TOKYO (AP) — A volcano erupted on a small island in southern Japan on Friday, and authorities ordered residents to evacuate the island. Mount Shindake erupted about 10 a.m. (0100 GMT) in spectacular fashion, spewing towering black-gray clouds into the sky. No injuries had been reported, although the Japan Meteorological Agency reported that pyroclastic flows from the volcano had reached the shore to the northwest. The government was surveying the island by helicopter to assess damage. The national broadcaster NHK cited local officials as saying that 80 residents had taken refuge in a shelter on the island. About 140 people live on Kuchinoerabu island in the Ryukyu archipelago, 50 miles (80 kilometers) southwest of the main southern island of Kyushu.