Unseasonably warm conditions exist in the west. Later this week, a cold front will move into the PNW and Sierra, bringing some snowfall back. Interior BC might be chaseable as well. Cold air tracks from the Sierra to the northern Rockies over the weekend while it stays warmer in the central and southern regions. Snow will return to the west with the colder air. The extended forecast might be deep!
A couple of nice days of spring in the West will turn to a stormy pattern with several rounds of snow through next week. Cold northwest flow will bring good powder conditions through many Western U.S. states. In the East, active storms will take a northerly track and bring rain, confining cold air and snow to the northern tiers.
Cool northwest flow will keep scattered and light snow showers falling in the northern Mid-Atlantic on Wednesday and Thursday. Snow accumulations will be minimal to light with a trace-2 inches. A few rain showers will affect the western Mid-Atlantic. Friday will be clear with a weekend storm system bringing warm air and rain. Saturday looks to be manageable on the slopes with more rain on Sunday.