A 7.7-magnitude earthquake has struck off the northern coast of Japan, prompting warnings that tsunami waves of up to 3m could hit. The warnings were later downgraded, with no damage reported.
Key points
7.7 magnitude earthquake strikes off Japan View post
Tsunami warning issued as residents told to evacuate View post
Ships flee port after tsunami warning View post
Tsunami warning later downgraded View post
Northern Japan warned of risk of ‘mega-quake’ View post
Carry emergency supplies for next week, Japanese told View post
Mapped: Where earthquake hit View post
Explained: Why Japan is prone to earthquakes View post
Live reporting by Kieren Williams and Samuel Osborne