WASHINGTON: Hurricane Lee, a powerful Category 3 storm, was expected to move well north of Puerto Rico and the US Virgin Islands this weekend but could cause dangerous beach conditions on the US East Coast beginning on Sunday, the US National Hurricane Center said on Saturday. Lee, located about 310 miles (505 km) northeast of the northern Leeward Islands, was packing winds of 115 mph (185 kph), the forecaster said. The storm was moving west-northwest at 10 mph (17 kph) but "gradual restrengthening" was possible in the next...