Japan Jolted by Magnitude 6.8 Earthquake; No Serious Injuries Reported, No Tsunami Alert

Japan Meteorological Agency's director of earthquake and tsunami observation division Shinya Tsukada speaks during a press conference, after a 6.8-magnitude earthquake struck off country's northeastern coast, in Tokyo, on May 1, 2021. Str/Jiji Press/AFP via Getty Images

TOKYO—An earthquake with a magnitude of 6.8, revised up from an earlier estimate of 6.6, jolted northeast Japan on Saturday, shaking buildings 400 kilometers away in Tokyo and raising the possibility of landslides closer to the epicenter.

No tsunami alert was issued after the quake, which struck at 10:27 a.m. Japan time (0127 GMT) off the coast of Miyagi prefecture at a depth of 51 kilometers (32 miles), the Japan Meteorological Agency (JMA) said. The JMA earlier estimated its depth at 60 kilometers.