TOKYO, Jumada I 1, 1436, Feb 20, 2015, SPA -- A strong earthquake with a preliminary magnitude of 6.1 hit off the northeast coast of Japan on Friday, the Japan Meteorological Agency said. According to Reuters, the agency said that some change in tidal levels was possible but that no damage was expected. Earlier this week, a 6.9 magnitude quake struck off the northeast coast, triggering a tsunami advisory and evacuation warnings in coastal towns. --SPA 11:47 LOCAL TIME 08:47 GMT www.spa.gov.sa/w