Narita

Earthquakes near Narita, 1927–2026

From 1927 to October 19, 2026, USGS recorded 42 earthquakes of magnitude 6 or more within 100 km of Narita, or 200 km for magnitude 7 and above. 8 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 5 earthquakes of magnitude 4.5 or more within 100 km of Narita in the last 30 days.

The latest: magnitude 4.7 on October 11 (6 km ESE of Tōgane, Japan). The strongest: magnitude 5.3 on October 1 (0 km NNE of Yōkaichiba, Japan).

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What the record holds

The deadliest was not the strongest: a magnitude 6.5 on September 21, 1931 (1 km WNW of Kumagaya, Japan), for which NOAA records 16 deaths. 14 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records deaths in 5 of the events here, 51 in all. NOAA lists 6 tsunamis from elsewhere that reached the coast within 100 km of Narita with deaths or a metre of water or more. The highest water NOAA records here was 10.1 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 44 deaths within 100 km of Narita.

The events

  • March 11, 2011Earthquake · M 7.9Near E Coast HonshuUSGS · NOAA NCEI · Wikipedia
  • March 11, 2011Tsunami · 10.1 m hereHonshu Island · 44 deaths here (NOAA)NOAA NCEI · Wikipedia
  • May 23, 1938Earthquake · M 7.769 km ESE of Kitaibaraki, JapanUSGS
  • September 21, 1931Earthquake · M 6.51 km WNW of Kumagaya, Japan · 16 deaths (NOAA)USGS · NOAA NCEI

Good to know

  • An event counts for Narita 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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