The Japan Meteorological Agency (JMA) has issued tsunami warnings for the coastal prefectures of Ishikawa, Niigata and Toyama, marking the first major warnings since the March 2011 earthquake and tsunami that struck northeastern Japan.
House collapses, roads damaged after Japan quake
STORY: The quake triggered warnings for residents to evacuate some areas on its west coast, knocking out power to thousands of homes and disrupting flights and rail services to the affected region.