This grab of a video that surfaced on social media purportedly shows a building collapsing during a strong earthquake in Ishikawa prefecture in Japan..
The Japanese Government issued tsunami alerts after a series of strong quakes occured in the Sea of Japan.
The Japan Meteorological Agency reported quakes off the coast of Ishikawa and nearby prefectures earlier this morning, one of them with a preliminary magnitude of 7.6.
It issued a major tsunami warning for Ishikawa and lower-level tsunami warnings or advisories for the rest of the western coast of the island of Honshu.
Japanese public broadcaster NHK TV warns torrents of water could reach as high as 5 meters (16.5 feet) and urges people to flee to high land or the top of a nearby building as quickly as possible.
NHK says the tsunami waves could keep returning, and warnings were continuing to be aired nearly an hour after the initial alert.
A tsunami of about 3 meters high was expected to hit Niigata and other prefectures on the western coast of Japan. Smaller tsunami waves were already confirmed to have reached the coastline, according to NHK.
The area includes a nuclear plant. Tokyo Electric Power Co., the operator, says it is checking for problems but there are no immediate reports of any irregularities.
Japan is an extremely quake-prone nation. In March 2011, a major quake and tsunami caused meltdowns at a nuclear plant.
