El Niño and La Niña are climate phenomena that are generally associated with wetter and drier winter conditions in the ...

An expert at the Scripps Institution of Oceanography explains the weather phenomenon that can wreak havoc across California.

What's an Atmospheric River? A Pineapple Express? AP Explains the Weather Phenomenon Atmospheric rivers are a plume of moisture that extend across the Pacific to near Hawaii. When they hit land ...

When they hit land they can cause heavy rains and snow. Here’s a look at the phenomenon: What is an atmospheric river? Atmospheric rivers are long and relatively narrow bands of water vapor that ...

When they hit land they can cause heavy rains and snow. Here's a look at the phenomenon: What is an atmospheric river? Atmospheric rivers are long and relatively narrow bands of water vapor that ...

Many atmospheric river events are weak. But the powerful ones can transport extraordinary amounts of moisture. Studies have shown that they can carry seven to 15 times the average amount of water ...