Heavy Snow spreads into Great Basin, Intermountain West and Rockies.Severe Weather and Excessive Rainfall impacts shift into the SouthernPlains on Friday.Mild temperatures persist across central part of the country throughthis weekend.A powerful low pressure system will spread winter, severe and rain hazardsacross western and central parts of the country. Tonight, heavy rain andsnow impacts will come to an end over California, while tropical andsubtropical moisture converge to spread snow ove...