MEMPHIS, Tenn. (AP) — Forecasters say the Mississippi River could crest late Monday at Memphis — hours sooner than previously predicted — but the mayor says the city's ready for it. Mayor AC Wharton said that despite the tightened timeframe, he's confident that precautions such as door-to-door warnings have prepared the city. "We don't have as much time, but fortunately we're ready for it," Wharton told The Early Show on CBS Monday.