A powerful earthquake has triggered a tsunami warning off Japan's west coast

A series of powerful earthquakes off central Japan's west coast triggered tsunami warnings on Monday as residents were urged to seek higher ground. The Japan Meteorological Agency (JMA) said the Noto region, west of Japan's main island of Honshu, was hit by a rapid series of tremors, starting with a magnitude 5.7 earthquake at 4:06 p.m. local time.

It was followed four minutes later by a magnitude 7.6 earthquake, followed by magnitude 6.1 at 4:18 pm, magnitude 4.5 at 4:23 pm, magnitude 4.6 at 4:29 pm, and magnitude 4.8 at 4:29 pm. Earthquake at 4:32 p.m.

The first tsunami waves, about four feet high, hit the port of Wajima in Ishikawa Prefecture about an hour after the quake, and there were warnings that a tsunami could reach another 16 feet in Ishikawa. Presenters on national broadcaster NHK urged people in the region to drop everything and quickly move to higher ground.

“The dangerous tsunami waves from this earthquake are 300 km [about 186 miles] earthquake off the coast of Japan,” the Hawaii-based Pacific Tsunami Warning Center said, while the Japan Meteorological Agency warned of waves up to five meters high.

Power companies that operate nuclear plants in the region said they were checking for any irregularities, but said there were no immediate problems, and the government later appeared to ensure the safety of the plants.

“It has been confirmed that there are no abnormalities at Shiga Nuclear Power Plant [in Ishikawa] and other stations are currently available,” national government spokesman Hayashi Yoshimasa said, according to AFP news agency.

The earthquakes caused damage, however, as video broadcast by NHK showed buildings collapsing in Ishikawa. On the other side of Japan, the network said buildings were all shaken in the capital Tokyo, and Yoshimasa said authorities were still checking the extent of damage in affected areas to the west.

More than 36,000 homes in Ishikawa and Toyama prefectures were without power, Reuters news agency reported, citing utility provider Hokuriku Electric Power.

A big one On March 11, 2011, an earthquake and tsunami struck northeastern JapanIt devastated much of the country's coastline and fueled a nuclear meltdown at Fukushima.