A magnitude-5.3 earthquake shook Hawaii's Big Island early Thursday, but no damage was reported. The U.S. Geological Survey said the quake was centered about 11 miles (18 kilometers) southeast of Volcano town on the state's southernmost island at a depth of 5 miles (8 kilometers.) That's on the south flank of Kilauea volcano, which has been erupting continuously since 1983. The scientist in charge of the Hawaiian Volcano Observatory, Christina Neal, said the earthquake didn't appear to affect Kilauea's eruptions, AP reported. The Pacific Tsunami Warning Center says no tsunami was expected as a result of the earthquake.