RELATED: Atmospheric river could drench Sacramento with month's worth of rain in 1 day as Sierra Nevada faces blizzard The region has been hit with multiple rounds of heavy rain and Sierra snow ...

While one atmospheric river is still pumping rain toward California, another storm is waiting in the wings. The northern half of the state hasn’t even seen the worst of the rain in the first ...

The average atmospheric river carries an amount of water vapor roughly equivalent to the average flow of water at the mouth of the Mississippi River. Exceptionally strong atmospheric rivers can ...

A well-known type of atmospheric river is called a "Pineapple Express" because it flows from the Hawaiian Islands. Strong ARs transport water vapor roughly equivalent to 7.5 to 15 times the ...

A powerful atmospheric river could bring "life-threatening floods" to California, with a total storm rainfall of 12 to 16 inches in some areas. Earlier this week, a bomb cyclone churning over the ...

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

The water is moved over the ocean in the form of water vapor, not a "river" in the way we think of them on land. They tend to move through the atmosphere in streams between 250 and 375 miles wide.

An atmospheric river is hitting Northern California, bringing a series of rainy days with storm impacts through the weekend. The atmospheric river will bring heavy rain, flood risks and strong ...

While one atmospheric river is still pumping rain toward California, another storm is waiting in the wings. The northern half of the state hasn’t even seen the worst of the rain in the first ...

A “bomb cyclone” is bringing damaging winds to parts of the U.S. Northwest and northern California today, and the storm is helping to set up powerful atmospheric river that one weather experts ...