Following the bomb cyclone, the region faces days of rain, flooding and snow at higher elevations, the National Weather Service said Wednesday. That's part of an atmospheric river that could bring over a foot of rain to some areas.

More than 500,000 energy customers across the West Coast were without power early Wednesday and one person was killed by a falling tree as severe weather caused by back-to-back powerful storm systems began battering the Pacific Northwest.

SEATTLE (AP) — A major storm swept across the northwest U.S., battering the region with strong winds and rain, causing widespread power outages and downing trees that killed at least one person.