Thousands of people were without power in Connecticut on Tuesday as winds reaching 50 mph or more knocked down power lines across the region. Fallen wires forced police to close more than a dozen roads, including streets in Windsor, Wethersfield, Farmington and Burlington. More than 17,000 customers were without power Tuesday morning. Blackouts were affecting 30,000 customers across Massachusetts including in Boston, where high winds toppled scaffolding at the site of a seven-story building under construction late Monday night. Authorities said no one was injured by the scaffolding collapse. “Because it was night and it was cold, people were not anywhere near it, so when it fell there was nobody involved with it,” Fire Department District Chief Pat Nichols said. “It’s very fortunate that nobody was hurt.” More than 26,000 customers were without power Tuesday morning in New York. Ulster County in the Hudson Valley was hardest hit, with more than 11,000 households and businesses affected