TOKYO — A powerful magnitude 6.9 earthquake struck off the coast of northern Japan on Sunday evening, triggering a tsunami advisory and a series of aftershocks, the Japan Meteorological Agency said.TOKYO — A powerful magnitude 6.9 earthquake struck off the coast of northern Japan on Sunday evening, triggering a tsunami advisory and a series of aftershocks, the Japan Meteorological Agency said.
Powerful 6.9 quake hits northern Japan, tsunami advisory issued
