Obihiro

Earthquakes near Obihiro through history

From 1900 to October 19, 2026, USGS recorded 24 earthquakes of magnitude 6 or more within 100 km of Obihiro, or 200 km for magnitude 7 and above. 10 of them reached magnitude 7 or more; the strongest was a magnitude 8.2 on September 25, 2003 (2003 Tokachi-Oki Earthquake).

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The last 30 days · as of

USGS recorded one earthquake of magnitude 4.5 or more within 100 km of Obihiro in the last 30 days.

The latest: magnitude 4.5 on October 12 (53 km S of Kushiro, Japan).

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What the record holds

The deadliest was not the strongest: a magnitude 8.1 on March 4, 1952 (1952 Tokachi-Oki Earthquake), for which NOAA records 33 deaths. NOAA’s list of significant earthquakes has 11 here, back to 1839. NOAA records deaths in 7 of the events here, 190 in all. The latest on NOAA’s list is a magnitude 7 on November 28, 2004 (51 km SW of Nemuro, Japan). NOAA’s record here begins on May 1, 1839 with an earthquake. It grows thinner going back: 9 of the 11 significant earthquakes NOAA lists here are from 1927 on. NOAA lists one tsunami that began within 100 km of Obihiro, and 11 from elsewhere that reached it with deaths or a metre of water or more. The highest water NOAA records here was 6.29 m, on March 11, 2011. The deadliest here came on September 25, 2003 from a magnitude 8.3 earthquake (Hokkaido Island): NOAA’s runup records count 2 deaths within 100 km of Obihiro. NOAA lists 5 significant eruptions of 2 volcanoes within 100 km of Obihiro. The largest was Tokachidake on May 24, 1926, at 3 on the volcanic explosivity index. It killed 144 people by NOAA’s count.

The events

  • March 11, 2011Tsunami · 6.29 m hereHonshu IslandNOAA NCEI · Wikipedia
  • November 28, 2004Earthquake · M 7.051 km SW of Nemuro, JapanUSGS · NOAA NCEI
  • September 25, 2003Earthquake · M 8.22003 Tokachi-Oki Earthquake · 2 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
  • September 25, 2003Tsunami · 4.1 m hereHokkaido Island · 2 deaths here (NOAA)NOAA NCEI · Wikipedia
  • March 4, 1952Earthquake · M 8.11952 Tokachi-Oki Earthquake · 33 deaths (NOAA)USGS · NOAA NCEI
  • May 24, 1926Eruption · VEI 3Tokachidake · 144 deaths (NOAA)NOAA NCEI · Wikipedia
  • May 1, 1839Earthquake · M 7.3 (est.)NOAA NCEI

Good to know

  • An event counts for Obihiro 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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