Over a month’s worth of rain, hurricane-force wind gusts and feet of mountain snow are coming to parts of the Pacific Northwest and Northern California.

A massive plume of moisture from the Pacific called an atmospheric river will hit the West Coast on Tuesday afternoon and last into Friday.

A low-pressure system headed for Northern California and Oregon is likely to bring extreme rain and strong winds.

As the strong atmospheric river approaches California and the Pacific Northwest, the National Weather Service warns of excessive rainfall beginning Tuesday.

A powerful bomb cyclone is taking aim at the west coast. Heavy rain and strong winds are expected with at least a foot snow possible in parts of the mountains.

A powerful bomb cyclone is ripping the Pacific Northwest with hurricane-strength winds as the season’s first atmospheric river comes ashore in Northern California, promising torrential rains, floods and mudslides across the region.

Bomb cyclone is a term used by weather enthusiasts to describe a process that meteorologists usually call bombogenesis. It's the rapid intensification of a cyclone in a short period of time, and it can happen during powerful storms such as the one no rthern California and the Pacific Northwest are preparing for this week.

The West Coast is preparing for a long-lasting heavy rain event from a bomb cyclone that is taking shape in the northeastern Pacific Ocean.Threat level: The rapidly intensifying storm is forecast to direct a strong atmospheric river at southwestern Oregon and Northern California for days on end,

A powerful bomb cyclone associated with a major atmospheric river is forecast to drench the West Coast, from Washington to California, midweek, potentially leading to flooding.