Nasushiobara

Earthquakes near Nasushiobara, 1927–2026

From 1927 to October 19, 2026, USGS recorded 20 earthquakes of magnitude 6 or more within 100 km of Nasushiobara, or 200 km for magnitude 7 and above. 14 of them reached magnitude 7 or more; the strongest was a magnitude 7.9 on March 11, 2011 (Near E Coast Honshu).

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The last 30 days · as of

USGS recorded 2 earthquakes of magnitude 4.5 or more within 100 km of Nasushiobara in the last 30 days.

The latest: magnitude 4.6 on October 7 (9 km NNE of Midori, Japan).

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What the record holds

The deadliest was not the strongest: a magnitude 7.3 on March 16, 2022 (57 km ENE of Namie, Japan), for which NOAA records 4 deaths. 16 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records deaths in 10 of the events here, 1,207 in all. The ten years with the most magnitude 6+ earthquakes were 1937–1946, with 5 of the 20. NOAA lists 6 tsunamis from elsewhere that reached the coast within 100 km of Nasushiobara with deaths or a metre of water or more. The highest water NOAA records here was 21.1 m, on March 11, 2011. The deadliest here came on March 11, 2011 from a magnitude 9.1 earthquake (Honshu Island): NOAA’s runup records count 450 deaths within 100 km of Nasushiobara. NOAA lists 3 significant eruptions of 3 volcanoes within 100 km of Nasushiobara. The deadliest was Akagisan on September 16, 1947, which killed 699 people by NOAA’s count.

The events

Good to know

  • An event counts for Nasushiobara 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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