A strong spring storm brought widespread flooding and some tornadoes to multiple states Wednesday and early Thursday.

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 ...

After unleashing dozens of destructive tornadoes, a slow-moving storm system dumped heavy rain across the U.S. Midwest and ...

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

"That moisture plume, known as an atmospheric river, will be tropical in nature and originate from the Caribbean," AccuWeather Senior Storm Warning Meteorologist William Clark said in the report.

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.

That being said, meteorologists are eyeing a potential atmospheric river that could sweep through the region at the end of the month. “It’s pretty far out and we need to do some polishing on ...

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.