Uploaded on April 21, 2026

Event Event time: 2026-04-20 16:53 (JST, JMA) Location: 39.8°N, 143.2°E (JMA) Depth: 10 km (JMA) Magnitude: Mj7.7 (JMA)

Information in our site

• Tsunami Simulation - Iwate Earthquake on Apr. 20, 2026 by Dr. Fujii (uploaded on April 21)

Direct links

• M 7.4 - 100 km ENE of Miyako, Japan

Related institutions

• United States Geological Survey (USGS), USA

The Generic Mapping Tools (GMT, Wessel and Smith, Eos, 79, 579, 1998) was used to make the figure of the epicenter, which is from JMA (https://www.data.jma.go.jp/multi/quake/quake_detail.html?eventID=20260420172425&lang=jp). The land topography and ocean bathymetry are from GEBCO Compilation Group (2020, GEBCO 2020 Grid, doi:10.5285/a29c5465-b138-234d-e053-6c86abc040b9).

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