Massive 7.6-Magnitude Earthquake Strikes Northern Japan, Tsunami Waves Recorded

A powerful 7.6-magnitude earthquake struck off the coast of northern Japan late Monday night, prompting tsunami warnings and evacuation orders across parts of Honshu and Hokkaido as waves were observed along the eastern shoreline.

By yourNEWS Media Newsroom

The United States Geological Survey (USGS) reported that the quake hit around 11:15 p.m. local time, with an epicenter roughly 45 miles west of Misawa and a depth of about 33 miles beneath the Pacific Ocean floor. The strong undersea tremor was followed 15 minutes later by a magnitude 5.5 aftershock, also detected off Japan’s northeastern coast.

Japan’s Meteorological Agency (JMA) issued tsunami warnings and advisories for several coastal prefectures, forecasting waves of up to 9 feet (3 meters) in areas nearest the epicenter. Initial observations recorded tsunami heights of 1.3 feet and 1.6 feet as the waves reached shore.

Authorities in Aomori, Iwate, and parts of Fukushima Prefecture—home to the 2011 earthquake-triggered Fukushima Daiichi nuclear disaster—ordered precautionary coastal evacuations.

Prime Minister Sanae Takaichi’s government activated Japan’s emergency disaster response headquarters to coordinate local and national relief efforts, with no immediate reports of casualties or significant damage as of early Tuesday morning.

Transportation authorities suspended operations on at least one of Japan’s high-speed rail lines following the quake, citing the need for structural inspections.

The Pacific Tsunami Warning Center confirmed there was no tsunami threat to Hawaii, while the National Weather Service office in Guam said there was no danger to Guam or the Mariana Islands, located roughly 1,500 miles southeast of Japan.

Seismic experts say the quake occurred along one of the most active subduction zones on Earth, where the Pacific Plate dives beneath the North American Plate—a region that has produced several of Japan’s largest and most destructive earthquakes in recorded history.

Officials are urging residents along the Tohoku and Hokkaido coastlines to remain alert for aftershocks and secondary tsunami waves overnight as monitoring continues.