A bomb cyclone slammed the Pacific Northwest earlier this week, causing widespread power outages. Here's what it looked like ...

A powerful storm hitting the West Coast combines these phenomena for a wet week of erratic weather, as a meteorologist ...

A formidable bomb cyclone is churning off the Western U.S.

In recent years, "atmospheric river" has become used much more frequently in scientific papers and in media coverage.

An animated view of the storm reveals its classic cyclonic motion, spinning counterclockwise as a jet of moisture streams ...

The first atmospheric river storm of the winter rainy season slammed into California on Wednesday. Driven by a powerful “bomb ...

On Thursday, rain poured across the northern edge of the state, slowly moving south. Santa Rosa Airport saw 4.93 inches of ...

The definition: An atmospheric river (AR) is a long plume of moisture that stretches from the tropics or subtropics into ...

A satellite image from the NOAA, captured a bomb cyclone over California's shores, showing the dramatic swirling clouds that ...

Life-threatening flooding is expected as a new storm brings more rain and strong winds to the Northwest ahead of a third system approaching this weekend.

Just one atmospheric river can move an average of 10.5 trillion gallons of ... particularly in the western U.S." A view of the Earth using a water vapor satellite shows that moisture in the atmosphere ...