An earthquake with a magnitude of 8.9 struck 250 miles (400km) from Tokyo on 11 March.  Following the earthquake there continues to be a risk of aftershocks and tsunamis throughout Japan. Tsunami warnings have been put in place around the Pacific Ocean

Further information is available from the Japanese Meteorological Agency, the British Geological Survey and the Pacific Tsunami Warning Centre. If you are concerned about a friend or relative that may have been affected by the earthquake, please refer to the Foreign and Commonwealth Office website.