Hurricane Felix was feeding on the warm waters of the Caribbean Sea as it spun north of Curacao on Sunday morning on an unpredictable path, the U.S. National Hurricane Center said, according to AP. The Category 2 storm was forecast to pass just north of the Dutch Caribbean island of Aruba, where heavy rain was falling on the island of 100,000 people. The island's airport was closed. «We are entering the two most delicate hours now,» Greg Peterson, president of the Aruba Red Cross, said at 10 a.m. EDT (1400 GMT). The tiny island of Bonaire was left relatively unscathed by Felix, and islanders were heading to church under mostly blue skies. There were no reports of injuries and little visible damage, although at least one yacht snapped off its mooring. Felix was upgraded from a tropical storm to a Category 1 hurricane Saturday evening, becoming the second Atlantic hurricane of the season. By early Sunday, it had sustained maximum winds of about 100 mph (160 kph) and threatened to become a major hurricane as the day went on, the hurricane center said. At 11 a.m. EDT (1500 GMT), Felix was centered about 75 kilometers (50 miles) northeast of Aruba and was moving northwest at about 30 kph (18 mph), according to forecasters. After passing Curacao and Aruba, the storm was expected to move into the open waters of the central Caribbean Sea later Sunday.