Precipitation chances pick up for the Pacific Northwest/NorthernRockies through the weekend......Chilly Saturday from the Ohio/Tennessee Valleys to the Northeast; lightprecipitation chances from the Great Lakes to the Carolinas......A mild, early Spring-like weekend for much of the central and westernU.S. as temperatures soar as much as 15-25 degrees above average...After a dry Friday, increasing moisture and northwesterly flow over thePacific Northwest/Northern Rockies will bring increasing ...