TOKYO -- Japan on Friday issued a tsunami advisory after a 6.7 magnitude earthquake shook the country’s northeast, according to the Japan Meteorological Agency. The quake occurred off the east coast of Aomori prefecture, in the north of Honshu, the main Japanese island, at a depth of 20 kilometers (12.4 miles) at 11:44 a.m. local time, JMA said.

"People sometimes think the little earthquakes are a safety valve."

A 6.7 magnitude earthquake occurred Friday afternoon local time off the northern coast of Japan, the Japan Meteorological Agency said. The earthquake comes after a 7.5 magnitude earthquake struck the same region earlier this week.

Japan has warned of the possibility of a mega-quake.

The quake with an epicenter near San Ramon struck just before 6 a.m. Tuesday.

A powerful late night earthquake shook more than a million people across cities in northeast Japan. The quake was located just off the coast of Misawa in Aomori Prefecture. Japan’s Meteorological Agency issued tsunami warnings,

A powerful 7.5-magnitude earthquake has struck off northern Japan, injuring over 20 people and triggering a tsunami

Japan’s government says that the chances of a magnitude 8 earthquake have increased. Scientists can’t predict when one will strike, but it represents a meaningful jump over typical odds.

A tsunami alert was triggered after a powerful earthquake struck off the coast of northern Japan on Monday, the country's meteorological agency said.

TOKYO >> Japanese authorities lifted tsunami warnings on Tuesday hours after a powerful 7.5-magnitude earthquake shook northeastern regions, injuring at least 30 people and forcing about 90,000 residents to evacuate their homes.

For millions of Californians, the ground did not simply shake once and fall silent. It pulsed again and again over roughly eight hours, a rolling sequence of small and moderate earthquakes that stretched from the Bay Area to the mountains of Southern California and turned a familiar hazard into an unnerving drumbeat.