A powerful atmospheric river-fueled storm lashing the Pacific Northwest left Northern California under a high risk for excessive rainfall and southern Oregon under moderate risk on Thursday night.

Map of Sierra Nevada in California showing how an atmospheric river develops. Most atmospheric rivers are weak and do not cause damage. In fact, they can provide much-needed rain or snow.

An exceptionally powerful atmospheric river fueled the deadly early April flooding disaster in the central and southern United States — a historic flood event and a poignant example of how the ...

When a bomb cyclone meets an atmospheric river, the result is like an out-of-control fire hose A powerful storm hitting the West Coast combines these weather phenomena for a wet week in many areas.

A new study reveals how an atmospheric river led to more devastation after two earthquakes hit Türkiye and Syria, ...

Here's an explanation of how they form, their size and potential impacts. WHAT IS AN ATMOSPHERIC RIVER? The weather system occurs all over the world. It starts when a large amount of water vapor ...