NEW YORK (AP) — The Weather Channel had its third straight day of a round-the-clock vigil for the approaching superstorm, and the tone of its meteorologists turned more ominous Sunday with evidence building that their forecasts would come true.

The network is planning to live-stream its television coverage online so people in the eastern United States who lose power can keep up with the news on their mobile devices. The storm is expected to affect some 50 million people.

"We want you to know we are not hyping this storm, OK?" on-air meteorologist Vivian Brown said. "We don't do that at The Weather Channel because we want you to be alert and aware."