Atmospheric River, Pacific Northwest

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.
Heavy rain and snow will hit Northern California throughout most of this week as an atmospheric river moves through.
Heavy precipitation is falling mostly in mountain areas. A flood watch in also in effect for the coast of central California, ...
A significant, prolonged pattern change will bring multiple days of rain, and possibly lower-elevation snow to the Northwest, including the first snow of the season for Seattle and Portland.
A powerful winter storm is blasting the Northwest with heavy snow and fierce winds, as residents are warned to stay off the roads.