Another atmospheric river is preparing to take aim at the Bay Area and Central California, bringing “impactful rain,” flash flooding and potentially even snow.

Heavy precipitation is falling mostly in mountain areas. A flood watch in also in effect for the coast of central California, including the San Francisco Bay Area and Sacramento Valley.

Parts of northern California could see up to a foot of rain, but Phoenix will remain dry and warmer than usual.

A much wetter stretch is ahead from California to Washington as multiple systems crash into the Pacific Coast. Here’s how much rain and snow is on the way and when.