On 20 April 2026 at 16:53 JST, a MJMA 7.7 earthquake struck off the Sanriku Coast of Honshu, Japan, along the Japan Trench. The earthquake caused strong shaking in Iwate and Aomori, with a maximum intensity of 5-upper (5+) on the Japan Meteorological Agency seismic intensity scale, recorded in Hashikami, Aomori. Additionally, it generated long-period ground motion of class 3 in southern Akita and northern Miyagi prefectures. Magnitude 7.4 (mww), 25 km deep, 102 km ENE of Miyako, Japan — 39.97°N, 143.06°E. April 20, 2026 at 07:52 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. Felt reports to USGS: 136. Wiki link https://earthquake.usgs.gov/earthquakes/eventpage/us6000sri7 Data: US Geological Survey (public domain).