Major M7.4 earthquake hits near east coast of Honshu, Japan, tsunami waves observed along Tohoku coast

A major earthquake registered by the USGS as M7.4 struck near the east coast of Honshu, Japan, at 07:53 UTC (16:53 local time) on April 20, 2026. The agency is reporting a depth of 35 km (21.7 miles). JMA and EMSC are reporting M7.4 at a depth of 10 km (6 miles). According to the Pacific Tsunami Warning Center (PTWC), hazardous tsunami waves are possible within 300 km (186 miles) of the epicenter. Source