Powerful Quake Strikes off the Coast of Japan
A strong earthquake struck northern Japan on Sunday evening, shaking the region and triggering a tsunami advisory that remained in effect for three hours before being lifted, according to the Japan Meteorological Agency.
Details of the Earthquake
The quake, with a revised magnitude of 6.9 and a depth of 16 kilometers (10 miles), occurred off the coast of Iwate Prefecture at 5:03 p.m. It was followed by several aftershocks throughout the evening.
Tsunami Advisory and Observations
The agency issued an advisory warning that waves up to 1 meter (3 feet) could affect the northern coastline, later noting that in some areas water levels might reach about 3 meters. Actual recorded tsunami waves measured around 10 centimeters (4 inches) in Ofunato, Ominato Port, Miyako, and Kamaishi, rising to about 20 centimeters (8 inches) near Kuji.
During the advisory, authorities cautioned residents to avoid the ocean and coastal zones and remain alert for additional tremors.
Damage and Safety Reports
As of the latest updates, there were no immediate reports of injuries, structural damage, or irregularities at the two nuclear power plants located in the region. Experts reminded that tsunami activity sometimes continues for hours, with wave intensity fluctuating over time.
Author’s Summary
A 6.9-magnitude earthquake struck off Japan’s Iwate coast, prompting brief tsunami warnings but leaving no reported injuries or damage after waves reached modest heights.