Parts of the Pacific Northwest are recovering after a huge winter storm hit the region over the last couple of days. Tow trucks and emergency crews were busy all day and night helping drivers who slid off the road.

As rain hits the surface, many road temps will be below freezing, and ice will develop through much of Friday morning in the lower elevations.

Sign up for the Morning Brief email newsletter to get weekday updates from The Weather Channel and our meteorologists.A​n atmospheric river will continue to soak parts of California with locally flooding rain early this week,

A weather system fueled by a "Pineapple Express" originating near Hawaii will unleash torrential rain across Northern California and southern Oregon throughout the week. Up to 20 inches of rain could lead to mudslides and mountain snow could total 6 feet.

The West Coast is in the middle of a long-lasting and potent atmospheric river event, which will bring days of heavy rain and mountain snow throughout the week ahead.