Earthquake sets off brief tsunami alert and a megaquake advisory in northern Japan

Japan has issued an advisory for northern coastal areas for an increased risk of a possible mega-quake following a 7.7-magnitude quake earlier Monday.

Japan tsunami: Evacuation alert issued with 10ft waves expected

The Japan Meteorological Agency said a tsunami of up to 10 feet could strike after the 7.7 magnitude earthquake.

Japan eases tsunami warning after magnitude 7.7 quake, no immediate reports of casualties, damage

Two hours after the tremor tsunami waves as high as 80 cm had been detected. A tsunami warning was later downgraded to a tsunami advisory.

M7.7 quake jolts northeastern Japan, tsunami of 80 cm seen on Pacific coast

A powerful quake with a magnitude of 7.7 struck northeastern and northern Japan on Monday, prompting the country's weather agency to

Japan marks 14th anniversary of March 11 disasters (vertical video)

People across Japan are remembering the lives lost 14 years ago when an unprecedented disaster struck on March 11, 2011. The massive earthquake and tsunami devastated Japan's Pacific coast, triggering one of the world's worst nuclear accidents.