Japan is assessing damage and cautioning people of potential aftershocks after a late-night 7.5 magnitude earthquake caused injuries, light damage and a tsunami in Pacific coastal communities. At least 30 people were injured after the 7.5 magnitude quake struck around 11:15 p.m. Monday off the coast of Aomori, the northernmost prefecture of Japan’s main Honshu island. A tsunami more than 2 feet above tide levels was measured in Kuji port in Iwate prefecture before all tsunami advisories were lifted. Power was knocked out for hundreds of homes but was mostly restored Tuesday morning. Authorities warned of possible aftershocks.