Thanks for joining 1 NEWS NOW’s live updates on the magnitude 6.9 earthquake which hit Japan this morning. We’ll be bringing you updates as they come to hand throughout the afternoon.
An earthquake with preliminary magnitude of 7.3 struck off Japan's coast of Fukushima prefecture at 5.59am local time (9.59am NZ time). The quake has since been downgraded to magnitude 6.9, at a depth of 25km.
Waves increasing in height hit along the coast, with the biggest reaching 1.4m hitting Miyagi prefecture's Sendai Port.
There have been no immediate reports of damage or serious injury.
The cooling system of nuclear reactor 3 at Fukushima has been restored and the reactor temperature is under control, reports national broadcaster NHK.
There are still concerns over the water purification system to one of the reactors. Electricity to the plant was cut off after the quake hit this morning, sparking concerns over the water cooling system for the reactors.
Reactor 3 was shut down and restarted using back-up electricity.
Miyagi Prefecture's Sendai Port has been hit by a 1.4m wave, reports NHK.
Wave height along the coast is expected to reach three metres.
The advisor to the NZ-Japan Society of Auckland says he is just north of where the quake hit, reports NZME.
Masa Sekikawa said phone connections went down after the first quake.
"After the main one the little ones keep coming every few minutes," he told The New Zealand Herald.
Japanese Chief Cabinet Secretary Yoshihide Suga says the wave has reached up to 90cm at Onahama Port.
"The Prime Minister has called upon people to make sure that accurate information is issued to the residents" he said in a press conference.
"We will continue to capture info about any damages so that we can swiftly move on to take counter actions."
Japan's national broadcaster NHK says there have been reports of minor injuries.
There are unconfirmed reports that Tokyo Electric Power Company (Tepco) has reported a water cooling failure in reactor number 3 at the Fukushima nuclear plant, which was hit in the 2011 magnitude 9.1 quake.
A commentator on NHK says the height of the tsunami wave could become higher once it reaches the shore.
They said they waves are so powerful that people could be washed away, and to remain evacuated.
The earthquake shook buildings in Tokyo, 240 kilometres southwest of the epicenter, reports Associated Press.
There were no immediate reports of damage or injury.
US Geological Survey has downsized the initial earthquake to 6.9. Four quakes have hit the area since the first at 5.59am local time, ranging between magnitudes of 4.8 and 5.3.
Commentators on Japan's national broadcaster NHK are repeatedly telling viewers "please evacuate immediately".
The crisis management task force and fire service are working to get people to evacuate along the coastlines.
The 60cm tsunami has reached Onahama Port in Fukishima, reports NHK.
A tsunami has been observed 20km from the shore of Iwaki City in Fukushima prefecture, reports NHK.
Asia-based journalist Joel Legendre says in a Tweet there has been no change in Fukushima nuclear plant, according to Tepco.
A fire has been reported at a chemical factory in Iwaki City.
Civil Defence has confirmed there is no tsunami threat to New Zealand.
Japan's national broadcaster NHK has told all residents to evacuate, even those living inland.
The Japan Meteorological Agency has told residents to evacuate coastal areas or riversides immediately.
There are areas where tsunami has been observed already, according to Japan's national broadcaster NHK.
NZ Civil Defence says it is assessing the tsunami threat to New Zealand.
Japan Meteorological Agency reports a tsunami up to three metres is imminent.
An earthquake with preliminary magnitude of 7.3 has struck off the coast of Fukushima prefecture in Japan. A tsunami warning for waves of up to three metres has been issued.
The Japan Meteorological Agency says the quake struck around 6am local time at a depth of 10km, and 71km from Iwaki.
Fukushima prefecture is north of Tokyo and home to the nuclear power plant that was destroyed by a huge tsunami following an offshore earthquake in 2011.