Atmospheric rivers happen all over the planet, but a Pineapple Express refers to a specific recurring atmospheric river that hits the U.S. West Coast.

Atmospheric rivers are a plume of moisture that extend across the Pacific to near Hawaii. When they hit land they can cause heavy rains and snow. Here’s a look at the phenomenon: Atmospheric ...

Where did the term atmospheric river come from? The name came from research published in the 1990s by scientists Yong Zhu and Reginald E. Newell of the Massachusetts Institute of Technology.

What’s an atmospheric river? A pineapple express? AP explains the weather phenomenon by: The Associated Press Posted: Feb 13, 2025 / 03:52 PM EST Updated: Feb 13, 2025 / 03:57 PM EST ...

FILE - Residents evacuate past damaged vehicles after storms caused a mudslide, Monday, Feb. 5, 2024, in the Beverly Crest area of Los Angeles. (AP Photo/Marcio Jose Sanchez, File) 30,197 people ...

What's an atmospheric river? A pineapple express? AP explains the weather phenomenon Atmospheric rivers are long and relatively narrow bands of water vapor that form over an ocean and flow through ...

Formed by winds associated with cyclones, atmospheric rivers typically range from 250 miles to 375 miles (400 to 600 kilometers) in width and move under the influence of other weather.

What’s an atmospheric river? A pineapple express? AP explains the weather phenomenon by: The Associated Press Posted: Feb 13, 2025 / 03:52 PM EST Updated: Feb 13, 2025 / 03:57 PM EST ...