The Japan Meteorological Agency has upped the risk of a megaquake to 1 per cent, compared to 0.1 per cent at other times.

A 7.5-magnitude earthquake struck off Japan’s northeastern coast Monday, prompting authorities to warn residents to avoid coastal areas where tsunami...

A 7.5 magnitide earthquake struck northern Japan on Monday triggering tsunami warnings in the region, Japan's Meteorological Agency said. The tremor was strong enough to shake…