Japan has issued a tsunami warning after a series of strong earthquakes.
The quakes hit Ishikawa and nearby areas, with one having a preliminary magnitude of 7.6, according to the Japan Meteorological Agency.
There are reports of people trapped under the rubble of collapsed buildings and tens of thousands of homes are without power - with people being urged to flee to high ground due to the tsunami threat.
Japan earthquake latest: Major tsunami warning as residents urged to evacuate
Image: The red line indicates a tsunami warning while the yellow one is a tsunami advisory. Pic: Japan Meteorological Agency
Image: The epicentre of the Japan earthquake. Pic: USGS
The tsunami warning has been issued for Ishikawa and nearby prefectures, along with lower-level warnings or advisories for the rest of the western coast of the island of Honshu.
A tsunami over 1.2m high struck Noto in Ishikawa, a spokesperson for the meteorological agency said.
They added there was a risk of fires, houses collapsing and landslides in areas hit by strong quakes and urged members of the public not to return to dangerous areas for at least a week.
At least 30 buildings in Ishikawa have collapsed so far, a local fire department in Wajima City said.
Please use Chrome browser for a more accessible video player 0:14 Waves build in Japan river amid tsunami warnings
Waves up to 3m high were predicted, according to Japanese broadcaster NHK, which urged people to flee to high ground or the tops of nearby buildings as quickly as possible.
It warned tsunami waves could keep returning and warned more strong quakes could occur in the area over the coming days. Several aftershocks rocked the region.
Image: A collapsed building in Wajima City, Toyama Prefecture. Pic: AP
Image: Collapsed buildings in Wajima City. Pic: AP
Image: People are evacuated following from their homes in Wajima City. Pic: AP
Japan's Prime Minister Fumio Kishida urged residents facing the tsunami threat to evacuate immediately following the earthquake.
"Residents need to stay on alert for further possible quakes and I urge people in areas where tsunamis are expected to evacuate as soon as possible," he said.
Government spokesman Yoshimasa Hayashi said it was critical for people in coastal areas to get away from the oncoming tsunami.
"Every minute counts. Please evacuate to a safe area immediately," he said.
Image: The earthquake damaged the pavement in Wajima City. Pic: AP
Image: A property on fire in Wajima City which is believed to be related to the earthquake
No irregularities reported at nuclear plants
Nuclear power plants in the area had not reported any irregularities, Japan's Nuclear Regulation Authority said.
More than 36,000 households lost power in Ishikawa and Toyama prefectures, utilities provider Hokuriku Electric Power said.
Please use Chrome browser for a more accessible video player 0:45 Family cling to belongings in Japan quake
High speed rail services to Ishikawa have been suspended while Japanese airline ANA turned back planes headed to airports in Toyama and Ishikawa and Japan Airlines cancelled most of its services to Niigata and Ishikawa regions.
Japan takes no chances when it comes to the risk of tsunamis Tom Clarke Science and technology editor @t0mclark3 You only have to look back to the Tohoku earthquake in 2011 to understand why Japan takes no chances when it comes to the risk of tsunamis. That quake on the east coast of Japan caused waves up to 40m high that claimed the lives of nearly 20,000 people and displaced 200,000 more. This quake and the tsunami it has produced is nothing of that scale. At 7.6 on the magnitude scale it released 250 times less energy than the 2011 quake. But that doesn’t mean an immediate call for evacuation of coastal areas by Japanese authorities is misplaced. This is still a major earthquake. It was shallow too – just 10km deep – meaning most of its energy made it to the Earth’s surface. It was also right on the coast – making the risk of tsunami that much higher. For those reasons, this is the first time Japanese authorities have issued a "major tsunami warning" – a risk of 3m waves or more – since the 2011 quake. The major tsunami warning was later downgraded to a tsunami warning. Major quakes on Japan’s west coast are rarer, but not unheard of. The Okushiri earthquake in 1993 was similar in size and depth to this one and caused a major tsunami that killed 230 people. The location of these quakes also makes the tsunami risk less predictable. The Sea of Japan is an enclosed ocean compared to the vast Pacific to the west of Japan. Tsunami waves can bounce around, reflected off surrounding coasts and islands, sometimes leading to larger waves than that caused by the initial quake. However, the fact this earthquake was significantly less powerful than 2011, or the catastrophic Boxing Day tsunami of 2004, means disruption beyond the east coast of Japan is unlikely.
The tsunami could last for two days, an expert said. The secretary general of the Joint Tsunami Commission, Mohammad Heidarzadeh, told Sky News the natural disaster has the potential to create "long-lasting oscillations" due to its location in the Sea of Japan - an almost entirely enclosed basin.
"This means that for two days you could have large waves and then obviously an impact on countries on the other side like North Korea, South Korea, Russia," he said. "We are just at the beginning of a disaster, I would say."
Image: Damage in a shop in Toyama City, Toyama Prefecture, following the earthquake. Pic: AP
Image: A collapsed torii gate at the Onohiyoshi Shrine in Kanazawa, Ishikawa prefecture
Russia and North Korea issue tsunami warnings
Russia issued a tsunami warning for parts of Sakhalin island's western coast and the mainland cities of Vladivostok and Nakhodka, which are situated close to Japan on Russia's east, while North Korea issued tsunami warnings for its east coast.
Waves 1m high reached South Korea's east coast, with its meteorological agency adding there may be more and larger waves in the coming hours.
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Japan is extremely prone to earthquakes. In March 2011, a major quake and tsunami caused meltdowns at the Fukushima nuclear power plant.