6.7-magnitude earthquake hits Japan coast, no tsunami threat

A strong earthquake struck off eastern Honshu on Friday evening, triggering alerts and briefly disrupting rail services in Tohoku. Authorities ruled out a tsunami and began inspections as residents were warned about possible aftershocks.

In Short

• USGS said the quake measured 6.7 near Ofunato in Iwate Prefecture
• Japan's meteorological agency logged magnitude 6.3 with strong shaking in Miyagi
• JR East halted Tohoku Shinkansen services between Tokyo and Shin-Aomori

A strong earthquake struck off the eastern coast of Japan’s main island of Honshu on Friday evening, briefly disrupting train services and prompting emergency alerts across parts of the Tohoku region. Authorities, however, said there was no tsunami threat and no immediate reports of casualties or major damage.

According to the United States Geological Survey (USGS), the earthquake measured 6.7 in magnitude and occurred off the coast near Ofunato in Iwate Prefecture. The epicentre was located around 49 kilometres east-southeast of the city at a shallow depth. The tremor struck at 8:22 pm local time (4:52 pm IST).

Japan’s Meteorological Agency separately recorded the quake at magnitude 6.3 on the country’s seismic intensity scale. Strong shaking measuring lower 5 intensity was reported in several cities in Miyagi Prefecture, including Tome, Osaki and Ishinomaki, while many parts of Miyagi and neighbouring Iwate registered intensity 4 tremors.

Emergency earthquake warnings were issued shortly after the quake, but authorities later confirmed that there was no danger of a tsunami. Officials urged residents to remain calm and stay alert for possible aftershocks.

The earthquake also caused temporary disruptions to transportation services. East Japan Railway Company (JR East) suspended operations on the Tohoku Shinkansen line between Tokyo and Shin-Aomori as a precautionary measure. Services were later gradually restored, though some Yamagata Shinkansen routes remained suspended for inspection.

There were no immediate reports of injuries, structural damage or power outages. Authorities said inspections were being carried out across affected regions.

The latest tremor is among the strongest to hit the Tohoku region in recent weeks. On April 20, a magnitude 7.7 earthquake struck the same broader region, prompting tsunami alerts and a rare advisory warning of heightened seismic activity. Several smaller quakes have also been recorded along the eastern coast of Honshu this month, including magnitudes 5.0 and 4.7.

Japan sits along the Pacific Ring of Fire, one of the world’s most seismically active zones, and experiences frequent earthquakes due to the movement of tectonic plates beneath the region. Authorities continue to closely monitor seismic activity following Friday’s quake.

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