The warm temps over the west will slowly cool as the week progresses, with some weak waves of snowfall hitting the PNW and BC. Snow levels from 6500 Thursday fall to near 3500-4,000 to close out the week. A significant storm will overspread the west from Sunday night to mid-next week. Some spots in the Sierra could see 50-plus inches of powder.

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.