1927 on. NOAA lists 19 tsunamis that began within 100 km of Hiratsuka, and 15 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 13 m, on September 1, 1923. The deadliest, on December 30, 1703, killed 1,496 people here by NOAA’s runup records. NOAA lists 10 significant eruptions of 3 volcanoes within 100 km of Hiratsuka. The largest was Fujisan on December 16, 1707, at 4 on the volcanic explosivity index.

The events

  • March 11, 2011Earthquake · M 7.9Near E Coast HonshuUSGS · NOAA NCEI · Wikipedia
  • September 1, 1923Earthquake · M 8.0Tokyo, Yokohama · 105,385 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
  • September 1, 1923Tsunami · 13 m hereSagami Bay · 344 deaths here (NOAA)NOAA NCEI · Wikipedia
  • December 16, 1707Eruption · VEI 4FujisanNOAA NCEI · Wikipedia
  • October 28, 1707Earthquake · M 8.4 (est.)Enshunada · 2,000 deaths (NOAA)NOAA NCEI · Wikipedia
  • December 30, 1703Tsunami · 10.5 m hereOff Sw Boso Peninsula · 1,496 deaths here (NOAA)NOAA NCEI · Wikipedia
  • September 20, 1498Earthquake · M 8.3 (est.)Enshunada Sea · 5,000 deaths (NOAA)NOAA NCEI
  • August 818Earthquake · M 7.9 (est.)TokkaidoNOAA NCEI

Good to know

  • An event counts for Hiratsuka 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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