Oct. 17 (UPI) -- The southern United States can expect a warmer and drier winter, while northern U.S. regions probably will see wetter conditions, NOAA scientists said on Thursday in releasing their annual U.S. Winter Outlook. And because of La Nina conditions expected to prevail this winter, National Oceanic and Atmospheric Administration scientists say, some areas such as the Ohio River Valley and Great Lakes could get drought relief. Advertisement NOAA's Climate Prediction Center says the