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No tsunami warning after magnitude 6.9 quake strikes Japan's northeast

On October 6, 2023, a magnitude 6.9 earthquake struck off the coast of Iwate prefecture in northeastern Japan, reaching a depth of approximately 50 km. Authorities confirmed that no tsunami warning was issued, and only minor sea level changes were anticipated. This event is significant as it underscores Japan's seismic activity and the effectiveness of its early warning systems, which are crucial for disaster preparedness and response in a region prone to earthquakes.