Jiji Press reports that a radioactive leak at the Fukushima Daiichi plant is a possibility if water levels keep falling.
Kyodo News agency reports a train is unaccounted for in the tsunami-hit coastal area of Miyagi. As soon as we have more on that, we'll let you know.
IAEA says it has received information from Japan of heightened state of alert at Fukushima Daiichi nuclear plant.
IAEA says Japanese authority reports that the fire at Onagawa nuclear plant has been extinguished.
Kyodo reports that 2,000 residents near Fukushima nuclear plant have been advised to evacuate.
@GothicFrog tweets: "Scientist from the British Geological survey says the acid test to the strength of the tsunami will be when it reaches Hawaii in 1hour."
Kyodo reporting that over 700 flights from Japan have been cancelled, with 13,000 people stranded at Tokyo's Narita airport and 10,000 at Haneda airport.
In this YouTube video, Dr David Kerridge from British Geological Survey, explains how the earthquake in Japan was recorded. The seismic waves took about 10-12 minutes to arrive from their source off the coast of Japan. (Reuters has not verified this video).
The UK emergency committee has met to discuss its response to the situation in Japan. Foreign Secretary says Britain is ready to provide assistance, with rapid response units ready to go.
Simon G - That's what the Japanese government are saying, yes. Just a precaution.
dovy - 3:07 local time, according to sources.
LittleAsh88 - Not yet. We'll keep you posted.
Jeni - Chief Cabinet Secretary Edano has said there is no radiation leakage and, again, that the evacuation near the plant is precautionary due to a reactor cooling malfunction.
BBC reporting that waves hitting the north-east of Indonesia are under half a metre, so not likely to cause substantial damage.
