Partly cloudy, hazy conditions Friday over the site of Block 57 construction and the Salt Lake Valley will change Saturday as another storm moves across the Wasatch Front. The storm should leave 1 to 3 inches of snow in the valleys and 4 to 8 inches in the mountains between sunrise and noon. Temperatures will be colder, with highs Sunday only in the upper 20s and near 30 degrees. The weekend is expected to be cold and dry after Saturday's storm, said William J. Alder, meteorologist in charge of the Salt Lake office of the National Weather Service. Early Friday the Utah Avalanche Forecast Center lifted the avalanche warning for the northern Wasatch Mountains. Natural avalanches are not likely, but human-trigged avalanches or slides caused by snowmobiles or back-country skiers are still possible.