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  1. 2021 Fukushima earthquake - Wikipedia

    • This earthquake generated massive tsunamis measuring up to 41 meters in height, the highest in Japan. [18] It swept through the Kantō Plain, destroying towns and cities. The tsunami also caused a series of catastrophic nuclear meltdowns at the Fukushima Daiichi Nuclear Power Plant shortly after. In all, an estimated 20,000 people lost their ...… See more

    Overview

    An intense and deadly seismic event struck offshore east of Tōhoku, Japan. The MJMA  7.3 or Mw  7.1 earthquake … See more

    Background

    The 11 March 2011 Tōhoku earthquake struck off the coast of eastern Japan, with an epicenter north of Sendai, and a hypocenter depth of 29 km. It was the largest instrumentally recorded earthquake in the count… See more

    UTC time2021-02-13 14:07:49
    ISC event619834062
    USGS-ANSSComCat
    Local date13 February 2021
    Tectonic setting

    The Pacific plate, made of oceanic lithosphere, subducts beneath the Okhotsk Sea plate along a convergent boundary located off the east coast of the northern half of Japan. It runs from the Boso triple junction and … See more

    Earthquake

    The earthquake occurred as the result of reverse faulting within the subducting Pacific plate; not on the subduction interface itself. Hence, it could be considered an intraplate earthquake. Moment te… See more

    Foreshocks and aftershocks

    Nine days after the 10th anniversary of the March 2011 tragedy, a strong 7.0 Mw  or 6.9 MJMA  earthquake struck 80 km north of the epicenter of the February 2021 event. The earthquake struck at 18:09 local time, 54 km (34 mi) … See more

    Earthquake and tsunami warnings

    The Japan Meteorological Agency issued an Earthquake Early Warning at 23:08:10.2 or 10 seconds after the earthquake was detected, in all of Miyagi and Fukushima prefecture, the Murayama and Oki districts in Yamagat… See more

    Tsunami

    Because of the earthquake's focal depth and size, no formal warning was issued to the Japanese coast. Seven minutes after the earthquake, the Japan Meteorological Agency projected "slight sea level fluctuation" … See more

     
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