blizzards destroying everything in their path. millions of people throughout the country feeling these storms' wrath. indra petersons tracking the areas hardest hit for us and where the storms are heading next. welcome to "early start." i'm christine romans. >> i'm poppy harlow. it's friday, may 4th, 5:00 a.m. in the east. breaking news in the hunt for flight 370 and a potential turning point as the search moves under water. australian officials who have now taken the lead in this say the subsurface search is under way with the u.s. navy's pinger locator and other acoustic gear, honing in on about a 150-mile stretch of the indian ocean. they are trying, of course, to detect any transmission from the plane's black box. the pinger may only have a day or two of battery life left. meantime, nearly two dozen ships and aircraft again combing the surface, looking for any sign of debris. overnight officials said all of the leads garnered from