Monday, April 20, 2026

Japan on high alert for 'huge' second quake after issuing tsunami warning


Japan on high alert for large second quake after earthquake triggers tsunami warnings
Maia Davies

Japan remains on high alert for aftershocks after its meteorological agency warned of an increased risk of a large earthquake - measuring 8.0 or higher - in the next week. 

It comes after thousands of people were urged to seek higher ground in the earthquake-prone country on Monday after a 7.7 magnitude quake struck off its north-east coast.

The undersea activity off the Iwate prefecture triggered a string of tsunami warnings in the region and tremors as far away as the capital Tokyo, some 530km (330 miles) south.

One resident said “everyone ran” after the earthquake alert sounded.

The tsunami warnings were soon downgraded to advisories - the lowest level - but people are still warned to remain away from the coast. 

Waves reached heights of 80cm and no injuries or major damage were immediately reported.

The UN’s nuclear watchdog said it had been informed by Japanese officials that no abnormalities occurred at the country’s nuclear facilities. 

We're ending our live coverage here, but you can read more in our news story.

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